CN107807677A - Centering control system for uncoiling or coiling machine - Google Patents

Abstract

The invention discloses a centering control system for an uncoiling or coiling machine, which comprises a transmitting device circuit, a receiving device circuit, a signal processing circuit and a servo valve driving circuit, wherein the transmitting device circuit outputs a transmitting signal to a signal input end of the receiving device circuit, and the receiving device circuit outputs a received signal to the signal processing circuit for sorting and feeds the signal back to the servo valve driving circuit. The invention has simple structure, convenient operation, quick response, good effect and high precision, can well realize the functions of centering and rectifying and effectively reduces the equipment cost by a continuous closed-loop adjusting system.

Description

Uncoiling or coiling machine centering control system

Technical field

The invention belongs to non-ferrous metal technical field, more particularly, to a kind of opening for non-ferrous metal plate band production lineVolume or coiling machine centering control system.

Background technology

At present, industrial enterprise band is produced or process in, it is necessary to which the accurate unbiased of band is sent into lower roadIn technique unit, the process is controlled by correction center support system and completed, with the rapid development of industry, to automation in Industry ControlIt is required that increasingly improving, in order to improve the quality of production of product and output capacity, industrial production line detection and control system are proposedHigher requirement, it is necessary to which accuracy of detection is high, and response is fast, and stability is good, strong antijamming capability；However, these requirements are realized, justMust there will be higher requirement to all parts of system, to complete the high efficiency of actual production, it is ensured that product quality.It is existingIn technology, North America or EMG center support systems are used mostly, but cost is higher, control is complicated.

The content of the invention

To solve the above problems, respond uncoiling fast, that precision is high or coiling machine use pair it is an object of the invention to provide a kind ofMiddle control system.

For achieving the above object, the present invention adopts the following technical scheme that：

A kind of uncoiling or coiling machine centering control system, it includes emitter circuit, reception device circuit, signal transacting electricityRoad and driving circuit of servo valve, the driving circuit of servo valve are put including operational amplifier IC14, operational amplifier IC15, computingBig device IC16, servo valve control switch S1, triode Q4 and triode Q5, signal L is moved to left, signal R is moved to right and passes through resistance respectivelyR52 and R53 connects operational amplifier IC15 reverse input end, and reverse input end also connects slide-wire rheostat W9's by resistance R51Centre tap, slide-wire rheostat W9 mono- terminate-VCC1, other end ground connection, and operational amplifier IC15 in-phase input end is grounded, insteadResistance R58 is connected between phase input and output end；The drive signal CTRL of the signal processing circuit output passes through resistance R54Connect operational amplifier IC14 inverting input, operational amplifier IC14 in-phase input end ground connection, inverting input and outputResistance R55 is connected between end, output end connects operational amplifier IC15 inverting input by resistance R56；Operational amplifierIC15 output end connects operational amplifier IC16 inverting input, operational amplifier IC16 homophase input by resistance R59End is grounded by resistance R64, and electric capacity C10 in parallel, servo valve control switch S1 are connected between inverting input and output end, is watchedThe input contact sets for taking valve controlling switch S1 are connected to resistance R60, resistance R61, resistance R62, resistance R63；Operation amplifierDevice IC16 output end is connected to triode Q4, triode Q5 base stage, triode Q4 collection by resistance R65, resistance R67 respectivelyElectrode meets VCC1, is connected to resistance R66 between base stage and colelctor electrode, and triode Q5 colelctor electrode meets-VCC1, base stage and colelctor electrode itBetween be connected to resistance R68, triode Q4, triode Q5 emitter stage meet CTRLV+, and CTRLV- passes through resistance R69 and resistance in parallelR70 is grounded.

