CN105048923B - A kind of slip electric motor automatic speed regulation control device - Google Patents
A kind of slip electric motor automatic speed regulation control device Download PDFInfo
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- CN105048923B CN105048923B CN201510534298.9A CN201510534298A CN105048923B CN 105048923 B CN105048923 B CN 105048923B CN 201510534298 A CN201510534298 A CN 201510534298A CN 105048923 B CN105048923 B CN 105048923B
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Abstract
The present invention relates to a kind of slip electric motor automatic speed regulation control device, including：Phase-shift trigger circuit, compare amplifying circuit, speed governing given voltage generation circuit, speed feedback circuit and controlled rectification circuit, the input of amplifying circuit is compared in the output end connection of speed governing given voltage generation circuit and speed feedback circuit, the output end for comparing amplifying circuit connects the input of phase-shift trigger circuit, IGCT in the output end control connection controlled rectification circuit of phase-shift trigger circuit, controlled rectification circuit is serially connected on the current supply circuit of magnet exciting coil.Operational amplifier stability in use is higher, using operational amplifier circuit performance can be made stable, safe and reliable.Also, operational amplifier less expensive.In addition, using 555 multivibrators in phase-shift trigger circuit, the frequency of oscillation and stronger power output capacity of degree of precision can be obtained, the conducting of IGCT can be effectively controlled, facilitate the high-precision control of electric machine speed regulation.
Description
Technical field
The present invention relates to a kind of slip electric motor automatic speed regulation control device, belong to motor automatic speed regulation control field.
Background technology
It is as shown in Figure 1 the fast electric operation control circuit figure of existing slip electric motor, including following part：The main electricity of motor
Road, given voltage circuit, compare amplifying circuit and phase-shift trigger circuit etc., part therein is largely by discrete component
Constitute, wherein, mainly use semiconductor devices：Such as transistor triode, triggering device is unijunction transistor.Semiconductor
Devices have some intrinsic characteristics in itself, and due to these inherent characteristics, semiconductor devices is highly susceptible to around work
The influence of environment, the change of ambient environmental conditions can cause the unstable of semiconductor devices operating point, and in semiconductor devices
During apolegamy, if not carrying out conscientious screening determination to the relevant parameter of semiconductor devices, semiconductor devices work will also result in
Make the unstable of point, and then influence whether the precision of slip electric motor speed governing and the stability of output.Just because traditional device due to
Parameter, the performance of device in itself can influence the stabilization of circuit；And element is more, complex circuit, maintenance difficult, while in circuit
Functionally also exist defective, not only add cost of labor, and the fault rate of speed regulator is also more, especially phase-shifting trigger
Semiconductor devices in circuit directly influences whether the speed governing or operating of motor, can made to drive apparatus when breaking down
Into infringement, certain economic loss is brought to enterprise.
The content of the invention
It is an object of the invention to provide a kind of slip electric motor automatic speed regulation control device, to solve in phase-shift trigger circuit
Semiconductor devices stability it is poor the problem of.
To achieve the above object, the solution of the present invention includes a kind of slip electric motor automatic speed regulation control device, including：Phase shift
Triggers circuit, compare amplifying circuit, speed governing given voltage generation circuit, speed feedback circuit and controlled rectification circuit, speed governing is given
The output end for determining voltage generation circuit and speed feedback circuit connects the input for comparing amplifying circuit, compares the defeated of amplifying circuit
The brilliant lock gone out in the input of end connection phase-shift trigger circuit, the output end control connection controlled rectification circuit of phase-shift trigger circuit
Pipe, controlled rectification circuit is serially connected on the current supply circuit of magnet exciting coil.
