[go: up one dir, main page]

CN1060825C - Automatic control method and system for cottonseed roll density in stripping machine - Google Patents

Automatic control method and system for cottonseed roll density in stripping machine Download PDF

Info

Publication number
CN1060825C
CN1060825C CN94117684A CN94117684A CN1060825C CN 1060825 C CN1060825 C CN 1060825C CN 94117684 A CN94117684 A CN 94117684A CN 94117684 A CN94117684 A CN 94117684A CN 1060825 C CN1060825 C CN 1060825C
Authority
CN
China
Prior art keywords
pressing plate
density
cotton seed
controller
cottonseed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN94117684A
Other languages
Chinese (zh)
Other versions
CN1106866A (en
Inventor
丁天怀
王劲松
王铁林
张宏雷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsinghua University
Original Assignee
Tsinghua University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tsinghua University filed Critical Tsinghua University
Priority to CN94117684A priority Critical patent/CN1060825C/en
Publication of CN1106866A publication Critical patent/CN1106866A/en
Application granted granted Critical
Publication of CN1060825C publication Critical patent/CN1060825C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Preliminary Treatment Of Fibers (AREA)

Abstract

本发明属于棉花加工机械的自动控制技术领域，本发明提出在剥绒机工作箱压板上固接一个带有可滑动重锤的水平标尺，在机架上安装一个检测压板摆角的角度传感器，通过压板角度变化去控制调速电机及其调速控制器、减速器等部件的密度控制仪，完成棉籽卷密度自动控制的方法及系统。本发明操作简单、明了工作可靠，控制效果显著，可适用于各种型号的剥绒机。

The invention belongs to the technical field of automatic control of cotton processing machinery. The invention proposes to fix a horizontal ruler with a slidable weight on the pressing plate of the working box of the cashmere stripping machine, and install an angle sensor for detecting the swing angle of the pressing plate on the frame. The method and system for automatically controlling the density of cotton seed rolls are realized by controlling the density controller of the speed-regulating motor and its speed-regulating controller, reducer and other components through the change of the angle of the pressing plate. The invention is easy to operate, clear and reliable in operation, and has remarkable control effect, and can be applied to various types of cashmere stripping machines.

