JPH11212130A - Method and device for adjusting shake correcting drive control system and camera with shake correcting funtion - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust a drive control system for correcting shake in a state maintaining a feedback loop for a servo circuit and to provide stable performance and driving performance suitable for the correction of hand movement. SOLUTION: The adjusting device is provided with a stable performance adjusting part 581 for successively setting up object position information forming each step signal, inputting the positional information of a correction lens part responding to the set contents, finding out a maximum overpass distance from the obtained response information, and setting up the change ratios of proportional and differential gain correction values in a corrected gain setting part 54 in accordance with the maximum overpass distance and a driving performance adjusting part 582 for successively setting up objective position information forming each sine wave signal, entering the positional information of the correction lens part responding to the set contents, finding out an error of the inputted position from the objective position, finding out a standard deviation corresponding to the obtained response error information and setting up the change ratio of a differential gain correction value in the setting part 54 in accordance with the standard deviation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method, an adjusting device, and a camera with a shake correction function of a shake correction drive control system for adjusting a drive control system for correcting shake of a camera body with respect to a subject.

[0002]

2. Description of the Related Art In recent years, a CCD (Charge Coupled Device) area sensor for detecting a shake amount, a shake correction drive unit such as a motor for driving a correction lens disposed on the optical axis of a photographing lens,
A drive control system for performing drive control on the drive unit, performing a prediction operation using a shake amount obtained from a CCD area sensor to calculate a predicted shake amount, and canceling the drive amount. A camera has been proposed in which a drive signal is supplied from a control system to a drive unit, thereby canceling the shake of the subject image caused by the camera shake by performing optical correction (Japanese Patent Laid-Open No. 8-51566). No.). The drive control system mounted on this camera employs a servo circuit in consideration of responsiveness and accuracy, and when the target position information corresponding to the predicted shake amount is set in the servo circuit, the correction lens is The driving unit to be driven is driven until there is no difference from the set target position. When a servo circuit is employed for drive control for such camera shake correction, it is necessary to set the gain of the circuit to an optimum value, but generally, the response is evaluated only.

Japanese Patent Application Laid-Open No. 4-349433 discloses a method of correcting a setting error of a variable apex angle prism using an optimum value set in a servo control system according to a detection signal from an angular displacement sensor. Is disclosed.

[0004]

However, in the camera shake correction, there is a peculiarity that the camera shake is similar to a sine wave vibration, but the gain is not set in consideration of this point in the conventional camera shake correction. . Therefore,
It is hard to say that the correction can always be suitably adapted to the camera shake, and there is a problem that the correction remains accordingly.

[0005] In addition, driving for camera shake correction needs to be stably controlled. This stability is generally evaluated by measuring a phase margin and a gain margin. However, regarding the phase margin and gain margin,
In addition to the need to perform measurement while varying the signal frequency with the feedback loop of the servo circuit open, relatively complicated arithmetic processing has been required.

The present invention has been made in view of the above circumstances, and enables adjustment to a drive control system that performs shake correction while maintaining a feedback loop of a servo circuit.
An object of the present invention is to provide an adjustment method and an adjustment device of a shake correction drive control system capable of providing stable performance and drive performance suitable for camera shake correction, and a camera with a shake correction function equipped with the adjustment device.

[0007]

According to the first aspect of the present invention, a step signal is supplied to a drive control system for correcting a shake of a camera body with respect to a subject, and a step signal is supplied from a driven portion. A stable performance evaluation means for evaluating the stability performance from the response operation status of the drive performance evaluation means for supplying a predetermined signal to the drive control system, and evaluating the drive performance from the response operation status from the driven part And adjustment information setting means for setting adjustment information corresponding to each of the obtained evaluations in the drive control system.

In this configuration, the stability of the drive control system is adjusted according to the response operation status (response) of the driven unit to a step signal, and the response operation status of the driven unit to a predetermined signal is adjusted. Accordingly, the drive performance of the drive control system is adjusted, so that a high drive performance is stably ensured for the drive of the driven part.

[0009] The evaluation of the drive control system with respect to the step signal may be performed based on the maximum overshoot amount. According to this configuration, the drive control system is adjusted to have high stability performance against camera shake.

[0010] If a sine wave is used as the predetermined signal, the camera shake can be suitably simulated, so that a more realistic correction performance can be obtained.

Further, the evaluation of the drive control system with respect to the predetermined signal may be performed based on an integrated value of an error from a response position with respect to a target position indicated by the sine wave. According to this configuration, the drive control system is adjusted to have high drive performance against camera shake.

The drive performance evaluation means may evaluate the drive performance in a state where the adjustment information is set in the drive control system by the stability performance evaluation means. According to this configuration, the drive control system is adjusted to have high drive performance and stable performance against camera shake.

Further, the camera body may be provided with an instruction member for instructing the operation of the stability performance evaluation means and the drive performance evaluation means. According to this configuration,
The measurement and adjustment of the stability performance and the drive performance are started to be executed, for example, through communication.

According to a seventh aspect of the present invention, there is provided a drive control system housed in a camera body for correcting a shake of the camera body with respect to a subject, wherein the shake correction for a driven portion is performed using set adjustment information. In the adjustment method for the drive control system that performs the drive control of the above, in the drive control system, a step signal is supplied to drive the driven unit, the response operation state is detected to evaluate the stable performance, A predetermined signal is supplied to the control system to drive the driven part, the response operation state is detected, the drive performance is evaluated, and the adjustment information corresponding to the obtained stable performance and drive performance evaluation is obtained. An adjustment method of a shake correction drive control system, wherein the method is set in the drive control system.

The invention according to claim 8 is a drive control system housed in the camera body for correcting the shake of the camera body with respect to the subject, wherein the shake correction for the driven portion is performed using the set adjustment information. In an adjustment device for shake correction drive for a drive control system that performs drive control of the above, a step signal is supplied to the drive control system, and a stable performance is evaluated based on a response operation state from the driven unit. Means, a predetermined signal is supplied to the drive control system, drive performance evaluation means for evaluating drive performance from a response operation state from the driven part, and adjustment information corresponding to each of the obtained evaluations. Adjustment information setting means for setting in the drive control system.

According to the seventh and eighth aspects of the present invention, high driving performance is stably ensured for driving the driven portion.

[0017]

FIG. 1 is a block diagram of an embodiment of the present invention. The camera 1 includes a photographing unit 2, a correction lens unit 3, a shake detection unit 4, a shake correction amount setting unit 5, a drive unit 6, a position detection unit 7, an exposure control unit 8, a switch group monitoring unit 9, a distance measurement module 10, The focus unit 11 is configured. However, in the present embodiment, the shake detection unit 4 (41, 4)
Excluding 2 ), A shake correction amount setting unit 5 (excluding 55 and 56), an exposure control unit 8 (excluding 81), a switch group monitoring unit 9, and a focusing unit 11 (excluding a driving system) are described later in a flowchart and the like. Is configured by an MPU (microprocessor unit) that executes a program in which the above processing is described. Each of the above units may be configured by one or a plurality of MPUs.

