CN107063297A - A kind of rate gyroscope exerciser - Google Patents

Abstract

A rate gyro tester, including single pole single throw switch (S1), single pole double throw switch (S2), single pole double throw switch (S3), fuse (F1), ammeter (A1), positive test hole (FLAG+), negative Test hole (FLAG‑), positive output test hole (OUTPUT+), negative output test hole (OUTPUT‑), and first resistor (R1), second resistor (R2), third resistor (R3), fourth resistor ( R4), the first single-pole single-throw switch (S1) controls the power supply, the fuse (F1) and the ammeter (A1) are connected in series; the middle position of the second single-pole double-throw switch (S2) is connected to the positive test hole (FLAG+), and the second single-pole double-throw The double-throw terminals of the switch (S2) correspond to the first resistor (R1) and the second resistor (R2) respectively, and the first resistor (R1) and the second resistor (R2) are connected to the negative test hole (FLAG‑); the third single-pole double-throw The middle position of the switch (S3) is connected to the positive output test hole (OUTPUT+), and the double-throw end of the third single-pole double-throw switch (S3) corresponds to the third resistor (R3), the fourth resistor (R4), the third resistor (R3), The fourth resistor (R4) is connected to the negative output test hole (OUTPUT-).

Description

A rate gyro tester

technical field

The invention belongs to the field of aircraft failure testing, in particular to a rate gyro tester.

Background technique

At present, our factory does not have this kind of calibration equipment, so we cannot test the various functions and detailed technical indicators of this speed gyroscope before installation, and install it directly; The fault is still the fault of the on-board circuit or other cross-linking equipment, which can only be solved on the plane, and the fault phenomenon cannot be reproduced on the ground.

Contents of the invention

The technical problem to be solved in the present invention:

It is a speed gyro tester that can comprehensively test various performance indicators of the product, adopts external general-purpose equipment, reduces costs, simplifies design, has higher reliability of the tester, and avoids repeated construction of the laboratory.

Technical scheme of the present invention:

A rate gyro tester, comprising SPST switch S1, SPDT switch S2, SPDT switch S3, fuse F1, ammeter A1, test holes FLAG+, FLAG-, OUTPUT+, OUTPUT-, and resistors R1, R2, R3, R4, the single-pole single-throw switch S1 controls the power supply, the fuse F1 and the ammeter A1 are connected in series; the middle position of the single-pole double-throw switch S2 is connected to the test hole FLAG+, and the double-throw terminals correspond to resistors R1 and R2 respectively, and the resistors R1 and R2 are connected The test hole FLAG-; the middle position of the single-pole double-throw switch S3 is connected to the test hole OUTPUT+, and the double-throw terminals are respectively corresponding to resistors R3 and R4, and the resistors R3 and R4 are connected to the test hole OUTPUT-.

Beneficial effects of the present invention:

The invention has reasonable design and solves the difficulties of linearity, isolation, anti-interference and the like. When the staff detects this kind of rate gyroscope, the external connection is simple and the operation is easy. On the one hand, the tester can conduct a comprehensive performance test on the rate gyroscope, avoiding direct installation of faulty products, thereby improving the efficiency and quality of aircraft assembly; on the other hand, it can quickly locate the fault point of the faulty product, allowing maintenance personnel to quickly determine and repair .

Description of drawings

Figure 1 shows the schematic diagram of the tester;

Figure 2 shows the connection diagram for the test.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a rate gyro tester consists of SPST switch S1, SPDT switches S2, S3, fuse F1, ammeter A1, test holes FLAG+, FLAG-, OUTPUT+, OUTPUT-, and resistors R1, R2, R3, R4 composition.

The high end of the 115V 400 Hz AC power supply is connected to the high end of the AC excitation power supply of the rate gyro plug through the SPST switch S1 and the fuse F1 through the ammeter A1, and the low end of the 115V 400 Hz AC power supply is connected to the low end of the AC excitation power supply of the rate gyro plug and the shell The body is connected to the ground to provide the working power for the rate gyro. The test hole FLAG+ is connected to the positive end of the rate gyro plug turning rate flag, and at the same time connected to the c point of the single pole double throw switch S2, the a point of S2 is connected to one end of the resistor R1, and the other end of R1 is connected to the test hole FLAG-, and at the same time connected to The speed gyro plug is connected to the negative terminal of the turn rate flag, point b of S2 is connected to one end of the resistor R2, the other end of R2 is connected to the test hole FLAG-, and is connected to the negative end of the rate gyro plug turn rate flag. When S2 is turned to point a, the turn rate flag load is R1, the resistance value is 560Ω, the power is 3W, and the accuracy is 1%. When S2 is turned to point b, the turn rate flag load is R2, the resistance value is 280Ω, and the power is 3W with an accuracy of 1%. The high end of the precision voltmeter is connected to the test hole FLAG+, and the low end of the precision voltmeter is connected to the test hole FLAG-, which are used to detect the turn rate flag voltage under different loads.