Description

Delinter cottonseed volume density autocontrol method and automatic control system thereof
The invention belongs to the automatic control technology field of cotton processing machinery, particularly to the autocontrol method and the device of delinter cottonseed volume density.
The cottonseed volume density of delinter is meant the tightness that cottonseed is rolled up in the working box in the delinter, and it is the key factor that suede quality and treating capacity are shelled in directly influence.The cottonseed volume density is big more, and the treating capacity of delinter is high more, but stripping suede is of poor quality; Otherwise when cottonseed volume density hour, stripping suede quality is good, but treating capacity is low.Therefore, be necessary to the control of cottonseed volume density, have only the cottonseed volume density is controlled on the proper level, can existing reasonable crudy, also can reach certain treating capacity simultaneously.The autocontrol method of delinter cottonseed volume density and the research of implement device are subjected to paying close attention to widely, and obtain remarkable progress.
The size of cottonseed volume density depends on the seed speed of feeding.Because the shape of delinter working box, size are fixed basically, so hello seed speed is high more, the cottonseed volume density will be big more; Otherwise the cottonseed volume density can be more little.Feeding seed is to finish by relatively rotating of seed feeding roller, therefore feeds the rotating speed that seed speed depends on seed feeding roller again.Therefore, adopt what method to go control to adjust the seed feeding roller rotating speed, choose which type of detection method, how the signal of relevant cottonseed volume density is gathered, and is to realize cottonseed the volume density key problem in technology and the technological difficulties of control automatically.
At present, all delinters all adopt mechanical cottonseed volume autocontrol method.This method operation principle has the pressing plate that can swing as shown in Figure 1 above the delinter working box, its pivot angle changes with cottonseed roll-shape size variation.Between seed feeding roller and drive motors, be provided with a clutch, it links to each other with pressing plate by a cover mechanism, and when the clockwise pendulum angle of pressing plate surpasses certain value, this cover mechanism will make throw-out-of clutch, stop to feed seed.That is to say that when the cottonseed volume arrives to a certain degree greatly, this cover mechanism will guarantee to feed seed and stop, and reduce up to the cottonseed volume.This method is actually thinks that the shape size of cottonseed volume has reflected the cottonseed volume density, thereby has reached the purpose of controlling its density by restriction cottonseed roll-shape size.
The weak point of this method is: 1. controlled variable is the shape size of cottonseed volume, untrue reflection cottonseed volume density: 2. structure more complicated, adjust also very inconvenient: 3. the briquetting swing is frequent, causing and feeding seed is an intermittent process, cottonseed volume density in the working box is therefore in fact also unstable, thereby has influenced stripping suede quality; 4. on effect, this method does not play the effect of stable regulation cottonseed volume density, and just makes the cottonseed volume density be no more than certain value.
The objective of the invention is to overcome above-mentioned existing methods weak point, propose a kind of brand-new autocontrol method and automatic control system thereof the cottonseed volume density.Make it have advantages such as the control effect is remarkable, method is simple, easy and simple to handle, anti-working environment disturbs by force, working stability is reliable.
The delinter cottonseed volume density autocontrol method that the present invention proposes comprises at least that pivot angle that by delinter working box top one can swing pressing plate changes to control to feed the seed buncher, and this method comprises following each step:
(1), regulates this weight in the position on the scale and this weight is located on scale, so that the restriction of pressing plate pivot angle within the specific limits by being secured to the slip weight of installing on a horizontal ruler on the described pressing plate and this scale;
(2) angular transducer of installing on frame by the pressing plate top, the pressing plate pivot angle value that is reflected owing to the cottonseed volume density fluctuation that forms in the working box when constantly measuring delinter work also converts this pivot angle value to signal of telecommunication U α
(3) by a cottonseed volume density auto-controller to above-mentioned signal U αHandle to obtain a control signal U c
(4) with control signal U cInput electric machine speed regulation controller so that FEEDBACK CONTROL is fed the seed buncher, makes the corresponding change of this motor speed, feeds seed speed so that the cottonseed volume density keeps stable thereby change;
It is characterized in that above-mentioned control method can make the cottonseed volume density keep stable on new level by regulating the feedback factor of cottonseed volume density controller.