Described uncoiling or coiling machine centering control system, its emitter circuit is by oscillating circuit and transmission signal electricityRoad forms, and oscillating circuit includes multivibrator IC1, the first operational amplifier IC2 and the second operational amplifier IC3, multi-resonantSwing device IC1 control source termination power supply VCC1 and be connected with slide-wire rheostat W1 one end and centre tap, slide-wire rheostatW1 another terminating resistor R1, and multi resonant is connect by the resistance R1 of series connection, resistance R2, slide-wire rheostat 2 and backward dioded D2Oscillator IC1 threshold end, multivibrator IC1 triggering input are connected with threshold end and are grounded by electric capacity C1, controlEnd processed is grounded by electric capacity C2, and the common port for the terminating resistor R1 and resistance R2 that discharges simultaneously connects multivibrator by diode D1IC1 threshold end, output termination slide-wire rheostat W3 and slide-wire rheostat W4 one end, slide-wire rheostat W3, slide-wire rheostatW4 other end ground connection；Slide-wire rheostat W3, slide-wire rheostat W4 centre tap connect fortune by resistance R3 and resistance R7 respectivelyAmplifier IC2, operational amplifier IC3 in-phase input end are calculated, resistance R4 is connected between inverting input and output end；Computing is putBig device IC2 output end is connected by resistance R5 with triode Q1 base stage, and triode Q1 colelctor electrode meets power supply VCC1, transmittingPole connects base stage by diode D3 and is grounded by light emitting diode D4, resistance R6；Operational amplifier IC3 inverting input withResistance R8 is connected between output end, operational amplifier IC3 output end is connected by resistance R9 with triode Q2 base stage, three polesPipe Q2 colelctor electrode meets power supply VCC1, and emitter stage connects base stage by diode D5 and connect by light emitting diode D6 and resistance R10Ground；Triode Q1, triode Q2 emitter stage are connected with transmission signal circuit.

Further, the transmission signal circuit of above-mentioned emitter circuit includes the binding post J1 being connected and two groupsLight-Emitting Diode group, every group of Light-Emitting Diode group are made up of multiple Light-Emitting Diodes in parallel, triode Q1 emitter stage outputSignal FS1 be grounded by first group of Light-Emitting Diode in parallel, the signal FS2 of triode Q2 emitter stage output passes through multigroupLight-Emitting Diode ground connection in parallel, each Light-Emitting Diode are serially connected with current-limiting resistance.

Described uncoiling or coiling machine centering control system, its reception device circuit include three terminal regulator IC4, infraredReception pipe Q3 and operational amplifier IC5, three terminal regulator IC4 control source termination power supply VCC1, common ground end ground connection, electricityPressure output termination infrared receiving tube Q3 colelctor electrode is simultaneously grounded by electric capacity C3, and infrared receiving tube Q3 emitter stage passes through resistanceR27, which is grounded, simultaneously connects operational amplifier IC5 inverting input by resistance R28 and electric capacity C5, and resistance R28 and electric capacity C5's is publicEnd is connected with operational amplifier IC5 output end by electric capacity C4 and is grounded by resistance R29 and resistance R30, operational amplifierResistance R31 is connected between IC5 inverting input and output end, in-phase input end is grounded by resistance R32；Operational amplifierIC5 output end is connected by resistance R33 with operational amplifier IC6 inverting input, operational amplifier IC6 homophase inputEnd ground connection, is connected to resistance R34, inverting input is connected to diode D25 by diode D24 between inverting input and output endCommon port with resistance R36, the inverting input for being connected to by resistance R36, the electric capacity C6 of parallel connection operational amplifier IC7, outputEnd is connected by diode D25, resistance R36 with operational amplifier IC7 inverting input；Operational amplifier IC7's is same mutually defeatedEnter end to be grounded by resistance R38, resistance R37 in parallel is connected between inverting input and output end and electric capacity C7, output end are led toThe inverting input that resistance R39 is crossed with operational amplifier IC8 is connected；Operational amplifier IC8 in-phase input end passes through resistance R41Ground connection, resistance R40 in parallel, electric capacity C8, output end and the signal processing circuit are connected between inverting input and output endConnection.