The photographing unit 2 includes a photographing lens 2 having an optical axis L.
1. An unillustrated mechanism for feeding the loaded film 22 to an image forming position on the optical axis L, and a shutter 23 disposed in front of the film 22 for photographing a subject image.

The correction lens unit 3 includes a horizontal shake correction lens 31 and a vertical shake correction lens 32 disposed in front of the photographing lens 21, and corrects a subject image shake by a prism method. The horizontal shake correction lens 31 and the vertical shake correction lens 32 each have an optical axis parallel to the optical axis L,
It is supported movably in the horizontal and vertical directions orthogonal to each other on a plane orthogonal to the optical axis L.

FIG. 2 is a perspective view of the vertical shake correction lens 32 and the like housed in the lens barrel. In the present embodiment, the vertical shake correction lens 32 is housed in the lens barrel 24 and is attached to a frame 321 supported rotatably at a fulcrum O. A gear portion 322 is formed on the outer peripheral portion of the frame 321 on the side opposite to the fulcrum O. This gear portion 322
When the motor 632 having the gear 631 meshing with the lens is driven, the vertical shake correction lens 32 moves substantially in the vertical direction.
As understood from FIG. 2, the vertical shake correction lens 32 is
Within the movable range R corresponding to the inner diameter of the lens barrel 24, it can be moved substantially vertically. The same applies to the lateral shake correction lens 31.

The shake detecting section 4 includes a detecting lens 41, a shake sensor 42, a shake sensor control section 43, and a signal processing section 44.
And obtains image data for detecting a subject image shake caused by a relative shake of the camera 1 main body with respect to the subject. The detection lens 41 is
It has an optical axis parallel to the optical axis L of the taking lens 21, and forms an object image on the shake sensor 42 behind. The shake sensor 42 is an area sensor in which a plurality of photoelectric conversion elements such as CCDs are two-dimensionally arranged.
1 receives the object image formed in step 1 and obtains an electric signal corresponding to the amount of received light. The image signal of the subject image is obtained as a planar set of pixel signals, which are electric signals obtained by being received by the respective photoelectric conversion elements. The shake sensor control unit 43 causes the shake sensor 42 to periodically perform a light receiving operation for a predetermined charge accumulation time (integration time), and sends an image signal obtained in each light receiving operation to the signal processing unit 44. It is. The signal processing section 44 performs predetermined signal processing (processing such as signal amplification and offset adjustment) on each pixel signal from the shake sensor 42 and A / D converts the pixel signal into pixel data.

FIG. 3 is a diagram showing an example of a shake detection area covered by the shake detection section 4. As shown in FIG. In the present embodiment, the shake detection unit 4 is configured to cover a shake detection area A1 located at the center and a shake detection area A2 located at the left side of the shooting screen. That is, the shake sensor 4
Reference numeral 2 denotes a light receiving surface on which a light receiving element is formed to cover the subject image corresponding to the shake detection area A1 among the subject images formed by the detection lens 41, and corresponds to the shake detection area A2. And another light receiving surface on which a light receiving element only for covering the subject image is formed.

Note that the shake detecting section 4 may use a shake sensor 42 that covers the entire photographed screen. in this case,
At the stage of image processing, signals of an area corresponding to the detection areas A1 and A2 may be extracted.

The shake correction amount setting section 5 shown in FIG. 1 includes a shake amount detection section 51, a coefficient conversion section 52, and a target position setting section 5.
3. Correction gain setting unit 54, temperature sensor 55, memory 5
6, configured by a position data input unit 57 and a drive control adjustment unit 58 for setting data for generating a drive signal for shake correction. Note that the temperature sensor 55
This is for detecting the environmental temperature of the camera 1. The memory 56 includes a RAM for temporarily storing data such as image data and a shake amount used by the shake amount detection unit 51 and a ROM for storing conversion coefficients and the like used by the coefficient conversion unit 52.

FIG. 4 is a block diagram for explaining the configuration of the shake amount detecting section 51. The shake amount detection unit 51 includes a shake amount calculation unit 511, a data selection unit 512, and a predicted shake amount calculation unit 513, calculates a shake amount using image data from the signal processing unit 44, and uses the shake amount. Thus, the predicted shake amount is further obtained.

The shake amount calculating section 511 includes an image data dumping section 511a, a detection area selecting section 511b, and an image comparing / calculating section 511c. The image data dump unit 511a dumps the image data from the signal processing unit 44 to the memory 56 (RAM). Memory 56
Stores image data of each of the shake detection areas A1 and A2.

The detection area selector 511b selects one of the shake detection areas A1 and A2 according to a predetermined selection criterion. As for the selection of the shake detection area, for example, the contrast values of the images in both areas may be compared, and the area having the higher contrast value may be selected.

The image comparison / calculation section 511c calculates the amount of shake using the image data in the shake detection area selected by the detection area selection section 511b and the reference image.
At the start of the shake detection, the reference image has a predetermined reference position at which each lens of the correction lens unit 3 moves, for example, a center position where each lens can move in the opposite direction by the same distance (Ra =
Rb), the shake detection unit 4
This is an image that is included in the image captured from and serves as a reference for detecting the amount of shake. In this way, by using the center position as a reference, it is possible to avoid the problem that the shake correction lens, which tends to occur when one movable range is shorter than the other, easily hits the end. That is, the image comparison / calculation unit 511c extracts an image corresponding to the reference image from the latest image data stored in the memory 56 as a reference image, and changes the reference image position with respect to the position of the reference image initially set. Is performed to calculate the amount of shake in pixel units from. The shake amount is obtained for each of the horizontal and vertical directions, and is temporarily stored in the memory 56.

FIG. 5 is an explanatory diagram of shake amount data selection and extraction by the data selection unit 512. Data selection unit 512
Is to selectively extract four shake amounts including the latest shake amount from the memory 56 using predetermined reference time intervals (speed calculation time Tv and acceleration calculation time Tα). That is,
The shake amount Ea at the latest time point t1 (hereinafter referred to as ta)
Is selected and extracted, and a time point t3 (hereinafter, referred to as tb) that is longer and shorter than Tv (a time interval required for obtaining a shake velocity having required reliability) with respect to the time point ta.
Is searched, and the shake amount Eb at the time point tb is selectively extracted. In addition, Tα (time interval required for obtaining a shake acceleration having required reliability) with respect to time point ta
A time point t5 (hereinafter referred to as tc), which is longer and shorter than that, is searched, and the shake amount Ec at this time point Tc is selectively extracted. Further, a time point t7 (hereinafter referred to as td) which is longer and shorter than the above-described Tv with respect to the time point tc.
Is searched, and the shake amount Ed at this time point td is selectively extracted. These four shake amounts Ea, Eb, Ec, Ed
And the points in time ta, tb, tc, td are selectively extracted in each of the horizontal and vertical directions, and are correspondingly stored in the memory 5.
6 is stored.