The inventor has carried out factual survey and in-depth analysis to the course of work of delinter, think, the cottonseed of different densities volume can produce different pressure to pressing plate in the working box, therefore also can cause different pivot angles simultaneously, be actually the cottonseed volume pressure and such two parameters of pressing plate pivot angle of pressing plate have been reflected the cottonseed volume density in the working box.For this reason, the present invention proposes a kind of autocontrol method of brand-new delinter cottonseed volume density, even pressing plate produces adjustable fixation pressure to the cottonseed volume, monitor the pivot angle of delinter course of work center platen simultaneously, and this pivot angle signal is converted to the signal of telecommunication, FEEDBACK CONTROL is adjusted the seed feeding roller rotating speed of motor again, reaches the seed speed of feeding of adjusting, the purpose of control cottonseed volume density.
The groundwork principle of this method is (mainly being divided into two aspects): 1. affixed scale on pressing plate, weight is installed on the scale, and weight can slide on scale.Along with the position difference of weight on scale, pressing plate can produce different pressure to the cottonseed volume.When weight after fixed-site on the scale, pressing plate produces a fixed pressure to cottonseed volume.At this moment, 2. the density of cottonseed volume will influence the pivot angle of pressing plate, and density is big more, and pivot angle is also big more.Angular transducer is converted to signal of telecommunication U with the pivot angle signal of pressing plate αAfter handling, produce a control signal U again c, be added on the machine governor rotation speed n of control buncher 0, and then by decelerator driving seed feeding roller control hello seed speed n FTherefore, in process,, following feedback procedure is arranged then if the cottonseed volume density increases:
α ↑ → U α↓ → U C↓ → n D↓ → n F→ α ↓, this process has suppressed the increase of cottonseed volume density.Certainly, also there is one to suppress the reduction of cottonseed volume density with above-mentioned opposite process.These two kinds of processes make the cottonseed volume density can be stabilized on certain level, and, if change the feedback proportional of this feedback procedure, the cottonseed volume density can reach stable again on a new level so, thereby realizes the automatic control and the adjusting of cottonseed volume density.
The present invention designs a kind of delinter cottonseed volume density automatic control system according to said method, at least comprise with the delinter working box on the affixed scale of pressing plate and the weight that can on scale, slide, it is characterized in that also comprising hello seed buncher and electric machine speed regulation controller, decelerator, detect the angular transducer of pressing plate pivot angle, cottonseed volume density auto-controller, said cottonseed volume density auto-controller comprises adjusts the amplifying signal modulate circuit to the signal of said sensor output, signal to this modulate circuit output carries out filter circuit for filtering, the display circuit that filtered signal is shown, the adjustable PID adjuster of parameter that filtered signal is adjusted, described angular transducer is connected to described cottonseed volume density auto-controller, described cottonseed volume density auto-controller is connected with described electric machine speed regulation controller by its PID adjuster, and described decelerator is connected between motor output end and the seed feeding roller.As shown in Figure 2.Scale and pressing plate are affixed, and weight can be so that pressing plate produces a fixed pressure to the cottonseed volume after fixed-site on the scale.Angular transducer and frame are fixed, detect the pivot angle of pressing plate by the spacing that detects gauge head and pressing plate, and convert the pivot angle signal to the signal of telecommunication and be input in the density controller, handle back output one control signal and remove to control the electric machine speed regulation controller, and then adjustment rotating speed of motor, make seed feeding roller speed obtain adjusting, thereby guarantee that the cottonseed volume density remains under the stable state.
The critical component of native system is a density controller, and it is made up of each circuit of the adjustable PID adjuster of signal conditioning circuit, filter circuit, display circuit and parameter, as shown in Figure 3.
Wherein, 1. signal conditioning circuit is mainly finished adjustment, the amplification to the sensor output signal of telecommunication, makes its excursion be suitable for the required scope of machine governor; 2. filter circuit is used for the filtering input signal because the caused AC compounent of machine vibration; 3. display circuit can drive analog meter or digital watch to show the pairing pressing plate pivot angle of the cottonseed volume density value of actual measurement; 4. the adjustable PID adjuster of parameter, in this PID control correction link, specially PI and PD link are separated, and can distinguish in the larger context and regulate separately, do like this and make controller can be adapted to different types, different working environment and job requirement, under various conditions, as long as this PID adjuster is done suitably to adjust, just can make controller control effect reach best.The whole circuit of controller are installed in the instrument box, at the instrument container front panel demonstration and density setting knob are installed, this knob can change the feedback proportional in the feedback procedure noted earlier, thereby can set the interior cottonseed volume density of working box by it.
The present invention has following characteristics:
(1) the measured object of this method has reflected the cottonseed volume density exactly, and practice shows that this reflection is very sensitive, and the control effect is remarkable;
(2) feeding seed is continuous process, has therefore improved stripping suede quality widely, has guaranteed process throughput;