Described uncoiling or coiling machine centering control system, its signal processing circuit include operational amplifier IC9, computingAmplifier IC10, operational amplifier IC11, operational amplifier IC12, operational amplifier IC13, operational amplifier IC9's is anti-phase defeatedEnter the centre tap that end is connected to slide-wire rheostat W5 by resistance R41, slide-wire rheostat W5 both ends connect positive and negative power supply respectively, togetherPhase input end grounding, resistance R43 is connected between inverting input and output end, output is connected to slide-wire rheostat W6 one end, slidingThe line rheostat W6 other ends are grounded, and centre tap is connected to operational amplifier IC10 inverting input by resistance R44；Computing is putBig device IC10 in-phase input end ground connection, is connected to resistance R45 and electric capacity C9 in parallel, exports between inverting input and output endEnd is connected by resistance R46 with operational amplifier IC11 inverting input；Operational amplifier IC11 in-phase input end ground connection,The resistance R47 and slide-wire rheostat W7 to connect is connected between inverting input and output end, output end passes through resistance R48 and computingAmplifier IC12 inverting input is connected；Operational amplifier IC12 in-phase input end ground connection, inverting input and output endBetween be connected to resistance R49, output end is connected with lever indicator IC13 signal input part；Lever indicator IC13 luminous tubeMaximum brightness setting end, reference voltage output end are connected by resistance R50 with slide-wire rheostat W8 one end, and slide-wire rheostat W8 is anotherOne end is grounded, and centre tap is connected with lever indicator IC13 reference voltage setting end, lever indicator IC13 luminous tubeNegative pole end is connected to power supply VCC2 by light emitting diode D26~D33 respectively.

Due to using technical scheme as described above, the present invention has following superiority：

The uncoiling or coiling machine centering control system, its is simple in construction, easy to operate, and response is fast, and effect is good, and precision is high, evenIt continuous closed-loop regulating system, can be good at realizing centering, deviation-correcting function, and be effectively reduced equipment cost, extensive useIn cold rolling, finishing（Straightening, rewinding）Line, and system is related to face also using non-ferrous metals processing industry itself is not limited toOther numerous industries, demand are very big including steel industry etc..

Brief description of the drawings

Fig. 1 is the system block diagram of uncoiling of the present invention or coiling machine centering control system；

Fig. 2 is the schematic diagram of the oscillating circuit of the emitter circuit in Fig. 1；

Fig. 3 is the schematic diagram of the transmission signal circuit of the emitter circuit in Fig. 1；

Fig. 4 is the schematic diagram of the Part I of the reception device circuit in Fig. 1；

Fig. 5 is the schematic diagram of the Part II of the reception device circuit in Fig. 1；

Fig. 6 is the schematic diagram of the signal processing circuit in Fig. 1；

Fig. 7 is the schematic diagram of the driving circuit of servo valve in Fig. 1.

Embodiment

Technical scheme is described in further detail with reference to the accompanying drawings and examples.

As shown in Fig. 1~7, the uncoiling or coiling machine centering control system, it includes emitter circuit, reception deviceCircuit, signal processing circuit and driving circuit of servo valve, emitter circuit output transmission signal to reception device circuit signalThe signal output received is arranged and is fed back to signal and watched by input, reception device circuit into signal processing circuitTake valve-driving circuit；The driving circuit of servo valve includes operational amplifier IC14, operational amplifier IC15, operational amplifierIC16, servo valve control switch S1, triode Q4 and triode Q5, move to left signal L, move to right signal R respectively by resistance R52 andR53 connects operational amplifier IC15 reverse input end（2 pin）, reverse input end also connects slide-wire rheostat W9's by resistance R51Centre tap, slide-wire rheostat W9 mono- terminate-VCC1（-15V）, the other end ground connection, operational amplifier IC15 negative power end（4Pin）Connect-VCC1, positive power source terminal（7 pin）Meet power supply VCC1（+15V）, in-phase input end（3 pin）Ground connection, inverting input（2 pin）With output end（6 pin）Between be connected to resistance R58；Output end of the signal processing circuit through operational amplifier IC10（6 pin）It is defeatedThe drive signal CTRL gone out respectively by resistance R54, resistance R57 connect operational amplifier IC14, operational amplifier IC15 it is anti-phaseInput（2 pin）, operational amplifier IC14 negative power end（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect power supply VCC1, same to phaseInput（3 pin）Ground connection, inverting input（2 pin）With output end（6 pin）Between be connected to resistance R55, output end（6 pin）Pass through electricityResistance R56 connects operational amplifier IC15 inverting input（2 pin）；Operational amplifier IC15 output end（6 pin）Pass through resistance R59Connect operational amplifier IC16 inverting input（2 pin）, operational amplifier IC16 negative power end（4 pin）Connect-VCC1, positive supplyEnd（7 pin）Connect power supply VCC1, in-phase input end（3 pin）It is grounded by resistance R64, inverting input（2 pin）With output end（6 pin）Between be connected to parallel connection electric capacity C10, servo valve control switch S1, servo valve control switch S1 input contact sets be connected toResistance R60, resistance R61, resistance R62, resistance R63；Operational amplifier IC16 output end（6 pin）Pass through resistance R65, electricity respectivelyResistance R67 is connected to triode Q4, triode Q5 base stage, and triode Q4 colelctor electrode meets VCC1, is connected between base stage and colelctor electrodeResistance R66, triode Q5 colelctor electrode meet-VCC1, and resistance R68, triode Q4, triode Q5 are connected between base stage and colelctor electrodeEmitter stage meet CTRLV+, CTRLV- passes through resistance R69 in parallel and resistance R70 ground connection.