However, the time is older in the order of the time points t1, t2,... Each time point represents an intermediate time point of the integration time. Further, upward arrows at each time point indicate detected shake amounts, and these shake amounts are stored in the memory 56.

The data selection unit 512 is not limited to the above selection method, and may be a unit that selects the amount of shake at the time when the separation time is closest to the predetermined reference time interval, or may be shorter than the predetermined reference time interval. Further, the shake amount at the time when the separation time becomes the longest may be selected.

The predicted shake amount calculator 513 shown in FIG.
Is a data selection unit 512 for each of the horizontal and vertical directions.
Is used to calculate the predicted shake amount using the four shake amounts selected and extracted in (1). That is, the latest shake amount Ea and the past shake amount Ea
The shake speed V1 is obtained from the two shake amounts Eb by (Equation 1), and the shake speed V2 is obtained from (Rev. 2) from the remaining two old shake amounts Ec and Ed. Then, the shake acceleration α is obtained from the shake speeds V1 and V2 by (Equation 3).

[0033]

(Equation 1)

[0034]

(Equation 2)

[0035]

(Equation 3)

Next, based on the assumption that the shake due to the hand shake changes substantially in accordance with the constant acceleration motion, the estimated shake amount E _{P is} calculated from the latest shake amount Ea, the shake speed V1 and the shake acceleration α according to (Equation 4). Is calculated.

[0037]

(Equation 4)

However, the constant k (0 <k <1) is a correction coefficient for approaching actual camera shake, and T _P = (1/1)
2) It is × T1 + T2 + T3 + T4 + Td. here,
Time T1 is the integration time of the shake sensor 42, time T2 is the transfer time required for the image information of the shake sensor 42 to be dumped in the memory 56, time T3 is the calculation time of the shake amount calculation,
The time T4 is a prediction calculation time for predictive shake amount calculation. The time Td is the time required from when the shake amount detector 51 sends out the estimated shake amount to when the driving by the correction lens unit 3 is completed. The time T _P measures the current time tr, may be obtained by the operation of the tr-ta + td. Further, the delay time Td may not be taken into account in the time T _P.

The coefficient conversion unit 52 shown in FIG. 1 calculates the horizontal and vertical predicted shake amounts using the conversion coefficients stored in the memory 56 and the horizontal and vertical target angular positions with respect to the correction lens unit 3. (Drive amount). Further, the coefficient conversion unit 52 calculates a correction coefficient according to the environmental temperature detected by the temperature sensor 55, and corrects the horizontal and vertical target angle positions using the correction coefficient. This correction factor is
This is for correcting a change in the focal length of the detection lens 41 and a change in the refractive index (power) of light caused by the correction lens unit 3 due to a change in environmental temperature.

The target position setting section 53 converts the target angle position in the horizontal and vertical directions after temperature correction into target position information (drive end position). These horizontal and vertical target position information are set in the drive unit 6 as setting data SD _PH and SD _PV , respectively.

The target position setting unit 53 sets the horizontal and vertical target position information from the drive control adjustment unit 58 as setting data SD _PH and SD _PV in the driving unit 6.

The correction gain setting section 54 includes a temperature sensor 55
After obtaining the horizontal and vertical gain correction amounts according to the environmental temperature from and adjusting with the increase / decrease rate from the drive control adjustment unit 58,
_These are output to the drive unit 6 as setting data SD _GH and SD _GV . The gain correction amount in the horizontal and vertical directions is
It corrects the horizontal and vertical basic gains, respectively. Details of the setting data SD _GH , SD _GV , basic gain, and increase / decrease rate will be described later.

The position data input section 57 A / D converts each output signal of the position detection section 7 and monitors each position of the horizontal shake correction lens 31 and the vertical shake correction lens 32 based on the obtained output data. Things. By monitoring this position data, it is possible to detect an abnormal state of the drive mechanism for the correction lens unit 3 and the like. The drive control adjustment unit 58 will be described after the position detection unit 7.

The drive section 6 comprises a drive control circuit 61, a horizontal actuator 62 and a vertical actuator 63. The drive control circuit 61 includes setting data SD _PH and S _PH from the target position setting unit 53 and the correction gain setting unit 54.
It generates horizontal and vertical drive signals in accordance with D _PV , SD _GH , and SD _GV . The horizontal actuator 62 and the vertical actuator 63 are composed of a coreless motor or the like (see the motor 632 and the gear 631 in FIG. 2), and perform horizontal vibration correction according to the horizontal and vertical drive signals generated by the drive control circuit 61, respectively. The lens 31 and the vertical shake correction lens 32 are driven.

FIG. 6 is a block diagram showing an example of the drive control circuit 61 constituting a part of the servo circuit. First, the setting data SD _GH , SD set in the drive control circuit 61
_GV will be described. When the environmental temperature of the camera 1 changes, various characteristics of the drive system for shake correction change. For example, the torque constant of each motor (see the motor 632 in FIG. 2) in the drive unit 6, the backlash of the drive system (movable mechanism) in the correction lens unit 3 and the drive unit 6, and the drive system The hardness of the gear (see the gear portion 322 and the gear 631 in FIG. 2) changes.

FIG. 7 is a temperature characteristic diagram of the motor torque which is a factor of the change of the driving characteristics. As understood from FIG. 7, when the environmental temperature deviates from the reference temperature (for example, 25 ° C.), the motor torque shows a value different from the value at the reference temperature. As a result, the drive characteristics related to the shake correction change. As described above, the driving characteristics based on the basic gain in the horizontal and vertical directions (the driving gain at the reference temperature) are as follows.
When the environmental temperature obtained by the temperature sensor 55 deviates from the reference temperature, the temperature fluctuates.

Therefore, the correction gain setting section 54 generates a gain correction amount for correcting a change in drive characteristics due to each of the basic gains in the horizontal and vertical directions according to the environmental temperature obtained by the temperature sensor 55. In the present embodiment, a function (environment temperature is used as an argument) for obtaining a gain correction amount for individually correcting each variation such as motor torque, backlash, and gear hardness that occurs when the environment temperature deviates from the reference temperature. )But,
It is determined in advance for each of the horizontal and vertical directions. Then, for each of the horizontal and vertical directions, the environmental temperature detected by the temperature sensor 55 is input to each correction function, and the total value of the obtained values is obtained as a gain correction amount. These gain correction amounts in the horizontal and vertical directions are respectively set in the setting data SD.
_GH and SD _GV are set in the drive control circuit 61.

Next, the drive control circuit 61 will be described. In FIG. 1, the setting data SD _GH , SD
_{The GV} is illustrated as being transmitted on two signal lines, but actually, two data lines (SCK, SD) not shown
And serially transmitted and set by three control lines (CS, DA / GAIN, X / Y). Similarly, the setting data D _PH and SD _PV are sent to the drive control circuit 61 alternately.