(3) practice shows, this automatic control system makes suede cotton amount improve a grade on the basis that guarantees the machining treating capacity, and can guarantee that this quality keeps stable in the processing overall process;
(4) simple to operate, clear, the reliable operation of this automatic control system;
(5) native system measure error≤3%, departure≤8%.
This automatic control system can be assemblied on the various trades mark, the various types of delinter easily, all can reach above-mentioned performance and technical indicator through Installation and Debugging.
Brief Description Of Drawings:
Fig. 1 is a prior art operation principle schematic diagram.
Fig. 2 is a general structure schematic diagram of the present invention.
Fig. 3 is a cottonseed volume density auto-controller circuit theory schematic diagram of the present invention.
Fig. 4 is an embodiments of the invention cottonseed volume density auto-controller circuit theory schematic diagram.
The present invention designs the cottonseed volume density automatic control system embodiment on a kind of MRF160-10 of being assemblied in type delinter, and it partly is made up of scale and weight, angular transducer, cottonseed volume density auto-controller, machine governor, buncher, decelerator etc.
Each several part is described in detail as follows:
The general structure of present embodiment as shown in Figure 2, among the figure:
1. the long 500mm of scale, minimum scale 5mm, weight weight 1kg.Scale and delinter working box top board are affixed, can swing with pressing plate.Weight can slide on scale, and holding screw is arranged, when weight after set up position on the scale, can weight be tightened on the scale by screw;
2. angular transducer adopts the non-contact electric eddy sensor, its gauge head is fixed on the frame, pivot angle corresponding to pressing plate changes in 0 °～30 ° scopes, and the gap between gauge head and hold-down plate surface changes between 3mm～0.5mm, and sensor records the pressing plate pivot angle indirectly by surveying the gap.The range of sensor is 3mm, certainty of measurement 1%, and with voltage system output, output voltage range 0～-12V.0.4 volt/degree of sensitivity.
3. cottonseed volume density auto-controller is installed in the controller chassis of delinter, has a voltage input and a voltage output.Voltage input meets sensor output U αAnd be that sensor is powered; Voltage output connects machine governor, output voltage control signal U cAnd obtain the required power supply of instrument work from the latter.The static relation of its output, input is
U c=-K FU α
Wherein KF is adjustable constant, is used for the setting of cottonseed volume density.
The circuit theory of present embodiment cottonseed volume density auto-controller as shown in Figure 4.Circuit is with four operational amplifier A 1-A 4Be core formation, wherein A 1Finish the function of signal condition, filtering; A 2Be used to drive density indication gauge outfit CS, indicate the pressing plate pivot angle, i.e. the density situation; A 3, A 4Then constituted the adjustable PID adjuster of parameter, can be by regulating duplex potentiometer R 1Or R 2Regulate its dynamic parameter, so that instrument is adapted to different types, different working environment and the control under the job requirement.At the output of instrument, by regulator potentiometer R 3Change feedback factor KF noted earlier, set selector switch K is used for the switching of the manual duty of system, and when K switch was in shown position, system works was an auto state, and when being in the another location, system is in the manual work state.
4. machine governor has the input of two-way voltage, and wherein one the tunnel for the input of control voltage, connects the output of cottonseed volume density controller; Another road is the feedback voltage input, connects the tachometer generator voltage output in the buncher.Its output connects the armature of buncher electromagnetic clutch, and utilization controllable silicon DC speed regulation method is adjusted buncher.
5. buncher is the electromagnetic type buncher, by the speed governing of control electromagnetic clutch armature supply.Its power is 0.8KW, adjustable range of speeds 0-1400rpm.
6. the decelerator speed reducing ratio is 1: 70, and power shaft connects buncher by 1: 1: 5 belt, and output shaft drives the delinter seed feeding roller.
The whole system course of work can be described below:
In the adjusting stage at initial stage of machine, system can place the manual work state by switch among Fig. 4, and feeding seed will be by workman's manual adjustments potentiometer R 3Change hello seed motor speed and finish, in this course, regulate weight position on scale, make pressing plate pivot angle maximum be no more than 30 °, tighten weight then.
At this moment, system can be placed in automatic mode.Sensor is measured pressing plate pivot angle α, converts voltage signal U to αGive density controller, machine governor is exported the control voltage U by it C, so that buncher is in rotation speed n DFollowing operation, and drive seed feeding roller with rotation speed n by decelerator FFeed seed, the cottonseed under institute feeds will make pressing plate generation pivot angle α.This dynamic process reaches a dynamic equilibrium the most at last because, if pressing plate pivot angle α increases, will have α ↑ → U α↓ → U C↓ → n D↓ → n F→ α ↓, such negative feedback process suppresses its increase; On the contrary, the pressing plate pivot angle reduce also can be suppressed.Thereby such control system makes the pressing plate pivot angle stable, that is to say and has stablized the cottonseed volume density.If regulator potentiometer R 3, system again can be under new cottonseed volume density state steady operation.