Above-mentioned emitter circuit is made up of oscillating circuit and transmission signal circuit, oscillating circuit include multivibrator IC1,First operational amplifier IC2 and the second operational amplifier IC3, multivibrator IC1 reset terminal（4 pin）, voltage input end（8Pin）Meet power supply VCC1（+15V）And it is connected with slide-wire rheostat W1 one end and centre tap, the slide-wire rheostat W1 other endConnecting resistance R1, and connect multivibrator IC1's by the resistance R1 of series connection, resistance R2, slide-wire rheostat 2 and backward dioded D2Threshold end（6 pin）, multivibrator IC1 triggering input（2 pin）With threshold end（6 pin）It is connected and is connect by electric capacity C1Ground, control terminal（5 pin）It is grounded by electric capacity C2, discharge end（7 pin）Connecting resistance R1 and resistance R2 common port simultaneously pass through diodeD1 connects multivibrator IC1 threshold end（6 pin）, output end（3 pin）Slide-wire rheostat W3 and slide-wire rheostat W4 one end are connect,Slide-wire rheostat W3, slide-wire rheostat W4 other end ground connection；Slide-wire rheostat W3, slide-wire rheostat W4 centre tap differenceOperational amplifier IC2, operational amplifier IC3 in-phase input end are connect by resistance R3 and resistance R7（3 pin）, operational amplifierIC2 negative power end（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect VCC1, inverting input（2 pin）With output end（6 pin）ItBetween be connected to resistance R4；Operational amplifier IC2 output end（6 pin）It is connected by resistance R5 with triode Q1 base stage, triodeQ1 colelctor electrode meets power supply VCC1（+15V）, emitter stage connects base stage and by light emitting diode D4, resistance R6 by diode D3Ground connection；Operational amplifier IC3 negative power end（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect VCC1, inverting input（2 pin）With output end（6 pin）Between be connected to resistance R8, operational amplifier IC3 output end（6 pin）Pass through resistance R9's and triode Q2Base stage is connected, and triode Q2 colelctor electrode meets power supply VCC1, and emitter stage connects base stage by diode D5 and passes through light emitting diodeD6 and resistance R10 ground connection；Triode Q1, triode Q2 emitter stage are connected with transmission signal circuit.

In above-mentioned emitter circuit, its transmission signal circuit includes the binding post J1 being connected and two groups luminous twoLevel pipe group, every group of Light-Emitting Diode group are made up of multiple Light-Emitting Diodes in parallel, the signal of triode Q1 emitter stage outputFS1 is grounded by first group of Light-Emitting Diode in parallel, and the signal FS2 of triode Q2 emitter stage output passes through multigroup in parallelLight-Emitting Diode is grounded, and each Light-Emitting Diode is serially connected with current-limiting resistance.

