CN206490610U - A kind of motor circuit of use closed-loop pulse width PWM speed regulating controls - Google Patents
A kind of motor circuit of use closed-loop pulse width PWM speed regulating controls Download PDFInfo
- Publication number
- CN206490610U CN206490610U CN201720007223.XU CN201720007223U CN206490610U CN 206490610 U CN206490610 U CN 206490610U CN 201720007223 U CN201720007223 U CN 201720007223U CN 206490610 U CN206490610 U CN 206490610U
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- China
- Prior art keywords
- circuit
- chip microcomputer
- motor
- pulse width
- use closed
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- Control Of Direct Current Motors (AREA)
Abstract
The utility model discloses a kind of motor circuit of use closed-loop pulse width PWM speed regulating controls, including single-chip microcomputer, and the drive circuit and display portion being connected with single-chip microcomputer, optical coupling isolation circuit is also associated between the drive circuit and single-chip microcomputer, A/D converter circuit is also associated between the speed probe and single-chip microcomputer, the speed probe is used for the rotating speed for monitoring dc motor, the control circuit includes power circuit and interface microcontroller circuit, the power circuit is used to provide working power for the motor circuit, the interface microcontroller circuit is connected with single-chip microcomputer.Motor circuit of the present utility model is simple in construction, and reliability is high, convenient operating maintenance and system accuracy height.
Description
Technical field
The utility model is related to technical field of motors, more specifically, more particularly to a kind of using closed-loop pulse width PWM
The motor circuit of speed regulating control.
Background technology
Because the switching frequency of PWM governing systems is higher, the filter action only by armature inductance is achieved with smoothly straight
Electric current is flowed, low-speed characteristic is good, steady speed precision is high, speed-regulating range width, up to 1：10000 or so；Similarly, since switching frequency is high,
Fast response characteristic is good, dynamic strong antijamming capability, can obtain very wide frequency band；Switching device is only operated on off state,
Main circuit loss is small, and unit efficiency is high；When dc source uses uncontrollable rectifier, power factor of electric network is higher than phase controlled rectifier.
Motor speed governing system realizes Digital Control using microcomputer, is one of the Main way of Electrified Transmission development.Adopt
After microcomputer control, whole governing system realizes total digitalization, simple in construction, and reliability is high, and convenient operating maintenance, motor is steady
Rotary speed precision can reach higher level when state is operated, and quiet dynamic indices can preferably meet high-performance electric in industrial production
The requirement of gas transmission.
Utility model content
The purpose of this utility model is that providing a kind of use closed-loop pulse width PWM simple in construction, easy to detect adjusts
The motor circuit of speed control.
In order to achieve the above object, the technical solution adopted in the utility model is as follows：
A kind of motor circuit of use closed-loop pulse width PWM speed regulating controls, including single-chip microcomputer, and be connected with single-chip microcomputer
Drive circuit and display portion, be also associated with optical coupling isolation circuit between the drive circuit and single-chip microcomputer, the rotating speed is passed
A/D converter circuit is also associated between sensor and single-chip microcomputer, the speed probe is used for the rotating speed for monitoring dc motor, institute
Stating control circuit includes power circuit and interface microcontroller circuit, and the power circuit is used to provide work electricity for the motor circuit
Source, the interface microcontroller circuit is connected with single-chip microcomputer.
Further, the single-chip microcomputer uses 89C51 single-chip microcomputers.
Further, the A/D converter circuit uses ADC0809 chips.
Compared with prior art, the utility model has the advantage of：Motor circuit of the present utility model is simple in construction, reliably
Property high, convenient operating maintenance and system accuracy is high.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the frame diagram of the motor circuit of use closed-loop pulse width PWM speed regulating controls described in the utility model.
Fig. 2 is the circuit diagram of the motor circuit of use closed-loop pulse width PWM speed regulating controls described in the utility model.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that advantage of the present utility model
It can be easier to be readily appreciated by one skilled in the art with feature, so as to make protection domain of the present utility model apparent clear and definite
Define.
Refering to shown in Fig. 1 and Fig. 2, the utility model provides a kind of motor of use closed-loop pulse width PWM speed regulating controls
Circuit, including single-chip microcomputer 1, and drive circuit 2, display portion 3, control circuit 4 and the speed probe being connected with single-chip microcomputer 1
5。
Wherein, it is also associated with optical coupling isolation circuit 6 between the drive circuit 2 and single-chip microcomputer 1, it is completely isolated to avoid doing
Disturb, A/D converter circuit 7 is also associated between the speed probe 5 and single-chip microcomputer 1, the speed probe 5 is used to monitor directly
The rotating speed of motor is flowed, the control circuit 4 includes power circuit 8 and interface microcontroller circuit, and the power circuit 6 is for being
The motor circuit provides working power, and the interface microcontroller circuit is connected with single-chip microcomputer 1.
The single-chip microcomputer 1 uses 89C51 single-chip microcomputers.
The A/D converter circuit 7 uses ADC0809 chips, and ADC0809 chips are 8 the most frequently used analog-digital converters.It
Analog-to-digital conversion principle using gradually approaching type, chip is powered by single+5V power supplys, 8 road input analog amounts can be entered with timesharing
Row A/D is changed, and typical A/D conversion times are 100 delicate left and right.In similar-type products, point of ADC0809 analog-digital converters
Resolution, conversion speed and price belong to middle position.
In a power 8, the power supply of sensor directly uses 24V batteries, and the power supply of single-chip microcomputer 1 is then steady by three ends
Depressor 78L05 uses 24V Power converts to 5V.
The dc motor that the utility model requirement is controlled is 12V dc motors, belongs to the motor of Small And Medium Capacity.By
Permanent magnet is derived from the excitation of brushless direct current motor, so needing to draw exciting current from power network not as asynchronous machine；
Due in rotor without alternating flux, not only without copper loss but also without iron loss on its rotor, so efficiency ratio is high with capacity asynchronous motor
10% or so, in general, the power energy pointer (η cos θ) of brushless direct current motor is higher than same capacity threephase asynchronous
12%-20%.The permanent magnet of the brushless direct current motor of Small And Medium Capacity, now more using the rare-earth Nd-Fe-B (Nd- of high energy product
Fe-B) material.Therefore, the volume ratio of rare earth permanent magnetic brushless motor reduces a support with capacity threephase asynchronous
Number.Motor selected by the utility model is rare earth permanent magnetic brushless dc motor.
89C51 chips do not have PWM output functions, it is necessary to by programming realization.In order to which when exporting PWM ripples, single-chip microcomputer is still
Other programs can be performed, it is possible to use the timer inside single-chip microcomputer, which overflows, to interrupt to realize.Dutycycle one byte of occupancy
RAM, dutycycle D=N/256.(pulse wide modulation is to produce the square wave that the cycle is about 8ms using single-chip microcomputer internal interrupt, by changing
Become the width of high level to be changed the rotating speed of motor) single-chip microcomputer output pwm signal is utilized, realize from 0% --- 100%
It is linear adjustable.
Motor circuit of the present utility model is simple in construction, and reliability is high, convenient operating maintenance and system accuracy height.
Although being described in conjunction with the accompanying embodiment of the present utility model, patent owner can want in appended right
Various deformations or amendments are made within the scope of asking, as long as no more than the protection model described by claim of the present utility model
Enclose, all should be within protection domain of the present utility model.
Claims (3)
1. a kind of motor circuit of use closed-loop pulse width PWM speed regulating controls, it is characterised in that：Including single-chip microcomputer, Yi Jiyu
The drive circuit and display portion of single-chip microcomputer connection, optical coupling isolation circuit is also associated between the drive circuit and single-chip microcomputer,
A/D converter circuit is also associated between speed probe and single-chip microcomputer, the speed probe is used to monitor turning for dc motor
Speed, the control circuit includes power circuit and interface microcontroller circuit, and the power circuit is used to provide for the motor circuit
Working power, the interface microcontroller circuit is connected with single-chip microcomputer.
2. the motor circuit of use closed-loop pulse width PWM speed regulating controls according to claim 1, it is characterised in that：Institute
Single-chip microcomputer is stated using 89C51 single-chip microcomputers.
3. the motor circuit of use closed-loop pulse width PWM speed regulating controls according to claim 1, it is characterised in that：Institute
A/D converter circuit is stated using ADC0809 chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720007223.XU CN206490610U (en) | 2017-01-04 | 2017-01-04 | A kind of motor circuit of use closed-loop pulse width PWM speed regulating controls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720007223.XU CN206490610U (en) | 2017-01-04 | 2017-01-04 | A kind of motor circuit of use closed-loop pulse width PWM speed regulating controls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206490610U true CN206490610U (en) | 2017-09-12 |
Family
ID=59771284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720007223.XU Expired - Fee Related CN206490610U (en) | 2017-01-04 | 2017-01-04 | A kind of motor circuit of use closed-loop pulse width PWM speed regulating controls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206490610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115395828A (en) * | 2022-08-19 | 2022-11-25 | 深圳市航顺芯片技术研发有限公司 | Speed regulation method and system for brushless direct current motor and motor driving equipment |
-
2017
- 2017-01-04 CN CN201720007223.XU patent/CN206490610U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115395828A (en) * | 2022-08-19 | 2022-11-25 | 深圳市航顺芯片技术研发有限公司 | Speed regulation method and system for brushless direct current motor and motor driving equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170912 Termination date: 20190104 |