Claims (2)

1、一种剥绒机棉籽卷密度自动控制方法，至少包括通过剥绒机工作箱上方的一块可摆动压板的摆角变化来控制喂籽调速电机，该方法包括以下各步骤：1. A method for automatically controlling the density of cottonseed rolls of a cashmere stripping machine, at least comprising controlling the seed-feeding speed-regulating motor through the change of the swing angle of a swingable pressing plate above the working box of the cashmere stripping machine. The method includes the following steps: (1)通过固接到所述压板上的一个水平标尺及该标尺上安装的滑动重锤，调节该重锤在标尺上的位置并使该重锤在标尺上定位，以使压板摆角限制在一定范围内；(1) Adjust the position of the weight on the scale and position the weight on the scale through a horizontal scale fixed to the pressure plate and a sliding weight installed on the scale, so that the swing angle of the pressure plate is limited Within a certain range; (2)通过压板上方在机架上安装的角度传感器，不断测出剥绒机工作时由于工作箱内形成的棉籽卷密度波动所反映的压板摆角值并将该摆角值转换成电信号Uα；(2) Through the angle sensor installed on the frame above the pressing plate, the pendulum angle value of the pressing plate reflected by the cotton seed roll density fluctuation formed in the working box is continuously measured when the stripping machine is working, and the pendulum angle value is converted into an electrical signal U α ; (3)借助一个棉籽卷密度自动控制仪对上述信号Uα进行处理以获得一个控制信号Uc；(3) Process the above-mentioned signal U α with the help of an automatic controller of cotton seed roll density to obtain a control signal U c ; (4)将控制信号Uc输入电机调速控制器，以便反馈控制喂籽调速电机，使该电机转速相应改变，从而改变喂籽速度以使棉籽卷密度保持稳定；(4) Input the control signal U c into the motor speed controller, so as to feed back the seed feeding speed regulating motor, so that the motor speed changes accordingly, thereby changing the seed feeding speed to keep the cotton seed roll density stable; 其特征在于，上述控制方法可以通过调节棉籽卷密度控制仪的反馈系数，使棉籽卷密度在新的水平上保持稳定。It is characterized in that the above control method can keep the cotton seed lap density stable at a new level by adjusting the feedback coefficient of the cotton seed lap density controller. 2、一种如权利要求1所述方法的棉籽卷密度自动控制系统，至少包括与剥绒机工作箱上的压板固接的标尺和可在标尺上滑动的重锤，其特征在于还包括喂籽调速电机及电机调速控制器，减速器，检测压板摆角的角度传感器，棉籽卷密度自动控制仪，所说的棉籽卷密度自动控制仪包括对所说传感器输出的信号进行调整放大的信号调理电路，对该调理电路输出的信号进行滤波的滤波电路，将滤波后的信号进行显示的显示电路，对滤波后的信号进行调整的参数可调的PID调节器，所述的角度传感器连接到所述的棉籽卷密度自动控制仪，所述的棉籽卷密度自动控制仪通过其PID调节器与所述的电机调速控制器连接，而所述的减速器连接于电机输出端与喂籽辊之间。2. An automatic control system for cotton seed roll density according to the method of claim 1, at least comprising a scale fixed to the pressing plate on the working box of the cashmere stripping machine and a weight that can slide on the scale, and it is characterized in that it also includes a feeder. Seed speed-regulating motor and motor speed-regulating controller, reducer, angle sensor for detecting the swing angle of the pressing plate, automatic control instrument for cotton seed roll density, the automatic control instrument for cotton seed roll density includes a device for adjusting and amplifying the signal output by the sensor A signal conditioning circuit, a filter circuit for filtering the signal output by the conditioning circuit, a display circuit for displaying the filtered signal, a PID regulator with adjustable parameters for adjusting the filtered signal, the angle sensor connected To the automatic control instrument for cotton seed roll density, the automatic control instrument for cotton seed roll density is connected with the motor speed control controller through its PID regulator, and the described speed reducer is connected with the output end of the motor and the seed feeding between the rolls.
CN94117684A 1994-11-04 1994-11-04 Automatic control method and system for cottonseed roll density in stripping machine Expired - Fee Related CN1060825C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN94117684A CN1060825C (en) 1994-11-04 1994-11-04 Automatic control method and system for cottonseed roll density in stripping machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN94117684A CN1060825C (en) 1994-11-04 1994-11-04 Automatic control method and system for cottonseed roll density in stripping machine