Above-mentioned reception device circuit, it includes three terminal regulator IC4, infrared receiving tube Q3 and operational amplifier IC5, and threeHold voltage-stablizer IC4 voltage input end（1 pin）Meet power supply VCC1（+15V）, common ground end（2 pin）Ground connection, voltage output end（3Pin）Connect infrared receiving tube Q3 colelctor electrode and be grounded by electric capacity C3, infrared receiving tube Q3 emitter stage is grounded by resistance R27And operational amplifier IC5 inverting input is connect by resistance R28 and electric capacity C5（2 pin）, resistance R28 and electric capacity C5 common portPass through electric capacity C4 and operational amplifier IC5 output end（6 pin）It is connected and is grounded by resistance R29 and resistance R30, operation amplifierDevice IC5 inverting input（2 pin）With output end（6 pin）Between be connected to resistance R31, negative power end（4 pin）Meet-VCC1（-15V）, positive power source terminal（7 pin）Connect power supply VCC1, in-phase input end（3 pin）It is grounded by resistance R32；Operational amplifier IC5's is defeatedGo out end（6 pin）Pass through resistance R33 and operational amplifier IC6 inverting input（2 pin）It is connected, operational amplifier IC6 negative electricitySource（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect power supply VCC1, in-phase input end（3 pin）Ground connection, inverting input（2 pin）With output end（6 pin）Between be connected to resistance R34, inverting input（2 pin）Diode D25 and resistance are connected to by diode D24R36 common port, operational amplifier IC7 inverting input is connected to by resistance R36, the electric capacity C6 of parallel connection（2 pin）, output end（6 pin）Pass through diode D25, resistance R36 and operational amplifier IC7 inverting input（2 pin）It is connected；Operational amplifier IC7Negative power end（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect power supply VCC1, in-phase input end（3 pin）Connect by resistance R38Ground, inverting input（2 pin）With output end（6 pin）Between be connected to parallel connection resistance R37 and electric capacity C7, output end（6 pin）Pass throughResistance R39 and operational amplifier IC8 inverting input（2 pin）It is connected；Operational amplifier IC8 negative power end（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect power supply VCC1, in-phase input end（3 pin）It is grounded by resistance R41, inverting input（2 pin）WithOutput end（6 pin）Between be connected to parallel connection resistance R40, electric capacity C8, output end（6 pin）Computing with the signal processing circuit is putBig device IC9 connections.

Above-mentioned signal processing circuit, it include operational amplifier IC9, operational amplifier IC10, operational amplifier IC11,Operational amplifier IC12, operational amplifier IC13, operational amplifier IC9 inverting input（2 pin）Cunning is connected to by resistance R41Line rheostat W5 centre tap, slide-wire rheostat W5 both ends meet positive and negative power supply VCC1 respectively（+15V）、-VCC1（-15V）, fortuneCalculate amplifier IC9 negative power end（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect power supply VCC1, in-phase input end（3 pin）ConnectGround, inverting input（2 pin）With output end（6 pin）Between be connected to resistance R43, output end（6 pin）It is connected to slide-wire rheostat W6 mono-End, slide-wire rheostat W6 other ends ground connection, centre tap are connected to operational amplifier IC10 inverting input by resistance R44（2Pin）；Operational amplifier IC10 negative power end（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect power supply VCC1, in-phase input end（3Pin）Ground connection, inverting input（2 pin）With output end（6 pin）Between be connected to parallel connection resistance R45 and electric capacity C9, output end（6 pin）Pass through resistance R46 and operational amplifier IC11 inverting input（2 pin）It is connected；Operational amplifier IC11 negative power end（4Pin）Connect-VCC1, positive power source terminal（7 pin）Connect power supply VCC1, in-phase input end（3 pin）Ground connection, inverting input（2 pin）With outputEnd（6 pin）Between be connected to the resistance R47 and slide-wire rheostat W7 of series connection, output end（6 pin）Pass through resistance R48 and operational amplifierIC12 inverting input（2 pin）It is connected；Operational amplifier IC12 negative power end（4 pin）Connect-VCC1, positive power source terminal（7 pin）Connect power supply VCC1, in-phase input end（3 pin）Ground connection, inverting input（2 pin）With output end（6 pin）Between be connected to resistance R49, it is defeatedGo out end（6 pin）With lever indicator IC13 signal input part（5 pin）Connection；Lever indicator IC13 positive power source terminal（3 pin）、Pattern sets end（9 pin）Connect power supply VCC2（+5V）, earth terminal（2 pin）, luminous tube minimum brightness setting end（4 pin）Ground connection, hairLight pipe maximum brightness sets end（6 pin）, reference voltage output end（7 pin）It is connected by resistance R50 with slide-wire rheostat W8 one end,The slide-wire rheostat W8 other ends are grounded, the reference voltage setting end of centre tap and lever indicator IC13（8 pin）Connection, levelDisplay IC13 luminous tube negative pole end（Pin 1, pin 10~18）Power supply is connected to by light emitting diode D26~D33 respectivelyVCC2。