The phase-shift trigger circuit includes sawtooth waveforms generation module, the operational amplifier Q2 for being used to produce sawtooth waveforms：A, fortune
Calculate amplifier Q1：D, operational amplifier Q2：D and 555 multivibrators, the sawtooth waveforms generation module include operational amplifier
Q2：B, the output end of the sawtooth waveforms generation module and the output end concatenation operation amplifier Q1 for being compared amplifying circuit：D input
End, operational amplifier Q1：D output end connects the signal input part of 555 multivibrators, the letter of 555 multivibrator
IGCT in number output end control connection controlled rectification circuit, the operational amplifier Q2：A homophase input termination
Ground, the operational amplifier Q2：A inverting input connects alternating current all the way, and another road is grounded by voltage-stabiliser tube WD2, described
Operational amplifier Q2：A output end concatenation operation amplifier Q2：B inverting input, operational amplifier Q2：B anti-phase input
End passes through electric capacity C9 concatenation operation amplifiers Q2：B output end, operational amplifier Q2：B in-phase input end ground connection, computing is put
Big device Q2：B output end is the output end of the sawtooth waveforms generation module, the operational amplifier Q2：D inverting input connects
Meet the operational amplifier Q2：A inverting input, the operational amplifier Q2：D in-phase input end connects the computing and put
Big device Q2：A in-phase input end, the operational amplifier Q2：The signal that D output end connects 555 multivibrator is defeated
Enter end, the operational amplifier Q2：Connection line between the signal input part of D output end and 555 multivibrator
On be reversely serially connected with diode D8.
The operational amplifier Q1：On connection line between the signal input part of D output end and 555 multivibrators
Reversely it is serially connected with diode D7.
The signal output part connection transformer T2 of 555 multivibrator side, transformer T2 opposite side control
Connect the IGCT.
The diode D13 for partial pressure is also serially connected with the current supply circuit of the magnet exciting coil.
The speed governing given voltage generation circuit includes rheostat, operational amplifier Q1：A and operational amplifier Q1：B, institute
State rheostatic adjustable side concatenation operation amplifier Q1：A in-phase input end, operational amplifier Q1：A anti-phase input termination
Ground, operational amplifier Q1：A output end is grounded by resistance R3 all the way, and another road passes through resistance R4 concatenation operation amplifiers Q1：
B inverting input, operational amplifier Q1：B in-phase input end connects electric capacity C3 all the way, and another road is grounded by resistance R5,
Operational amplifier Q1：B output end passes through electric capacity C4 concatenation operation amplifiers Q1：B inverting input, operational amplifier Q1：B
Output end pass through resistance R6 concatenation operation amplifiers Q1：A in-phase input end, operational amplifier Q1：B output end is described
The output end of speed governing given voltage generation circuit.
The amplifying circuit that compares includes operational amplifier Q1：C, the output end of the speed governing given voltage generation circuit connects
Meet the operational amplifier Q1：C inverting input, the output end of the speed feedback circuit connects the operational amplifier
Q1：C inverting input, the operational amplifier Q1：C in-phase input end ground connection, the operational amplifier Q1：C output
The series circuit concatenation operation amplifier Q1 that end passes through resistance R11 and electric capacity C8：C inverting input, the resistance R11 and electricity
The series circuit for holding C8 is in parallel with voltage-stabiliser tube WD3, and the tie point of the resistance R11 and electric capacity C8 are grounded by resistance R12.
The automatic speed regulation control device also includes pulse signal display circuit, and the signal of 555 multivibrator is defeated
Go out the input of the end connection pulse signal display circuit；The pulse signal display circuit includes operational amplifier Q2：C,
The signal output part of 555 multivibrator connects the operational amplifier Q2：C inverting input, the operation amplifier
Device Q2：C in-phase input end ground connection, the operational amplifier Q2：C inverting input is amplified by resistance R18 concatenation operations
Device Q2：C output end, the resistance R18 is in parallel with electric capacity C13, the operational amplifier Q2：C output head grounding, the fortune
Calculate amplifier Q2：Reversely a light emitting diode is concatenated on connection line between C output end and ground.
The automatic speed regulation control device also includes a rotating speed display device, and the output end of the speed feedback circuit connects
Connect the rotating speed display device.
First, the main control portion in the slip electric motor automatic speed regulation control device that the present invention is provided uses operation amplifier
Device is as the unit of signal transacting, and operational amplifier is integrated circuit, and an operational amplifier can just include multiple components,
So, the cumbersome degree of the connection of complexity and circuit that can reduce circuit using operational amplifier makes circuit integration high, accordingly
Ground, maintenance and replacing also just more facilitate and simple.