The test hole OUTPUT+ is connected to the positive end of the turn rate output of the rate gyro plug, and at the same time connected to the point e of the single pole double throw switch S3, the point d of S3 is connected to one end of the resistor R3, and the other end of R3 is connected to the test hole OUTPUT-, and at the same time connected to The rate gyro plug is connected to the negative terminal of the turn rate output, the point f of S3 is connected to one end of the resistor R4, and the other end of R4 is connected to the test hole OUTPUT-, and is connected to the negative end of the rate gyro plug turn rate output. When S3 is turned to point d, the turn rate output load is R3, the resistance is 1000Ω, the power is 1/4W, and the accuracy is 1%. When S3 is turned to f point, the turn rate output load is R4, and the resistance is 500Ω , the power is 1/4W, and the accuracy is 1%. The high end of the precision voltmeter is connected to the test hole OUTPUT+, and the low end of the precision voltmeter is connected to the test hole OUTPUT-, which is used to detect the output voltage of the turn rate under different loads.

During the test, refer to Figure 2, level the electric turntable, install the rate gyro on the turntable, connect the rate gyro to the tester with an adapter cable, connect the 115V/400Hz AC power supply to the rate gyro tester, and turn the switch S1 is disconnected.

1. Power consumption check

1. Turn on the 115V/400Hz AC power supply, turn on the switch S1, and read the ammeter A1 at a maximum of 0.4 amperes.

After 23 minutes, the maximum ammeter A1 does not exceed 0.22 amperes during normal operation.

2. Turn rate warning check

1 Turn on the switch S1, turn the switch S2 to the a or b position according to the requirements of different types of speed gyroscopes, and select different loads. At the same time, the precision voltmeter detects that the turn rate alarm should be less than or equal to 1VDC.

2 After switching on switch S1 for 2 minutes, turn switch S3 to position d or f according to the requirements of different types of speed gyroscopes, and select different loads. The precision voltmeter detects that the turn rate alarm should be greater than or equal to 25VDC and 30VDC.

3. Turn rate output check

1) The electric turntable is in the horizontal state. According to the requirements of different types of speed gyroscopes, turn the switch S3 to the d or f position, select different loads, and connect the precision voltmeter to the OUTPUT+ and OUTPUT- test holes to detect the zero output voltage of the turning rate. :0±33mVDC.

2) Let the electric turntable rotate clockwise at a speed of 3°/s, and connect the precision voltmeter to the OUTPUT+ and OUTPUT- test holes to detect the turning rate and the output voltage should be between +0.9～+1.1VDC.

3) Let the electric turntable rotate counterclockwise at a speed of 3°/s, and connect the precision voltmeter to the OUTPUT+ and OUTPUT- test holes to detect the turning rate and the output voltage should be between -0.9~-1.1VDC.

4) Connect the oscilloscope between the OUTPUT+ and OUTPUT- test holes, and the peak-to-peak voltage of the turn rate output should be less than or equal to 93mVAC.

Claims (1)

1. a kind of rate gyroscope exerciser, it is characterised in that including single-pole single-throw switch (SPST) (S1), single-pole double-throw switch (SPDT) (S2), list Double-pole double throw switch (S3), fuse (F1), ammeter (A1), instrument connection (FLAG+), (FLAG-), (OUTPUT+), (OUTPUT-), and resistance (R1), (R2), (R3), (R4), the single-pole single-throw switch (SPST) (S1) controls power supply, inline fuse And ammeter (A1) (F1)；Single-pole double-throw switch (SPDT) (S2) the interposition connecting test hole (FLAG+), double-throw end corresponds to electricity respectively Hinder (R1), (R2), resistance (R1), (R2) connecting test hole (FLAG-)；Single-pole double-throw switch (SPDT) (S3) the interposition connecting test Hole (OUTPUT+), double-throw end corresponds to resistance (R3), (R4), resistance (R3), (R4) connecting test hole (OUTPUT-) respectively.