In the circuit of the present invention, VCC1 is+15V, and-VCC1 is -15V, and VCC2 is+5V ,+15V used, -15V and 0VPower supply is supplied by external power source module, and+5V power supplys are obtained by voltage-stabilized power supply.

In the present invention, multivibrator IC1 model NE555, operational amplifier IC2, operational amplifier IC3, computing are putBig device IC5, operational amplifier IC6, operational amplifier IC7, operational amplifier IC8, operational amplifier IC9, operational amplifierIC10, operational amplifier IC11, operational amplifier IC12, operational amplifier IC14, operational amplifier IC15, operational amplifierIC16 models are OP07, three terminal regulator IC4 models 7805, infrared receiving tube Q3 model pt333-3b, and level is shownDevice IC13 models LM3914；Triode Q1, triode Q2, infrared receiving tube Q3, triode Q4 are NPN type, and triode Q5 isPositive-negative-positive.

The present invention adjusts the slip variable resistance in the oscillating circuit of emitter circuit first using preceding needing to be debuggedDevice W3 and slide-wire rheostat W4, measurement output point FS1 and FS2 voltage, makes it export 6V or so, 1KHz square-wave signal；FS1 and FS2 voltage signal access transmission signal circuit.Infrared receiving tube Q3 in reception device circuit receives next spontaneousThe invisible infrared light of injection device circuit, the voltage signal of JUN points is measured, is sine wave, when expelling plate is unobstructed, measurement letterNumber value is 6.8V；When expelling plate blocks half, measurement signal value 3.2V.The SIG signals measured in reception device circuit are bigIt is small, about 6V or so.Slide-wire rheostat W5 in Regulate signal process circuit so that its output voltage is 0V, when SIG signals aboutFor 6V when, adjust slide-wire rheostat W6 so that CTRL signal 10V.By adjusting slide-wire rheostat W7 and slide-wire rheostat W8,During so that control signal CTRL value being 10V, red light emitting diodes D26~D33 all lights of output, when CTRL value is 5V,Red light emitting diodes go out four lamps.Slide-wire rheostat W9 is adjusted in driving circuit of servo valve so that input voltage is -5V,When control signal CTRL is 10V, the resistance in hundreds of Europe, measurement resistance both ends electricity are sealed between CTRLV+ and CTRLV-Pressure value, voltage 12.5V, debugging finish.

After having debugged, it is powered, by observing the bright light situation of light emitting diode it is known that band blocks light source feelingsCondition, and the servo valve resistance value of driving is known to, it can calculate and not block（That is 8 light emitting diode all lights, CTRL 10V）When pass through the electric current of servo valve（Magnitude of voltage divided by servo valve resistance value between CTRLV+ and CTRLV-）.

When 8 light emitting diode all lights, CTRL 10V, because reference voltage is -5V, pass through two-stage inverting amplifierAfterwards, output voltage is just, servo valve electric current is just；When 8 light emitting diodes go out entirely, CTRL 0V, reference voltage is -5V,After two-stage phase inverter and amplifier, output voltage is negative, and servo valve electric current is negative, and thus, reversal drives servo valveDrive uncoiling or coiling machine to move left and right, finally realize centering or correction.

Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present inventionThe limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are notNeed to pay various modifications or deformation that creative work can make still within protection scope of the present invention.

Claims (5)

1. a kind of uncoiling or coiling machine centering control system, it is characterized in that：It includes emitter circuit, reception device electricityRoad, signal processing circuit and driving circuit of servo valve, the driving circuit of servo valve include operational amplifier IC14, operation amplifierDevice IC15, operational amplifier IC16, servo valve control switch S1, triode Q4 and triode Q5, move to left signal L, move to right signal ROperational amplifier IC15 reverse input end is connect by resistance R52 and R53 respectively, reverse input end also connects cunning by resistance R51Line rheostat W9 centre tap, slide-wire rheostat W9 mono- terminate-VCC1, other end ground connection, operational amplifier IC15 same phaseInput end grounding, resistance R58 is connected between inverting input and output end；The drive signal of the signal processing circuit outputCTRL connects operational amplifier IC14 inverting input by resistance R54, and operational amplifier IC14 in-phase input end is grounded, insteadResistance R55 is connected between phase input and output end, output end connects operational amplifier IC15 anti-phase input by resistance R56End；Operational amplifier IC15 output end connects operational amplifier IC16 inverting input, operational amplifier by resistance R59IC16 in-phase input end is grounded by resistance R64, and electric capacity C10 in parallel, servo are connected between inverting input and output endValve controlling switch S1, servo valve control switch S1 input contact sets are connected to resistance R60, resistance R61, resistance R62, electricityHinder R63；Operational amplifier IC16 output end is connected to triode Q4, triode Q5 base by resistance R65, resistance R67 respectivelyPole, triode Q4 colelctor electrode meet VCC1, are connected to resistance R66 between base stage and colelctor electrode, and triode Q5 colelctor electrode connects-VCC1, resistance R68 is connected between base stage and colelctor electrode, triode Q4, triode Q5 emitter stage meet CTRLV+, and CTRLV- passes throughResistance R69 in parallel and resistance R70 ground connection.

2. uncoiling according to claim 1 or coiling machine centering control system, it is characterized in that：Its emitter circuit byOscillating circuit and transmission signal circuit composition, oscillating circuit include multivibrator IC1, the first operational amplifier IC2 and secondOperational amplifier IC3, multivibrator IC1 control source termination power supply VCC1 and with slide-wire rheostat W1 one end and centreTap connects, slide-wire rheostat W1 another terminating resistor R1, and passes through the resistance R1 of series connection, resistance R2, the and of slide-wire rheostat 2Backward dioded D2 connects multivibrator IC1 threshold end, and multivibrator IC1 triggering input is connected simultaneously with threshold endIt is grounded by electric capacity C1, control terminal is grounded by electric capacity C2, and the common port for the terminating resistor R1 and resistance R2 that discharges simultaneously passes through two polesPipe D1 connects multivibrator IC1 threshold end, output termination slide-wire rheostat W3 and slide-wire rheostat W4 one end, slip variable resistanceDevice W3, slide-wire rheostat W4 other end ground connection；Slide-wire rheostat W3, slide-wire rheostat W4 centre tap pass through resistance respectivelyR3 and resistance R7 connects operational amplifier IC2, operational amplifier IC3 in-phase input end, and inverting input is indirectly with output endThere is resistance R4；Operational amplifier IC2 output end is connected by resistance R5 with triode Q1 base stage, triode Q1 colelctor electrodePower supply VCC1 is met, emitter stage connects base stage by diode D3 and is grounded by light emitting diode D4, resistance R6；Operational amplifierResistance R8 is connected between IC3 inverting input and output end, operational amplifier IC3 output end passes through resistance R9 and triodeQ2 base stage is connected, and triode Q2 colelctor electrode meets power supply VCC1, and emitter stage connects base stage and by luminous two by diode D5Pole pipe D6 and resistance R10 ground connection；Triode Q1, triode Q2 emitter stage are connected with transmission signal circuit.