For this purpose, the drive control circuit 61 includes a buffer, a sample and hold circuit, and the like. That is, FIG.
, The buffers 601 and 602 store setting data S that are set alternately from the target position setting unit 53, respectively.
This is a memory for storing D _PH and SD _PV .

The DAC 603 is a D / A converter, and converts the setting data SD _PH set in the buffer 601 into a target position voltage V _PH . Further, the DAC 603 converts the setting data SD _PV set in the buffer 602 into a target position voltage V _PV .

S / Hs 604 and 605 are sample and hold circuits. The S / H 604 samples the target position voltage V _PH converted by the DAC 603, and holds the value until the next sampling. Similarly, S / H605
Samples the target position voltage V _PV converted by the DAC 603 and holds the value until the next sampling.

The adder circuit 606 calculates the difference voltage between the target position voltage V _PH and the output voltage V _H from the lateral position detector 71. The addition circuit 607 calculates a difference voltage between the target position voltage V _PV and the output voltage V _V from the vertical position detection unit 72. That is, in the addition circuit 606 and 607, the output voltage V _H in a negative voltage at the lateral position detection unit 71 and the vertical position detector 72, respectively, since to obtain a V _V, the differential voltage is obtained by adding.

V / V 608 amplifies the input voltage to a voltage as a lateral proportional gain at a preset ratio with respect to the reference temperature, and V / V 609 converts the input voltage to the reference temperature. To a voltage set as a proportional gain in the vertical direction at a preset ratio. Here, the proportional gain in the lateral direction refers to the lateral shake correction lens 31.
Is a gain proportional to the difference between the target position of the horizontal shake correction lens 31 and the position of the lateral shake correction lens 31 detected by the horizontal position detection unit 71. The vertical proportional gain is a gain proportional to the difference between the target position of the vertical shake correction lens 32 and the position of the vertical shake correction lens 32 detected by the vertical position detection unit 72.

The differentiating circuit 610 performs a differentiation by a preset time constant with respect to the reference temperature on the difference voltage obtained by the adding circuit 606 to obtain a voltage as a differential gain in the horizontal direction. The obtained voltage corresponds to a speed difference in the lateral direction (difference between the target drive speed and the current drive speed). Similarly, the differentiating circuit 611 obtains a voltage as a differential gain in the vertical direction by performing differentiation by a preset time constant with respect to the reference temperature on the difference voltage obtained by the adding circuit 607. The obtained voltage corresponds to a vertical speed difference (difference between the target driving speed and the current driving speed).

As described above, the proportional and differential gains as basic gains with respect to the reference temperature are set in the horizontal and vertical directions by the V / Vs 608 and 609 and the differentiation circuits 610 and 611.

The buffer 612 includes the correction gain setting section 54
It is a memory for storing the setting data _SDGH from. The setting data _SDGH is a gain correction amount (proportional and differential gain correction amount) for correcting the horizontal basic gain (proportional and differential gain). The buffer 613 is a memory that stores the setting data SD _GV from the correction gain setting unit 54. The setting data SD _GV is a gain correction amount (proportional and differential gain correction amount) for correcting the vertical basic gain (proportional and differential gain).

The HP gain correction circuit 614 has a V / V60
8 with respect to the horizontal proportional gain obtained in
An analog voltage corresponding to the horizontal proportional gain correction amount from 12 is added to output a horizontal proportional gain after temperature correction. The VP gain correction circuit 6
Numeral 15 adds an analog voltage corresponding to the vertical proportional gain correction amount from the buffer 613 to the vertical proportional gain obtained by the V / V 609, and outputs a vertical proportional gain after temperature correction. Is what you do.

The HD gain correction circuit 616 is
An analog voltage corresponding to the horizontal differential gain correction amount from the buffer 612 is added to the horizontal differential gain obtained in step 10 to output the horizontal differential gain after temperature correction. Further, the VD gain correction circuit 617 adds an analog voltage corresponding to the vertical differential gain correction amount from the buffer 613 to the vertical differential gain obtained by the differentiating circuit 611, and outputs the vertical differential gain after temperature correction. It outputs the differential gain in the direction.

As described above, the HP gain correction circuit 614,
VP gain correction circuit 615, HD gain correction circuit 616
And the VD gain correction circuit 617 performs temperature correction on the proportional and differential gains as the basic gain.

The LPF 618 includes an HP gain correction circuit 61
4 and a low-pass filter for removing high-frequency noise included in each output voltage of the HD gain correction circuit 616. L
The PF 619 is a low-pass filter that removes high-frequency noise included in each output voltage of the VP gain correction circuit 615 and the VD gain correction circuit 617.

The driver 620 includes LPFs 618 and 61
9 is a motor driving IC that supplies drive power corresponding to the output voltage of No. 9 to the horizontal actuator 62 and the vertical actuator 63, respectively.

Returning to FIG. 1, the position detecting section 7 includes a horizontal position detecting section 71 and a vertical position detecting section 72.
The horizontal position detector 71 and the vertical position detector 72 detect the current positions of the horizontal shake correction lens 31 and the vertical shake correction lens 32, respectively.

FIG. 8 is a block diagram of the horizontal position detecting section 71. The horizontal position detection unit 71 includes a light emitting diode (LED) 7.
11, slit 712 and position detection element (PSD) 71
Three. The LED 711 is provided for the horizontal shake correction lens 3.
It is attached to the position where the gear portion is formed on one frame 311 (see LED 721 in FIG. 2). Slit 712
Is for sharpening the directivity of light emitted from the light emitting unit of the LED 711. The PSD 713 is a lens barrel 24.
At the position facing the LED 711 on the inner wall side. The PSD 713 has a photoelectric conversion current I of a value corresponding to the light receiving position (centroid position) of the light beam emitted from the LED 711.
1, I2. Photoelectric conversion current I1, I
By measuring the difference between the two, the position of the lateral shake correction lens 31 is detected. Vertical position detector 72
Is also configured to detect the position of the vertical shake correction lens 32 in the same manner.

FIG. 9 is a block diagram of the horizontal position detector 71. The horizontal position detection unit 71 includes the LED 711 and the PSD 7
13 as well as I / V conversion circuits 714 and 715, an addition circuit 716, a current control circuit 717, a subtraction circuit 718 and L
It is composed of PF719 and the like. The I / V conversion circuits 714 and 715 respectively output the output current I
1, I2 are converted into voltages V1, V2. The addition circuit 716 obtains an addition voltage V3 of the output voltages V1 and V2 of the I / V conversion circuits 714 and 715. The current control circuit 717 increases or decreases the base current of the transistor Tr1 so as to keep the output voltage V3 of the adder circuit 716, that is, the light emission amount of the LED 711 constant. The subtraction circuit 718 calculates a difference voltage V4 between the output voltages V1 and V2 of the I / V conversion circuits 714 and 715. LPF
Reference numeral 719 cuts a high-frequency component included in the output voltage V4 of the subtraction circuit 718.

Next, the detection operation by the horizontal position detector 71 will be described. Current I sent from PSD 713
1 and I2 are converted into voltages V1 and V2 by I / V conversion circuits 714 and 715, respectively.

Next, the voltages V1 and V2 are added to the adder circuit 716.
Is added. The current control circuit 717 supplies a current at which the voltage V3 obtained by the addition is always constant to the base of the transistor Tr1. The LED 711 emits light with a light amount corresponding to the base current.

On the other hand, the voltages V1 and V2 are subtracted from the subtraction circuit 718.
Is subtracted. The voltage V4 obtained by this subtraction is a value indicating the position of the lateral shake correction lens 31. For example, when the light receiving position is located at a position which is on the right side of the center of the PSD 713 and separated by the length x, the length x, the currents I1, I2, and the light receiving area length L of the PSD 713 satisfy the relationship of (Equation 5).

[0068]

(Equation 5)

Similarly, the length x, the voltages V1 and V2, and the light receiving area length L satisfy the relationship of (Equation 6).

[0070]

(Equation 6)

From this, the value of V2 + V1, that is, the voltage V3
Is controlled to be always constant, the relationship of (Equation 7) is obtained, and the value of V2−V1, that is, the value of the voltage V4 becomes the length x
The position of the lateral shake correction lens 31 can be detected by monitoring the voltage V4.

[0072]

(Equation 7)

FIG. 10 is a block diagram for explaining the configuration of drive control adjusting section 58. Drive control adjustment unit 58
Is composed of a stable performance adjusting unit 581, a driving performance adjusting unit 582, and a memory 583, and measures the stability and the driving performance of the driving unit 6 and the position detecting unit 7 (servo circuit). 54, the rate of increase / decrease for each gain correction amount is set. The memory 58
3 is a stable performance adjusting unit 581 and a driving performance adjusting unit 582
And a ROM for storing a plurality of target position information forming a step signal and a sine wave signal used in the stable performance adjusting unit 581 and the driving performance adjusting unit 582 and an increase / decrease rate for the gain correction amount. It consists of.

The stable performance adjusting section 581 includes a step signal setting section 581a, a stable performance measuring section 581b, a stable performance evaluating section 581c, and an increase / decrease rate setting section 581d. , The rate of increase or decrease with respect to the gain correction amount (proportional and differential gain correction amount) is set. In the present embodiment, the stable performance adjustment unit 581 supplies a step signal to the servo circuit, measures the stable performance by taking in the lens position information of the correction lens unit 3 responsive thereto, and measures the response after the measurement. The maximum overshoot amount is obtained from the information, the stability performance is evaluated based on the phase margin, and the stability performance is adjusted according to the evaluation result.

FIG. 11 is a diagram showing a step signal formed based on the target position information and the movement of the correction lens unit in response to the step signal. The step signal setting unit 581a stores target position information (TP0, T) from the memory (ROM) 583.
P1, TP2,...) Are sequentially read and the target position setting unit 5
3 is set. These target position information are shown in FIG.
As shown in FIG. 1, a step signal rising at the start point (t = 0) is formed. When the target position information is set in the drive unit 6 as setting data, the correction lens unit 3 cannot completely follow the step signal due to the inertia force of its own weight or the like, and moves like a waveform Rs. .

The stability performance measuring section 581b sequentially takes in the lens position information of the correction lens section 3 after being driven in response to the target position information from the step signal setting section 581a from the position data input section 57, and stores it in the memory (RAM). ) 583. As a result, the measurement of stability performance
When the taking of the lens position information for all the target position information forming the step signal is completed, the process ends, and the response information to the step signal is obtained.

After measuring the stable performance, the stable performance measuring unit 581b obtains the maximum overshoot Km from the response information stored in the memory 583. Note that the maximum overshoot amount (overshoot amount) Km may be obtained based on the target position, but in the present embodiment, c (t) = 0.
Is determined based on the position of.

FIG. 12 is a graph showing the relationship between the maximum overshoot amount and the phase margin. In FIG. 12, the phase margin is
It decreases as the maximum overshoot amount Km increases. In general, it is considered that when the phase margin is about 40 to 60 degrees, a high stability performance as well as a high response speed can be obtained. At this time, the range of the maximum overshoot amount Km is 1.05 to 1.28. Therefore,
In the present embodiment, 1.05 to 1.25 within this range is used as an evaluation standard for stable performance.

That is, the stable performance evaluation section 581c determines whether or not the maximum overshoot amount Km is 1.05 or less and 1.25 or more. That is, if the maximum overshoot amount Km is in the range of 1.05 to 1.28, the stability performance is good, so that it is determined whether or not it is outside this range.

The increase / decrease rate setting section 581d is provided with a memory (RO)
M) From the data table of (Table 1) stored in 583, according to the determination (evaluation) result of the stability performance evaluation unit 581c, the rate of increase / decrease in the proportional and differential gain correction amounts is read out, and the correction gain setting unit 54 To set.

[0081]

[Table 1]

Specifically, the maximum overshoot amount Km is 1.
If the number is equal to or less than 05, the increase / decrease rate of the setting number (setting number ← setting number + 1) incremented by “1” is read out, and 1.25
If this is the case, the increase / decrease rate of the setting number (setting number ← setting number−1) decremented by “1” is read. If the maximum overshoot amount Km is larger than 1.05 and smaller than 1.25, the set number is held as it is.

In the initial state, the proportional and differential gain correction amounts are set such that the rate of increase / decrease is “1”, that is, the set number is “4”. If the weight of the mechanism of the movable part, the performance of the motor, and the like are as designed, the highest performance can be obtained at this rate of change.

Note that each rate of change with respect to the proportional and differential gain correction amounts may be calculated, for example, by an arithmetic expression that increments or decrements the rate of change “1” at a rate of 20% instead of the data table. Good.

Driving performance adjusting section 582 shown in FIG.
Are a sine wave signal setting unit 582a and a driving performance measuring unit 582
b, drive performance evaluation section 582c and increase / decrease rate setting section 582d
In the horizontal and vertical directions, an increase / decrease rate with respect to a gain correction amount (differential gain correction amount) is set in accordance with the driving performance of the servo circuit. In the present embodiment, the drive performance adjustment unit 582 supplies, for example, a sine wave signal formed based on the target position information to the servo circuit, fetches the lens position information of the correction lens unit 3 responsive thereto, and The drive performance is measured by calculating the error with respect to the target position, and the standard deviation σ is calculated for the response error information after the measurement, and the drive performance is evaluated based on this, and the drive is performed according to the evaluation result. It is configured to perform performance tuning.

FIG. 13 is a diagram showing a sine wave signal formed by the target position information and the movement of the correction lens unit 3 in response thereto. FIG. 14 shows the response characteristic of the correction lens unit 3 when the gain of the drive control circuit 61 is large, FIG. 15 shows the response characteristic when the gain is small, and FIG. 16 shows the optimal case.

The sine wave signal setting section 582a has a memory (R
OM) 583, the target position information forming the sine wave signal TP is sequentially read and set in the target position setting unit 53. When the target position information is set in the drive unit 6 as the setting data, the correction lens unit 3 cannot completely follow the sine wave signal and moves like a waveform Rd.

The drive performance measuring section 582b sequentially takes in the lens position information of the correction lens section 3 driven in response to the target position information from the sine wave signal setting section 582a from the position data input section 57, and stores it in the memory ( (RAM) 583. In addition, the driving performance measuring unit 582b
Each time the target position information is set, an error between the target position and the captured lens position is obtained and stored in a memory (RAM) 583. Thus, the measurement of the driving performance is completed when the acquisition of the lens position information and the calculation of the error for all the target position information forming the sine wave signal are completed, and the response error information for the sine wave signal is obtained.

After measuring the driving performance, the driving performance measuring section 582b obtains the standard deviation σ from the response error information stored in the memory 583. In addition, not only the standard deviation σ but also an integrated value of each error may be used.

The driving performance evaluation section 582c determines whether or not the standard deviation σ is less than 10 [μm]. The drive performance is evaluated by this determination.

The increase / decrease rate setting unit 582d determines that the standard deviation σ is 1
If it is 0 [μm] or more, the setting number is decremented by “1”.
The rate of increase / decrease of the set number after the decrement with respect to the differential gain correction amount is read from the data table of (Table 1) and set in the correction gain setting unit 54.

The exposure control unit 8 shown in FIG.
1 and an exposure determining unit 82. Photometry section 8
Reference numeral 1 denotes a photoelectric conversion element such as Cds (cadmium sulfide) that receives light from a subject and detects the brightness of the subject (subject brightness). The exposure determining unit 82 determines an appropriate exposure time (tss) according to the subject brightness. The shutter 23 is opened and closed by a shutter opening / closing unit (not shown), and is closed when the elapsed time from the opening time becomes equal to or longer than an appropriate exposure time.

The switch group monitoring unit 9 monitors the on / off of each of the plurality of switch groups. The switch group monitoring unit 9 determines, for example, whether the shutter release button has been half-pressed and the switch S1 has been turned on, and whether the switch S2 has been fully pressed and the switch S2 has been turned on. Is what you do. When the switch S1 is turned on, a shooting preparation process is executed,
When the switch S2 is turned on, a photographing process is executed.

Further, the switch group monitoring section 9 determines whether or not the switch 92 for starting the adjustment of the drive control has been turned on. Generally, this switch 92 is turned on in an adjustment process after the end of assembling the camera 1 before shipment of the product, and measurement and adjustment of drive control are performed. The present invention is not limited to this, and the measurement and adjustment of the drive control may be started when an adjustment start signal is received from an external device.

The distance measuring module 10 includes an LED that emits infrared light, a one-dimensional PSD that receives light from the LED that is reflected back from the subject, and the like, and measures the subject distance in accordance with the light receiving position of the PSD. It is a distance. The distance measuring module 10 is not limited to the active type, but may be an external light passive module including a pair of line sensors that receive light from a subject. In the external light passive module, a subject image is received by a pair of line sensors, and distance measurement data corresponding to a distance to the subject is obtained from a phase difference between the two line sensors.

The focus unit 11 is provided with the distance measuring module 10
The defocus amount is obtained in accordance with the distance measurement information from, and the photographing lens 21 is driven to the in-focus position in accordance with the defocus amount.

Next, the operation of the camera 1 will be described.
FIG. 17 is a flowchart showing the operation of the camera 1. When a power switch (not shown) is turned on, the camera 1 starts, and the switch S
It is determined whether or not 1 is on (#
5). When the switch S1 is not turned on (NO in # 5), it is determined whether or not the switch 92 is turned on (# 10). When the switch 92 is on (# 1
0 (YES), a subroutine of “drive control performance adjustment” described later is executed (# 15). If switch 92 is not on (NO in # 10), step # 15 is skipped.

When the switch S1 is turned on (#
5 and YES), the distance measurement information is obtained by the distance measurement module 10 (# 20), and the subject brightness is obtained by the photometry of the photometry unit 81 (# 25).

Next, it is determined whether or not the shutter release button has been fully pressed to turn on the switch S2 (# 30). If the switch S2 has not been turned on (# 3)
0 and NO), the flow returns to step # 20, and distance measurement and photometry are repeated.

When switch S2 is turned on (Y in # 30)
ES), the shutter 23 opens (# 35), and the elapsed time from the opening time is measured. Thereafter, the image signal is periodically taken in by the shake detecting section 4, and the shake correction is repeatedly executed (# 40). When the elapsed time from the opening time reaches the proper exposure time, the shutter 23 is closed (# 45).

FIG. 18 is a flowchart of a subroutine "drive control performance adjustment". When this subroutine is called, initialization is performed (# 50). In this initial setting, for example, a counter "C" is "0" indicating the number of times of execution of the drive performance adjustment, the setting number SN _P amplification factor is "4" for the proportional gain correction amount, the amplification factor for the differential gain correction amount setting number SN _D of is set to "4".

Next, a subroutine "stability performance adjustment" is executed (# 55), and a subroutine "driving performance measurement and σ calculation" is executed (# 60).

FIG. 19 is a flowchart of a subroutine "Stable performance adjustment". When this subroutine is called, a plurality of target position information TPn (n = 0, 1, 2,...) Forming a step signal is stored in a memory (ROM) 58.
An address counter "n" for sequentially reading from # 3 is initialized to "0"(# 100).

Next, the target position information TPn specified by the address of TA1 + n is read from the memory 583 (# 105), set in the target position setting unit 53, and set as setting data (SD _PH , SD _PV ). The serial output is set in the drive unit 6 (# 110). Accordingly, the correction lens unit 3 is driven toward the set target position. Here, TA1 is a head address in which target position information forming a step signal is stored.

Next, lens position information RPn (n = 0, 1, 2,...) Of the correction lens unit 3 is fetched (# 11).
5), is written to the address of TA2 + n in the memory (RAM) 583 (# 120). However, TA2 is
A memory (RA) for storing the lens position information RPn
M) The start address of the storage area prepared in 583.

Thereafter, the counter address "n" becomes "1".
Is incremented (# 125), and waits for a predetermined time (#
130). This waiting time is used to make the cycle between the time when the setting data is set and the time when the lens position information corresponding to the setting data is fetched about 1 [ms].
M) Consider the storage capacity of 583, the accuracy of performance evaluation, and the like.

Next, when the counter address “n” is 100
It is determined whether the value has become 0 (# 135). If the counter address “n” is not 1000 (#
(NO at 135), and returns to step # 105. When the counter address “n” reaches 1000 (YE in # 135)
S), the measurement of the stability performance of about one second sufficient to attenuate the vibration shown in FIG. 11 ends, and the maximum overshoot amount Km is extracted from the response information stored in the memory 583 (#)
140).

Next, it is determined whether or not the maximum overshoot amount Km is equal to or greater than 1.25 (# 145).
If this is the case (YES in # 145), the setting number SN _P ,
Both SN _D are decremented by 1 (# 150). Thereafter, the process returns to step # 100.

If the maximum overshoot amount Km is not equal to or greater than 1.25 (NO in # 145), it is determined whether it is equal to or less than 1.05 (# 155). If the maximum overshoot Km is 1.05 or less (YES in # 155), the setting number SN _P, SN _D are both incremented by one (# 160),
Return to step # 100. Maximum overshoot Km is 1.0
If not less than 5 (NO in # 155), the routine returns.

FIG. 20 is a flowchart of a subroutine "drive performance measurement and σ calculation". When this subroutine is called, a plurality of target position information TPn (n = 0, 1, 2,...) Forming a substantially sine wave signal is stored in a memory (R
OM) 583, an address counter “n” for sequential reading is initialized to “0” (# 200).

Next, the target position information TPn specified by the address of TA3 + n is read from the memory 583 (# 205), set in the target position setting section 53, and set as setting data (SD _PH , SD _PV ). The serial output is set in the drive unit 6 (# 210). Here, TA3 is a head address in which target position information forming a sine wave signal is stored.

Next, lens position information RPn (n = 0, 1, 2,...) Of the correction lens unit 3 is fetched (# 21).
5), is written to the address of TA4 + n in the memory (RAM) 583 (# 220). However, TA4 is
Lens position information RP which is response information to a sine wave signal
This is the start address of a storage area prepared in a memory (RAM) 583 for storing n.

Next, the error TEn (n = 0,1,2,2) of the response position with respect to the target position is calculated by the calculation of TPn-RPn.
..) Are calculated (# 225), and a memory (RAM) 583 is calculated.
Is written to the address of TA5 + n in (# 23)
0). However, TA5 is the start address of the storage area prepared in the memory (RAM) 583 for storing the error TEn.

Thereafter, the counter address "n" becomes "1".
Is incremented by one (# 235), and waits for a predetermined time (#
240).

Next, when the counter address "n" is 100
It is determined whether the value has become 0 (# 245). If the counter address “n” is not 1000 (#
(NO at 245), and returns to step # 205. When the counter address “n” reaches 1000 (YE in # 245)
S), the acquisition of the response error information of the correction lens unit 3 for the sine wave signal is completed, and the standard deviation σ is calculated for the response error information stored in the memory 583 (# 25)
0). After that, it returns.

Returning to FIG. 18, after step # 60, the counter "C" is incremented by "1"(# 65), and it is determined whether or not the standard deviation σ is less than 10 [μm]. (# 70). If the standard deviation σ is less than 10 [μm] (#
75 (YES in 75), and ends the flow with “adjustment OK” (# 75). If necessary, for example, the message "Adjustment OK" may be displayed on a display unit (not shown).

If the standard deviation σ is not less than 10 [μm] (NO in # 70), it is determined whether or not the counter "C" is equal to or more than "4"(# 80). If the counter "C" is equal to or more than "4" (YES in # 80), "adjustment NG"
And terminates this flow (# 85).

[0118] Unless counter "C" is "4" or more (# 80 NO), the setting number SN _D is "1" is decremented (# 90). Thereafter, the process returns to step # 55.

In the present embodiment, the stability performance and the drive performance of the camera 1 are adjusted by the built-in drive control adjustment unit 58. However, the drive control adjustment unit 5 is not necessarily required.
It is not necessary to incorporate 8 and it may be adjusted by an external device such as a computer as a drive control adjustment unit.

FIG. 21 is a configuration diagram of an external adjustment device (personal computer) as a drive control adjustment unit. The personal computer (PC) 100 is programmed to have functions of a target position setting unit 101, a position data input unit 102, a performance measurement evaluation unit 103, and an increase / decrease rate setting unit 104. Further, the personal computer 100 has a data table of (Table 1) and a memory 105 for storing a plurality of target position information forming a step signal and a sine wave signal, as in the above embodiment. The adjustment start unit 106 responds to communication with the camera 1 as an external device,
This starts the adjustment of the stability performance and the driving performance. More specifically, for example, when a predetermined operation is performed on a keyboard or a mouse (not shown) connected to the personal computer 100 in accordance with a display on a monitor or the like, an adjustment start signal is transmitted to the camera 1. Is started when a response signal to is received.

The target position setting section 101 comprises a step signal setting section 101a and a sine wave signal setting section 101b. The step signal setting unit 101a sequentially reads target position information for forming a step signal from the memory 105 at the time of measuring the stable performance, and the drive control circuit 61 of the camera 1
(Buffers 601 and 602). The sine wave signal setting unit 101b sequentially reads out target position information for forming a sine wave signal from the memory 105 at the time of driving performance measurement, and reads the drive control circuit 61 of the camera 1 (the buffer 60).
1, 602).

The position data input unit 102 is connected to the position detector 7
Are subjected to A / D conversion, and from the obtained output data, respective position information of the horizontal shake correction lens 31 and the vertical shake correction lens 32 is obtained. The position data input unit 102 is not limited to this, and may be configured to take in output data from the position data input unit 57 of the camera 1.

The performance measurement / evaluation section 103 executes the same arithmetic processing operation as the stability performance measurement section 518b and the stability performance evaluation section 581c of the above embodiment when measuring the stability performance, and performs the drive performance measurement section 582b when measuring the drive performance. And an operation processing operation similar to that of the drive performance evaluation unit 582c.

The change rate setting section 104 operates in the same manner as the change rate setting section 581d when measuring the stable performance, and operates similarly to the change rate setting section 582d when measuring the driving performance.

When the personal computer 100 is configured as described above, it becomes possible to adjust the stable performance and the driving performance to an appropriate state as in the above embodiment.

In the present embodiment, the stable performance and the driving performance are adjusted by increasing or decreasing the gain correction amount. However, the present invention is not limited to this.
The adjustment may be made by increasing or decreasing each output signal of the VP gain correction circuits 614 and 615 and the VD gain correction circuits 616 and 617. In short, the adjustment may be made so that the input signal of the driver 620 increases or decreases.

[0127]

As is apparent from the above description, according to the first, seventh, and eighth aspects of the present invention, it is possible to adjust a drive control system that performs shake correction while maintaining a feedback loop of a servo circuit. Thus, stable performance and drive performance suitable for camera shake correction can be provided.

According to the second aspect of the present invention, it is possible to adjust the drive control system so as to have high stability performance against camera shake.