Moreover, operational amplifier stability in use is higher, be not in because work relative to semiconductor components and devices
The problem of unstable caused control and output error of point, so, using operational amplifier circuit performance can be made stable, peace
It is complete reliable.Also, operational amplifier less expensive, excessive cost input is not had in use.
In addition, using 555 multivibrators in phase-shift trigger circuit, can be equipped with a small amount of element can obtain higher
The frequency of oscillation of precision and stronger power output capacity, and then, the conducting of IGCT can be effectively controlled, facilitates electric machine speed regulation
High-precision control.
Brief description of the drawings
Fig. 1 is the fast electric operation control circuit figure of existing slip electric motor；
Fig. 2 is the control principle flow chart of automatic speed regulation control device；
Fig. 3 is the overall flow figure of automatic speed regulation control device；
Fig. 4 is the main circuit diagram of motor；
Fig. 5 is the phase-shift trigger circuit and alignment circuit figure in automatic speed regulation control device；
Fig. 6 is controlling power circuit figure；
Fig. 7 is speed feedback circuit diagram；
Fig. 8 is speed governing given voltage generation circuit figure；
Fig. 9 is to compare amplification circuit diagram；
Figure 10 is pulse signal display circuit figure；
Figure 11 is the oscillogram of 555 multivibrators；
Figure 12 is the oscillogram of several specified points.
Embodiment
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Automatic speed regulation control device as shown in Figure 2 includes：Phase-shift trigger circuit, compare amplifying circuit, the given electricity of speed governing
Press generation circuit, speed feedback circuit and controlled rectification circuit, speed governing given voltage generation circuit and speed feedback circuit it is defeated
Go out the input that amplifying circuit is compared in end connection, the output end for comparing amplifying circuit connects the input of phase-shift trigger circuit, moves
IGCT in the output end control connection controlled rectification circuit of phase triggers circuit, controlled rectification circuit is serially connected in magnet exciting coil
On current supply circuit.
As shown in figure 3, the voltage signal and the voltage of speed measure feedback circuit output of the output of speed governing given voltage generation circuit
Signal averaging, is conveyed to the input for comparing amplifying circuit, and control voltage signal is formed through comparing after amplifying circuit is amplified,
Compare again with synchronous sawtooth voltage signal, amplify after formed phase-shifting trigger pulse, trigger controllable silicon conducting because controllable silicon
The magnet exciting coil of controlled motor obtains electric or dead electricity, so, motor is realized by the conducting of phase-shifting trigger Pulse Width Control controllable silicon
Speed governing.
As shown in figure 4, being the power supply circuit of motor.Close total power switch QF1 and connect three-phase AC 380V alternating currents,
Start button SS1 is pressed, contactor KM1 control coil obtains electric, contactor KM1 normally opened contact adhesive, and contactor
Normally opened contact KM1 self-lockings, slip electric motor prime mover M1 is in operating condition, when only pressing stop button SS2, contactor KM1
Control coil dead electricity, slip electric motor prime mover M1 shuts down；In contactor KM1 adhesives, contactor KM1 another road is auxiliary
Normally opened contact is helped to connect, the control coil for turning round lower toggle switch SS3, contactor KA1 obtains electric, and contactor KA1 normally opened contact is inhaled
Close, electricity on alignment circuit.
As shown in figure 5, alignment circuit includes the unidirectional controllable silicon S CR1's (BT151) and slip electric motor prime mover M1 of series connection
Normally opened contact KA1 and N line in magnet exciting coil, the two ends difference connection figure 4 of alignment circuit.Contactor KA1 normally opened contact is inhaled
After conjunction, AC 220V alternating currents are connected at alignment circuit two ends, by being carried out to unidirectional controllable silicon S CR1 after controlled halfwave rectifier,
By in the magnet exciting coil in 0V~90V DC voltage input slip clutch, speed regulating control is realized with this.
Because magnetizing coil is an inductive load, it is easy to produce counter electromotive force, in order to make electric current smooth, therefore swashing
A magnetic coil KA1 two ends sustained diode 14 in parallel；If the positive counter electromotive force of Ua is added to 1 pipe of controllable silicon SCR, and it is electric
Pressure is very high, if not having diode D13, all voltage is all added on the pipe of controllable silicon SCR 1 by this, is easily punctured, if increase
Diode D13, the pressure-resistant hypothesis of it and the pipe of controllable silicon SCR 1 is all in 800V, and because they are series relationships, they altogether can
1600V voltage is born, like this, SCR1 pipes are hardly damaged；YMDZ is piezo-resistance, for absorbing power network surge electricity
Pressure, when there is abnormal peak voltage in power network, YMDZ punctures in time makees overvoltage protection, while adding cartridge fuse FUSE1 conducts
Overcurrent protection, further functions as the effect of protection circuit.
Controlling power circuit figure is illustrated in figure 6, the control power supply is used to provide necessary operating voltage for control circuit.
AC 220V alternating currents in Fig. 4 are after contactor KA1 adhesives, and the transformer T1 given in Fig. 6 is depressured, T1 level TB of transformer,
The double 18V alternating currents of TA ends output, on the one hand as the synchronizing voltage of triggers circuit；On the other hand direct current is exported after rectified filtering
Electricity, the output+15V voltages after LA7815 voltage stabilizings are used as the positive supply of control circuit；Output -15V the electricity after LA7915 voltage stabilizings
Pressure, is used as the negative supply of control circuit；Power supply ± 15V is controlled to use R1, HL1 composition control power supply instruction circuit for lamp.
Three-phase alternating current tachometer generator M2 is coaxially connected with ac motor M1, and tachometer generator M2 effect is to exchange
Motor M1 mechanical separator speed is converted to three-phase alternating voltage corresponding with speed.As shown in fig. 7, three-phase alternating current tachometer generator
M2 output end is via D1~D6 three-phase bridge rectifier circuit rectifications constituted and the flat feedback direct current of electric capacity C5 filtering outputs
Signal voltage, this feedback voltage signal is exported by resistance R8 and potentiometer DW partial pressures at potentiometer DW centre cap
The voltage signal that voltage signal is exported after being filtered again through electric capacity C6 is the voltage signal of the speed feedback circuit output, by R10
The input for comparing amplifying circuit is conveyed to afterwards.
Automatic speed regulation control device also includes a rotating speed display device, the three-phase bridge rectifier circuit of D1~D6 compositions
Output end connects the input of the rotating speed display device.Digital instrument U3 is 4 LED digital-scroll techniques, can conveniently show motor
Rotating speed.
As shown in figure 8, speed governing given voltage generation circuit includes potentiometer DW0, operational amplifier Q1：A and operation amplifier
Device Q1：B, potentiometer DW0 adjustable side concatenation operation amplifier Q1：A in-phase input end, operational amplifier Q1：A's is anti-phase defeated
Enter end ground connection, operational amplifier Q1：A output end is grounded by resistance R3 all the way, and another road is put by resistance R4 concatenation operations
Big device Q1：B inverting input, operational amplifier Q1：B in-phase input end connects electric capacity C3 all the way, and another road passes through resistance
R5 is grounded, operational amplifier Q1：B output end passes through electric capacity C4 concatenation operation amplifiers Q1：B inverting input, computing is put
Big device Q1：B output end passes through resistance R6 concatenation operation amplifiers Q1：A in-phase input end, operational amplifier Q1：B output
Hold as the output end of the speed governing given voltage generation circuit.
The speed governing given voltage generation circuit is by the Open-loop amplifier Q1 of a not paraphase input：A and paraphase input tape
The integrator Q1 of capacitive feedback:The buffer circuits of B compositions.
+ 15V power supplys can realize regulation voltage Setting signal corresponding with motor speed through R33, R34 and potentiometer DW0
Size；R6 is feedback resistance；C3 can not allow operational amplifier Q1 after electricity is served：B output end has negative output；Computing is put
Big device Q1：B constitutes an integrator, and R4, R5 are input pickup resistance, and C4 capacitors are integrator electric capacity.