3. uncoiling according to claim 2 or coiling machine centering control system, it is characterized in that：In its emitter circuitTransmission signal circuit include the binding post J1 that is connected and two groups of Light-Emitting Diode groups, every group of Light-Emitting Diode group is by multipleLight-Emitting Diode composition in parallel, the signal FS1 of triode Q1 emitter stage output pass through first group of Light-Emitting Diode in parallelGround connection, the signal FS2 of triode Q2 emitter stage output are grounded by multigroup Light-Emitting Diode in parallel, each Light-Emitting DiodeIt is serially connected with current-limiting resistance.

4. uncoiling according to claim 1 or coiling machine centering control system, it is characterized in that：Its reception device circuit bagInclude three terminal regulator IC4, infrared receiving tube Q3 and operational amplifier IC5, three terminal regulator IC4 control source termination power supplyVCC1, common ground end ground connection, voltage output termination infrared receiving tube Q3 colelctor electrode are simultaneously grounded, infrared receiver by electric capacity C3Pipe Q3 emitter stage is grounded by resistance R27 and operational amplifier IC5 inverting input is connect by resistance R28 and electric capacity C5,Resistance R28 and electric capacity C5 common port are connected with operational amplifier IC5 output end by electric capacity C4 and by resistance R29 and electricityR30 ground connection is hindered, is connected to resistance R31 between operational amplifier IC5 inverting input and output end, in-phase input end passes through resistanceR32 is grounded；Operational amplifier IC5 output end is connected by resistance R33 with operational amplifier IC6 inverting input, computingAmplifier IC6 in-phase input end ground connection, is connected to resistance R34, inverting input passes through two between inverting input and output endPole pipe D24 is connected to diode D25 and resistance R36 common port, is connected to operational amplifier by resistance R36, the electric capacity C6 of parallel connectionIC7 inverting input, output end are connected by diode D25, resistance R36 with operational amplifier IC7 inverting input；FortuneThe in-phase input end for calculating amplifier IC7 is grounded by resistance R38, and resistance in parallel is connected between inverting input and output endR37 and electric capacity C7, output end are connected by resistance R39 with operational amplifier IC8 inverting input；Operational amplifier IC8'sIn-phase input end is grounded by resistance R41, and resistance R40 in parallel, electric capacity C8 are connected between inverting input and output end, outputEnd is connected with the signal processing circuit.

5. uncoiling according to claim 1 or coiling machine centering control system, it is characterized in that：Its signal processing circuit bagOperational amplifier IC9, operational amplifier IC10, operational amplifier IC11, operational amplifier IC12, operational amplifier IC13 are included,Operational amplifier IC9 inverting input is connected to slide-wire rheostat W5 centre tap, slide-wire rheostat W5 two by resistance R41End connects positive and negative power supply respectively, in-phase input end ground connection, resistance R43 is connected between inverting input and output end, output is connected toSlide-wire rheostat W6 one end, slide-wire rheostat W6 other ends ground connection, centre tap are connected to operational amplifier IC10 by resistance R44Inverting input；Operational amplifier IC10 in-phase input end ground connection, is connected in parallel between inverting input and output endResistance R45 and electric capacity C9, output end are connected by resistance R46 with operational amplifier IC11 inverting input；Operational amplifierIC11 in-phase input end ground connection, is connected to the resistance R47 to connect and slide-wire rheostat W7 between inverting input and output end, defeatedGo out end by resistance R48 with operational amplifier IC12 inverting input to be connected；Operational amplifier IC12 homophase input terminationGround, is connected to resistance R49 between inverting input and output end, output end is connected with lever indicator IC13 signal input part；Lever indicator IC13 luminous tube maximum brightness setting end, reference voltage output end pass through resistance R50 and slide-wire rheostat W8One end is connected, slide-wire rheostat W8 other ends ground connection, and centre tap is connected with lever indicator IC13 reference voltage setting end,Lever indicator IC13 luminous tube negative pole end is connected to power supply VCC2 by light emitting diode D26~D33 respectively.