Publications (2)

Publication Number Publication Date
CN1106866A CN1106866A (en) 1995-08-16
CN1060825C true CN1060825C (en) 2001-01-17

Family

ID=5038471

Family Applications (1)

Application Number Title Priority Date Filing Date
CN94117684A Expired - Fee Related CN1060825C (en) 1994-11-04 1994-11-04 Automatic control method and system for cottonseed roll density in stripping machine

Country Status (1)

Country Link
CN (1) CN1060825C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103243394B (en) * 2013-04-26 2015-07-29 江苏银桥纺织科技有限公司 A kind of even cotton feeder
CN107829147A (en) * 2017-08-05 2018-03-23 广州思谋信息科技有限公司 High efficiency cotton gin is used in a kind of Cotton Production processing
CN116300754B (en) * 2023-03-24 2025-08-05 山东天鹅棉业机械股份有限公司 Control method of stripping production line

Also Published As

Publication number Publication date
CN1106866A (en) 1995-08-16

Similar Documents

Publication Publication Date Title
US4286757A (en) Method and apparatus for controlling the braking system for an unwinder
CN1040403A (en) The draft apparatus of autoleveller
CA1325048C (en) Method and apparatus for tire uniformity correction
CN113620105B (en) Wind-up roll rotating speed control method, system and storage medium
CN1060825C (en) Automatic control method and system for cottonseed roll density in stripping machine
CN1322499A (en) Automatic resharpening method and apparatus for tobacco cutting blade
HK60785A (en) Method and device for regulating the unevenness of a sliver
CN1009315B (en) Self-regulating pressure control valve
US4538772A (en) Winding apparatus
US5216217A (en) Wirecut electrical discharge machine
CN117798815B (en) Indexing table rotation control method, indexing table rotation control system and thinning machine
CN114212591B (en) Constant tension integrated correction mechanism and control method for amorphous and silicon steel winding machines
CN1027515C (en) Cotton Lap Density Automatic Control Method and Automatic Control Device for Cotton Gin
CN213500974U (en) Eccentric clearance adjusting mechanism
JP2000023623A (en) Refinement of raw materials for confectionery and its apparatus
CN108312371A (en) A kind of the closed speed control system and control method of wire sawing process
CN1241492A (en) Intelligent all-digital constant-tension control method
CN219859749U (en) Tension system suitable for excitation control of polyester optical film
CN114659976A (en) Automatic detection test device and method for static friction coefficient of crop grains
CN117107404B (en) Dynamic uniform adjustment control system for hemp strips based on weight difference method
CN2095203U (en) Automatic regulator for lapper and one side machine
CN222907173U (en) An adaptive tension regulator
RU2124594C1 (en) Textile machine feeding control system
CN112595665A (en) Device and method for measuring sliding friction coefficient between poly V-ribbed belt and belt wheel
CN220245015U (en) Tension system adjusting mechanism of dyeing paper machine

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee