CN105790655A - Low-power DC torque motor speed control device - Google Patents
Low-power DC torque motor speed control device Download PDFInfo
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- CN105790655A CN105790655A CN201410817611.5A CN201410817611A CN105790655A CN 105790655 A CN105790655 A CN 105790655A CN 201410817611 A CN201410817611 A CN 201410817611A CN 105790655 A CN105790655 A CN 105790655A
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Abstract
The invention relates to a low-power DC torque motor speed control device, which comprises a microcontroller circuit, a motor drive circuit, a power amplifying circuit and a power circuit, wherein a microcontroller comprises a single chip microcomputer MCS-8051. According to the low-power DC torque motor speed control device, a PWM wave is generated through the single chip microcomputer; and average values of voltages at two ends of a motor are controlled through the amplifying circuit and the drive circuit to achieve the target of controlling the rotating speed of the motor. The conditions that a power supply voltage is unstable and interference to working of the single chip microcomputer is easily generated due to a relatively high starting current of the motor in the braking process are considered, so that the motor drive circuit and the single chip microcomputer are isolated with photoelectricity; and a DC regulated power supply is directly utilized as the power supply of the single chip microcomputer.
Description
Art
The present invention relates to a kind of torque motor speed-regulating control device, be based especially on the small power DC torque motor speed-regulating control device of single-chip microcomputer.
Background technology
Pulse width modulation results from the mid-1970s.The earliest for irreversible, small-power drives, for instance from motion tracking astronomical telescope, recording instrument etc..Abroad, PWM applies in war industry and space technology.It has superior performance, it is possible to meet the demand of those high speeds, high accuracy servo follow-up tracing system.Over nearly eight, nine years, diffuse further into civilian industry, particularly extensive use in the fields such as machine industry, automatic assembly line and robot.Near during the last ten years, due to the development of the raising of transistor device level and circuit engineering, simultaneously again because occurring in that wide range speed control permanent magnet DC motor, the combination between them promotes the high speed development of PWM technology, and makes electrical driving technique be advanced to a new height.
One chip microcomputer is referred to as single-chip microcomputer, and its generation is a new milestone of development of computer.In recent years, along with the fast development of singlechip technology, function is constantly perfect so that it is extensive use intelligent instrumentation, electromechanical equipment, process control, and data process, automatically the application such as detection and household electrical appliance.
Direct current generator has good linear speed regulation characteristic, simple control performance, higher efficiency due to it, and excellent dynamic property, so for a long time, it is always in occupation of the dominant position of speed regulating control.Although being constantly subject to the challenge of other motor (such as ac variable-frequency electric motor, motor) in recent years, but up to the present, it remains the override of most of governor controlled motor and selects.In recent years, the structure of direct current generator and control method all have a very large change.Along with computer enters control field and the continuous appearance of emerging electric and electronic power components and parts, make the switch power element of employing full-control type carry out pulse width modulation controlled mode and have become as absolute main flow.This control mode is easy in Single-chip Controlling to realize, thus the digitized for DC MOTOR CONTROL provides opportunity.
The design adopts up-to-date, the simplest, the most optimum DC motor control method to utilize single-chip microcomputer and pulse width modulation technique to realize the speed regulating control to direct current generator.
Summary of the invention
It is an object of the invention to design a kind of based on monolithic processor controlled small power DC Moment Motor Controller.The design produces PWM ripple, the speed regulating control after H-bridge drive circuit or motor control chip LMD18200, dc motor carried out by MCS-8051 single-chip microcomputer.
The object of the present invention is achieved like this:
Microcontroller is made up of single-chip microcomputer MCS-8051 single-chip microcomputer；The pwm signal output of single-chip microcomputer is realized by software programming；Motor-drive circuit adopts H-bridge circuit, and control chip is LMD18200, adopts the motor-drive circuit of TIP122, and P1.0 is " 0 ", and during P1.1 mouth input PWM ripple, motor rotates forward, and can regulate the speed of motor by changing the dutycycle of PWM；When P1.1 mouth is " 0 ", during P1.0 mouth input PWM ripple, motor reversal, the speed of motor is regulated again by the dutycycle changing PWM；Photoelectric isolating device is TIL113.
The present invention is made up of microcontroller circuit, motor-drive circuit, power amplification circuit and power circuit.Microcontroller is made up of single-chip microcomputer MCS-8051 single-chip microcomputer, P1.0, P1.1 mouth output pwm signal of single-chip computer control system, interface microcontroller circuit, H-bridge drive circuit, photoelectric isolating device constitute PWM ripple and control direct current torque motor circuit, H the bridge open-loop control system of the bipolar drive of the direct current generator realized.Thus being sent pwm pulse signal by MCS-8051 single-chip microcomputer, by photoelectrical coupler TIL113 and H-bridge circuit, realize motor speed and the control turned to.
The construction features of the present invention and beneficial effect:
1, this invention is for the arrangements for speed regulation of small power DC torque motor, simple in construction, perfect in shape and function, has saved cost.
2, the control method that this invention adopts combine the advantage of the speed regulating method of traditional direct current generator in, there is the feature of good stability, faster response speed, higher control accuracy.
3, adopt the rotating speed of Single-chip Controlling motor, just can be directly realized by the control to motor on computers, easily realize remotely controlling, it is possible to quickly raise labour productivity.
Accompanying drawing explanation
Fig. 1 is the system principle structure chart of the present invention.
Fig. 2 is the driving circuit principle figure of the present invention.
Fig. 3 is the motor-drive circuit schematic diagram of LMD18200 composition.
Fig. 4 is photoelectric isolating circuit schematic diagram.
Fig. 5 is pwm pulse signal product process figure of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, principles of the invention and concrete annexation are described in more detail:
Embodiment 1
In conjunction with the system principle structure chart that Fig. 1, Fig. 1 are the present invention；The present invention includes microcontroller circuit, motor-drive circuit, power amplification circuit and power circuit；The design produces PWM ripple by single-chip microcomputer, then again through amplifying circuit, drive circuit, to control the meansigma methods of motor both end voltage, reaches to control the purpose of motor speed.
Embodiment 2
Fig. 2 is the driving circuit principle figure of the present invention.Drive circuit can easily realize the four quadrant running of direct current generator, and correspondence rotates forward, rotates forward braking, reversion, reverse rotating brake respectively；4 switching tubes of full-bridge type drive circuit are all operated in copped wave state, and S1, S2 are one group, and S3, S4 are another group, and the state of two groups is complementary.One group of conducting then another group must turn off.When S1, S2 turn on, S3, S4 turn off, and motor two ends add forward voltage, it is possible to achieve the forward or reverse braking of motor；When S3, S4 turn on, S1, S2 turn off, and motor two ends are backward voltage, and motor reversal or rotating forward are braked.In motor operation, we often require that motor switches between four quadrants, namely switch between rotating and reverse, and namely turn off in S1, S2 conducting and S3, S4, turn off to S1, S2 and S3, S4 conducting, change between both states.
Embodiment 3
Fig. 3 is the motor-drive circuit schematic diagram of LMD18200 composition；5 feet of LMD18200 are PWM ripple input, and by changing the dutycycle speed with regard to scalable motor of PWM, the low and high level changing 3 feet can control the rotating of motor.
Embodiment 4
Fig. 4 is photoelectric isolating circuit schematic diagram；When pulse is added to the input of TIL113, light emitting diode is luminous because of conducting, and phototriode turns on because of optical coupling, therefore can export high level at outfan, otherwise phototriode cut-off, outfan output low level.
Embodiment 5
Fig. 5 is pwm pulse signal product process figure of the present invention；Counting method is adopted to realize the pwm pulse signal output of single-chip microcomputer.P1.2, P1.3, P1.4 are On-off signal mouth, P1.0(P1.1) control mouth for output, export pwm pulse signal, controlled the armature voltage of direct current generator by H-bridge drive circuit；The dutycycle of the pwm pulse signal that the rotating speed of direct current generator is exported by P1.0, P1.1 determines, determines dutycycle with the input condition of P1.0 (P1.1), is controlled by 4 switch K1 ~ K4 corresponding for it with the mouth such as P1.2.
Embodiment 6
Described microcontroller is made up of single-chip microcomputer MCS-8051 single-chip microcomputer；The pwm signal output of single-chip microcomputer is realized by software programming；Motor-drive circuit adopts H-bridge circuit, and control chip is LMD18200, adopts the motor-drive circuit of TIP122, and P1.0 is " 0 ", and during P1.1 mouth input PWM ripple, motor rotates forward, and can regulate the speed of motor by changing the dutycycle of PWM；When P1.1 mouth is " 0 ", during P1.0 mouth input PWM ripple, motor reversal, the speed of motor is regulated again by the dutycycle changing PWM；Photoelectric isolating device is TIL113.
Claims (3)
1. a small power DC torque motor speed-regulating control device, it is characterised in that: this system is made up of microcontroller circuit, motor-drive circuit, power amplification circuit and power circuit；Described microcontroller is made up of single-chip microcomputer MCS-8051 single-chip microcomputer；Described motor-drive circuit adopts H-bridge circuit, and control chip is LMD18200, adopts the motor-drive circuit of TIP122.
2. a kind of small power DC torque motor speed-regulating control device described in the claim 1 of base area, it is characterized in that: P1.0, P1.1 mouth output pwm signal of described single-chip computer control system, interface microcontroller circuit, H-bridge drive circuit, photoelectric isolating device constitute PWM ripple and control direct current torque motor circuit, H the bridge open-loop control system of the bipolar drive of the direct current generator realized.
3., thus being sent pwm pulse signal by MCS-8051 single-chip microcomputer, by photoelectrical coupler TIL113 and H-bridge circuit, realize motor speed and the control turned to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410817611.5A CN105790655A (en) | 2014-12-25 | 2014-12-25 | Low-power DC torque motor speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410817611.5A CN105790655A (en) | 2014-12-25 | 2014-12-25 | Low-power DC torque motor speed control device |
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| Publication Number | Publication Date |
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| CN105790655A true CN105790655A (en) | 2016-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410817611.5A Pending CN105790655A (en) | 2014-12-25 | 2014-12-25 | Low-power DC torque motor speed control device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994821A (en) * | 2018-01-16 | 2018-05-04 | 北京执未来科技有限公司 | A kind of DC electric machine drive apparatus |
| CN109693017A (en) * | 2019-01-21 | 2019-04-30 | 南昌大学 | A kind of electric arc revolution speed control system and its design method |
| CN110425174A (en) * | 2019-07-24 | 2019-11-08 | 许继电源有限公司 | Fan speed regulating circuit, multi-channel parallel fan speed regulating circuit |
| CN112366993A (en) * | 2020-10-29 | 2021-02-12 | 海信（山东）空调有限公司 | Power supply control circuit, movement mechanism control method and air conditioning device |
-
2014
- 2014-12-25 CN CN201410817611.5A patent/CN105790655A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994821A (en) * | 2018-01-16 | 2018-05-04 | 北京执未来科技有限公司 | A kind of DC electric machine drive apparatus |
| CN109693017A (en) * | 2019-01-21 | 2019-04-30 | 南昌大学 | A kind of electric arc revolution speed control system and its design method |
| CN110425174A (en) * | 2019-07-24 | 2019-11-08 | 许继电源有限公司 | Fan speed regulating circuit, multi-channel parallel fan speed regulating circuit |
| CN112366993A (en) * | 2020-10-29 | 2021-02-12 | 海信（山东）空调有限公司 | Power supply control circuit, movement mechanism control method and air conditioning device |
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Application publication date: 20160720 |