The effect of the speed governing given voltage generation circuit is, anyway de-regulation voltage Setting signal, and the circuit all may be used
Step reference signal is transformed to the linear signal changed over time, slip electric motor is not sent out during starting, acceleration and deceleration
Raw impact.
As shown in figure 9, comparing amplifying circuit includes operational amplifier Q1：C, the output end of speed governing given voltage generation circuit
The output end (i.e. the R7 other end) of (i.e. the other end of R10 in Fig. 7) and speed feedback circuit is all connected with operational amplifier Q1：
C inverting input, operational amplifier Q1：C in-phase input end ground connection, operational amplifier Q1：C output end passes through resistance
R11 and electric capacity C8 series circuit concatenation operation amplifier Q1：C inverting input, resistance R11 and electric capacity C8 series circuit
In parallel with voltage-stabiliser tube WD3, resistance R11 and electric capacity C8 tie point are grounded by resistance R12.
Rotating speed control voltage Ug (given voltage) is sent to Q1 through resistance R7 and feedback signal Uf through resistance R10：C's is same mutually defeated
Enter end, exported after being compared and (subtracting each other) from output end.
As shown in figure 5, phase-shift trigger circuit includes sawtooth waveforms generation module, the operational amplifier for being used to produce sawtooth waveforms
Q2：D, operational amplifier Q1：D and 555 multivibrators.Sawtooth waveforms generation module includes operational amplifier Q2：A and operation amplifier
Device Q2：B, operational amplifier Q2：A in-phase input end ground connection, operational amplifier Q2：A inverting input is connected through all the way
R20 is connected to the TA ends in Fig. 6, as the synchronizing voltage of triggers circuit, and another road is grounded by voltage-stabiliser tube WD2；Operation amplifier
Device Q2：A output end concatenation operation amplifier Q2：B inverting input, operational amplifier Q2：B inverting input passes through electricity
Hold C9 concatenation operation amplifiers Q2：B output end, operational amplifier Q2：B in-phase input end ground connection, operational amplifier Q2：B
Output end be sawtooth waveforms generation module output end.Operational amplifier Q2：D inverting input concatenation operation amplifier Q2：A
Inverting input, operational amplifier Q2：D in-phase input end concatenation operation amplifier Q2：A in-phase input end, computing is put
Big device Q2：D output end connects the signal input part of 555 multivibrators, operational amplifier Q2：D output end and 555 multi resonants
Reversely diode D8 is serially connected with connection line between the signal input part of oscillator.
Operational amplifier Q2：B output end concatenation operation amplifier Q1：D inverting input, operational amplifier Q1：C's
Output end concatenation operation amplifier Q1：D in-phase input end, operational amplifier Q1：D output end connects 555 multivibrators
Signal input part, operational amplifier Q1：Connection line between the signal input part of D output end and 555 multivibrators
On be reversely serially connected with diode D7.
The signal output part of 555 multivibrators connects the input of a pulse signal display circuit；As shown in Figure 10,
The pulse signal display circuit includes operational amplifier Q2：C, the signal output part (i.e. more than 555 in Fig. 5 of 555 multivibrators
3 ends of harmonic oscillator) concatenation operation amplifier Q2：C inverting input, operational amplifier Q2：C in-phase input end ground connection；
Operational amplifier Q2：C inverting input passes through resistance R18 concatenation operation amplifiers Q2：C output end, resistance R18 and electric capacity
C13 is in parallel；Operational amplifier Q2：C output head grounding, operational amplifier Q2：On connection line between C output end and ground
Reversely concatenate a light emitting diode.As long as LED just flashes, substantially triggers circuit can be reminded working properly.
555 integrated circuits are that 8 pin are encapsulated, Dual-In-Line type, wherein 6. pin claims threshold value end, it is the input of upper comparator；②
Pin claims triggering end, is the input of lower comparator；3. pin is output end (Vo), and it has O and 1 two states, as added by input
Level is determined；7. pin is discharge end, and it is the output of internal discharge pipe, has hanging and ground connection two states, is also by input
Determines；4. pin is reset terminal, can make to be output as low level when adding low level；5. pin is control voltage end (Vc), can
With triggering level value above and below its change；8. pin is power end, and 1. pin is ground terminal.
555 timing circuits are a kind of ambipolar medium scale integration (MSI)s, appropriate Resistor-Capacitor Unit are mixed in outside, it is possible to structure
Into multivibrator.
Multivibrator is constituted by 555 timers and outward element R15, R16, C11,6. 2. pin be joined directly together with pin, electricity
Road does not have stable state, only exists two temporary stable states, and circuit does not also need external trigger signal, using power supply by R15, R16 to C11
7. charging, and C11 are discharged by R16 to discharge end pin, circuit is produced vibration.
Electric capacity C11 existsWithBetween be charged and discharged, its waveform is as shown in figure 11.The time ginseng of output signal
Number is T=tw1+tw2, and tw1=0.7 (R15+R16) C11, tw2=0.7R16C11,555 circuit requirement R15 and R16 all should be big
In or equal to 1K Ω, but R15+R16 should be less than or equal to 3.3M Ω, and the stability of outer member determines the steady of multivibrator
Qualitative, 555 timers, which are equipped with a small amount of element, can obtain the frequency of oscillation of degree of precision and with stronger power output energy
Power.
The signal output part connection transformer T2 of 555 multivibrators side, transformer T2 opposite side control connection
IGCT SCR1 in controlled rectification circuit.Q4 is formed for trigger pulse, during normal work, pulse transformer T2 primary side winding
In will produce trigger pulse electric current, while can also generate trigger pulse electric current in the vice-side winding of pulse transformer, this
Trigger pulse electric current is flowed into from the gate pole of IGCT just, is flowed out from its negative electrode, at this moment between IGCT anode and negative electrode just
What is applied is that positive voltage turns on so as to trigger IGCT SCR1.Diode D11 shields, and it protects the door of IGCT
Pole only forward current flows through to be flowed through without reverse current, while also prevent the false triggering of IGCT；Controllable silicon SCR 1 is led
It is logical that there is provided excitation voltage.
T1 double 18V alternating currents of level TB, TA end output of transformer, by R20, WD2, Q2：A、D9、R13、Q2：D, D8 are constituted
Sync detection circuit, the cycle synchronisation of alternating current when the pipe of controllable silicon SCR 1 realized with half control is turned on；Electric capacity C9 is charging,
Q2：B output end formation sawtooth voltage, and with amplifier Q1：The control voltage mixing of C output end output, is added to Q1：D's
Input, Q1：D output rectangle square wave, can be seen that, the change of Setting signal by Figure 12 oscillogram, with sawtooth waveforms joining
Position just change, the rectangle square width interval of generation just changes.
And oscillator Q4 work be by 4. foot control system, only 4. pin input high level when, otherwise 555 starting of oscillations stop；
Q1：The connected diode D7 of D output end, which just rises, just to play a decisive role, and because circuit is half control rectification, diode D8 effect is
Block another half cycle, it is ensured that the pipe of controllable silicon SCR 1 is reliably turned on.
Phase-shift trigger circuit is substantially one-level comparison amplifier, amplifier output voltage compared with the voltage of sawtooth waveforms,
Decide Q4 duration of oscillation.
When motor given voltage signal is raised, Q4 frequency of oscillation is set to move forward, can close to the starting point of power network positive half-wave
Control silicon output commutating voltage rise；Conversely, during the reduction of motor given voltage signal, being moved after Q4 Q4 frequency of oscillation, controllable silicon
Output voltage " breach " increases, and the controlled silicon conducting time shortens in positive half-wave.Controllable silicon SCR 1 turn on size, output swash
Coil voltage also follows change, finally realizes the speed governing of slip electric motor.
In above-described embodiment, motor speed is detected using tachometer generator, certainly, the invention is not limited in above-mentioned implementation
Example, as other embodiment, can also use encoder to detect motor speed.
Specific embodiment is presented above, but the present invention is not limited to described embodiment.The base of the present invention
This thinking is above-mentioned basic scheme, for those of ordinary skill in the art, according to the teachings of the present invention, designs various changes
The model of shape, formula, parameter simultaneously need not spend creative work.It is right without departing from the principles and spirit of the present invention
The change, modification, replacement and modification that embodiment is carried out are still fallen within protection scope of the present invention.
Claims (8)
1. a kind of slip electric motor automatic speed regulation control device, it is characterised in that including：Phase-shift trigger circuit, compare amplifying circuit,
Speed governing given voltage generation circuit, speed feedback circuit and controlled rectification circuit, speed governing given voltage generation circuit and rotating speed are anti-
The input of amplifying circuit is compared in the output end connection of current feed circuit, compares the output end connection phase-shift trigger circuit of amplifying circuit
IGCT in input, the output end control connection controlled rectification circuit of phase-shift trigger circuit, controlled rectification circuit is serially connected in
On the current supply circuit of magnet exciting coil；
The phase-shift trigger circuit includes sawtooth waveforms generation module, the operational amplifier Q2 for being used to produce sawtooth waveforms：A, computing are put
Big device Q1：C, operational amplifier Q1：D, operational amplifier Q2：D and 555 multivibrators, the sawtooth waveforms generation module include
Operational amplifier Q2：B, the output end of the sawtooth waveforms generation module and the output end concatenation operation amplifier for being compared amplifying circuit
Q1：D inverting input, the operational amplifier Q1：C output end connects the operational amplifier Q1：D homophase input
End, operational amplifier Q1：D output end connects the signal input part of 555 multivibrators, the letter of 555 multivibrator
IGCT in number output end control connection controlled rectification circuit, the operational amplifier Q2：A homophase input termination
Ground, the operational amplifier Q2：A inverting input connects alternating current all the way, and another road is grounded by voltage-stabiliser tube WD2, described
Operational amplifier Q2：A output end concatenation operation amplifier Q2：B inverting input, operational amplifier Q2：B anti-phase input
End passes through electric capacity C9 concatenation operation amplifiers Q2：B output end, operational amplifier Q2：B in-phase input end ground connection, computing is put
Big device Q2：B output end is the output end of the sawtooth waveforms generation module, the operational amplifier Q2：D inverting input connects
Meet the operational amplifier Q2：A inverting input, the operational amplifier Q2：D in-phase input end connects the computing and put
Big device Q2：A in-phase input end, the operational amplifier Q2：The signal that D output end connects 555 multivibrator is defeated
Enter end, the operational amplifier Q2：Connection line between the signal input part of D output end and 555 multivibrator
On be reversely serially connected with diode D8；
The operational amplifier Q1：C in-phase input end ground connection, the operational amplifier Q1：C output end passes through resistance R11
With electric capacity C8 series circuit concatenation operation amplifier Q1：C inverting input, the tie point of the resistance R11 and electric capacity C8
It is grounded by resistance R12.
2. slip electric motor automatic speed regulation control device according to claim 1, it is characterised in that the operational amplifier
Q1：Reversely diode D7 is serially connected with connection line between the signal input part of D output end and 555 multivibrators.
3. slip electric motor automatic speed regulation control device according to claim 1, it is characterised in that 555 multi-harmonic-oscillations
The signal output part connection transformer T2 of device side, the transformer T2 opposite side control connection IGCT.
4. slip electric motor automatic speed regulation control device according to claim 1, it is characterised in that the confession of the magnet exciting coil
The diode D13 for partial pressure is also serially connected with electrical circuit.
5. slip electric motor automatic speed regulation control device according to claim 1, it is characterised in that the speed governing given voltage
Generation circuit includes rheostat, operational amplifier Q1：A and operational amplifier Q1：B, the rheostatic adjustable side concatenation operation
Amplifier Q1：A in-phase input end, two other described rheostatic terminal is connected in bleeder circuit, operational amplifier Q1：A
Reverse inter-input-ing ending grounding, operational amplifier Q1：A output end is grounded by resistance R3 all the way, and another road is connected by resistance R4
Meet operational amplifier Q1：B inverting input, operational amplifier Q1：B in-phase input end passes through electric capacity C3 and control electricity all the way
The positive supply on road is connected, and another road is grounded by resistance R5, operational amplifier Q1：B output end is transported by electric capacity C4 connections
Calculate amplifier Q1：B inverting input, operational amplifier Q1：B output end passes through resistance R6 concatenation operation amplifiers Q1：A's
In-phase input end, operational amplifier Q1：B output end is the output end of the speed governing given voltage generation circuit.
6. slip electric motor automatic speed regulation control device according to claim 1, it is characterised in that described to compare amplifying circuit
Including operational amplifier Q1：C, the output end of the speed governing given voltage generation circuit connects the operational amplifier Q1：C's is anti-
Phase input, the output end of the speed feedback circuit connects the operational amplifier Q1：C inverting input, the resistance
R11 and electric capacity C8 series circuit are in parallel with voltage-stabiliser tube WD3.
7. slip electric motor automatic speed regulation control device according to claim 1, it is characterised in that the automatic speed regulation control
Device also includes pulse signal display circuit, and the signal output part of 555 multivibrator connects the pulse signal and shown
The input of circuit；The pulse signal display circuit includes operational amplifier Q2：C, the signal of 555 multivibrator is defeated
Go out the end connection operational amplifier Q2：C inverting input, the operational amplifier Q2：C in-phase input end ground connection, institute
State operational amplifier Q2：C inverting input passes through resistance R18 concatenation operation amplifiers Q2：C output end, the resistance R18
It is in parallel with electric capacity C13, the operational amplifier Q2：C output head grounding, the operational amplifier Q2：C output end and ground
Between connection line on reversely concatenation one light emitting diode.
8. slip electric motor automatic speed regulation control device according to claim 1, it is characterised in that the automatic speed regulation control
Device also includes a rotating speed display device, and the output end of the speed feedback circuit connects the rotating speed display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534298.9A CN105048923B (en) | 2015-08-27 | 2015-08-27 | A kind of slip electric motor automatic speed regulation control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534298.9A CN105048923B (en) | 2015-08-27 | 2015-08-27 | A kind of slip electric motor automatic speed regulation control device |
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| CN105883342B (en) * | 2016-05-19 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of vibrating disk automaton |
| CN105883338B (en) * | 2016-05-19 | 2018-04-06 | 中国石油化工股份有限公司 | A kind of safety-type vibrating disk automaton |
| CN106357169A (en) * | 2016-10-20 | 2017-01-25 | 珠海格力节能环保制冷技术研究中心有限公司 | PWM modulation circuit and direct-current brushless motor controller |
| CN109927585B (en) * | 2019-03-21 | 2022-07-01 | 唐国齐 | Portable automatic charging device for electric vehicle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282081Y (en) * | 1996-02-28 | 1998-05-20 | 邵琨平 | Automatic controller for electromagnetic slip speed regulation |
| CN2591863Y (en) * | 2002-11-19 | 2003-12-10 | 湘潭电气设备制造有限责任公司 | Slip motor speed-regulating electronic automatic controller for rotary drill |
| CN204859056U (en) * | 2015-08-27 | 2015-12-09 | 河南省通信电缆有限公司 | Slippage motor automatic speed adjustment controlling means |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5886891A (en) * | 1981-11-17 | 1983-05-24 | Mitsubishi Electric Corp | Controlling device for induction motor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2282081Y (en) * | 1996-02-28 | 1998-05-20 | 邵琨平 | Automatic controller for electromagnetic slip speed regulation |
| CN2591863Y (en) * | 2002-11-19 | 2003-12-10 | 湘潭电气设备制造有限责任公司 | Slip motor speed-regulating electronic automatic controller for rotary drill |
| CN204859056U (en) * | 2015-08-27 | 2015-12-09 | 河南省通信电缆有限公司 | Slippage motor automatic speed adjustment controlling means |
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