According to the third aspect of the invention, it is possible to perform a more realistic camera shake correction drive.

According to the fourth aspect of the invention, it is possible to adjust the drive control system so as to have high drive performance against camera shake.

According to the fifth aspect of the present invention, it is possible to adjust the drive control system so as to have high drive performance and stable performance against camera shake.

According to the invention, the measurement and adjustment of the stable performance and the drive performance can be started to be executed, for example, through communication.

[Brief description of the drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a perspective view of a vertical shake correction lens and the like stored in a lens barrel.

FIG. 3 is a diagram illustrating an example of a shake detection area covered by a shake detection unit.

FIG. 4 is a block diagram illustrating a configuration of a shake amount detection unit.

FIG. 5 is an explanatory diagram of shake amount data selection and extraction by a data selection unit.

FIG. 6 is a block diagram showing an example of a drive control circuit forming a part of a servo circuit.

FIG. 7 is a temperature characteristic diagram of a motor torque which is a factor of a change in drive characteristics.

FIG. 8 is a configuration diagram of a horizontal position detection unit.

FIG. 9 is a block diagram of a position detection unit.

FIG. 10 is a block diagram illustrating a configuration of a drive control adjustment unit.

FIG. 11 is a diagram illustrating a step signal formed by target position information and a state of movement of a correction lens unit in response to the step signal.

FIG. 12 is a graph showing a relationship between a maximum overshoot amount and a phase margin.

FIG. 13 is a diagram showing a sine wave signal formed by target position information and a state of movement of the correction lens unit 3 responsive thereto.

FIG. 14 is a response characteristic diagram of the correction lens unit when the gain of the drive control circuit is large.

FIG. 15 is a response characteristic diagram of the correction lens unit when the gain of the drive control circuit is small.

FIG. 16 is a response characteristic diagram of the correction lens unit when the gain of the drive control circuit is optimal.

FIG. 17 is a flowchart showing the operation of the camera.

FIG. 18 is a flowchart of a subroutine of “drive control performance adjustment”.

FIG. 19 is a flowchart of a subroutine of “stable performance adjustment”.

FIG. 20 is a flowchart of a subroutine of “driving performance measurement and σ calculation”.

FIG. 21 is a configuration diagram of an external adjustment device (personal computer) as a drive control adjustment unit.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 camera 2 imaging unit 3 correction lens unit (driven unit) 4 shake detection unit 5 shake correction amount setting unit 6 drive unit (drive control system) 7 position detection unit (drive control system) 8 exposure control unit 9 switch group monitoring unit DESCRIPTION OF SYMBOLS 10 Distance measuring module 11 Focusing part 21 Shooting lens 22 Film 23 Shutter 31 Horizontal shake correction lens (Driven part) 32 Vertical shake correction lens (Driven part) 41 Detection lens 42 Shake sensor 43 Shake sensor control part 44 Signal processing part 51 Deflection amount detection unit 52 Coefficient conversion unit 53 Target position setting unit 54 Correction gain setting unit (drive control system) 55 Temperature sensor 56 Memory 57 Position data input unit 58 Drive control adjustment unit (Stable performance evaluation unit, Drive performance evaluation unit, Adjustment information setting means) 61 drive control circuit (drive control system) 62 horizontal actuator (drive control system) 63 vertical actuation Neuter (drive control system) 71 Horizontal position detection unit (drive control system) 72 Vertical position detection unit (drive control system) 92 Switch (instruction member) 581 Stability performance adjustment unit (stability performance evaluation means, adjustment information setting means) 582 Drive Performance adjustment unit (drive performance evaluation unit, adjustment information setting unit) 581a Step signal setting unit (stable performance evaluation unit) 582b Stability performance measurement unit (stable performance evaluation unit) 582c Stability performance evaluation unit (stable performance evaluation unit) 582d Setting unit (adjustment information setting unit) 582a sine wave signal setting unit (drive performance evaluation unit) 582b drive performance measurement unit (drive performance evaluation unit) 582c drive performance evaluation unit (drive performance evaluation unit) 582d increase / decrease rate setting unit (adjustment information) Setting means) 100 personal computer 101 target position setting unit (stable performance evaluation means, drive performance evaluation means) 102 position data Data input section 103 performance measurement evaluation section (stable performance evaluation section, drive performance evaluation section) 104 increase / decrease rate setting section (adjustment information setting section) 105 memory 106 adjustment start section (instruction member) 101a step signal setting section (stable performance evaluation section) 101b) Sine wave signal setting unit (drive performance evaluation means)

Claims (8)

[Claims] 1. A drive control system for correcting a shake of a camera body with respect to a subject, a step signal being supplied, and a stability performance evaluation means for evaluating a stability performance from a response operation state from a driven part; A predetermined signal is supplied to the system, and drive performance evaluation means for evaluating drive performance from a response operation state from the driven part, and adjustment information corresponding to each obtained evaluation are set in the drive control system. A camera with a shake correction function comprising adjustment information setting means. 2. The camera with a shake correction function according to claim 1, wherein the evaluation of the drive control system with respect to the step signal is performed based on a maximum overshoot amount. 3. The camera with a shake correction function according to claim 1, wherein the predetermined signal is a sine wave. 4. The evaluation of the drive control system with respect to the predetermined signal is performed based on an integrated value of an error from a response position with respect to a target position indicated by the sine wave. Camera with shake correction function as described. 5. The drive performance evaluation means for evaluating the drive performance in a state where the adjustment information is set in the drive control system by the stability performance evaluation means. A camera with a shake correction function according to any one of claims 1 to 4. 6. The shake according to claim 1, wherein the camera body is provided with an instruction member for instructing operation of the stability performance evaluation unit and the drive performance evaluation unit. Camera with correction function. 7. A drive control system housed in the camera body for correcting a shake of the camera body with respect to a subject, wherein the drive control performs a shake correction drive control for the driven portion using the set adjustment information. In the adjusting method for the control system, a step signal is supplied to the drive control system to drive the driven part, a response operation state is detected to evaluate a stable performance, and a predetermined performance is determined for the drive control system. Is supplied to drive the driven part, the response operation state is detected, the drive performance is evaluated, and the adjustment information corresponding to the obtained evaluation regarding the stable performance and the drive performance is set in the drive control system. A method for adjusting a shake correction drive control system. 8. A drive control system housed in the camera body for correcting a shake of the camera body with respect to an object, wherein the drive control performs a shake correction drive control for the driven part using the set adjustment information. An adjustment device for shake correction drive for a control system, wherein a stability control evaluation means for supplying a step signal to the drive control system and evaluating stability performance from a response operation state from the driven part; A predetermined signal is supplied to the system, and drive performance evaluation means for evaluating drive performance from a response operation state from the driven part, and adjustment information corresponding to each obtained evaluation are set in the drive control system. An adjustment device for a shake correction drive control system, comprising: adjustment information setting means.