CN207588746U - Design of Stepper Motor Subdivision control circuit - Google Patents
Design of Stepper Motor Subdivision control circuit Download PDFInfo
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- CN207588746U CN207588746U CN201721777425.9U CN201721777425U CN207588746U CN 207588746 U CN207588746 U CN 207588746U CN 201721777425 U CN201721777425 U CN 201721777425U CN 207588746 U CN207588746 U CN 207588746U
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- stepper motor
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Abstract
The utility model provides a kind of Design of Stepper Motor Subdivision control circuit, including controller, ring distributor, DAC converter, compares chopper circuit, PWM combiner circuits, predrive circuit, power driving circuit；Controller is used to control the sequential logic of entire Design of Stepper Motor Subdivision control circuit；Controller sends out subdivision's signal and generates comparison reference voltage through DAC converter, and controller also generates clock signal and exports to comparing chopper circuit；Chopping signal is generated after comparing chopper circuit acquisition stepper motor current signal and reference voltage；Ring distributor generates motor commutation signal under controller action；Controller generates afterflow mode signal and exports to PWM combiner circuits；PWM combiner circuits will generate drive signal after chopping signal, afterflow mode signal, the synthesis of motor commutation signal and be sent to predrive circuit；Power driving circuit Driving Stepping Motor under predrive circuit drives is run.The utility model calorific value and motor driving parameter are controllable.
Description
Technical field
The utility model is related to a kind of electronic drivers, are mainly used in the driving circuit of air auxiliary post processing pump.
Background technology
As stepper motor is in the popularization of the application of computer peripheral equipment, stepper motor is more and more to be applied in 3D printing, beats
Print machine, automobile after-treatment system etc.；
Driving system of stepping motor is mainly made of stepper motor, driver, mechanical connection system；The prior art generally makes
Stepper motor driver chip is integrated with automotive grade（L6208Q/L6228Q）, but due to small calorific value is larger can to system
Hidden danger is brought by property；
Since automotive grade stepper motor driver all tends to be integrated, so stepper motor driver heating problem is difficult solution
Certainly, and 12V/24V systems are difficult compatibility.
Invention content
For the deficiencies in the prior art, the utility model provides a kind of Design of Stepper Motor Subdivision control circuit, is one
Kind calorific value, high-subdividing number and motor drive the controllable drive scheme of parameter, to adapt to various stepper motors and application environment.This
Utility model the technical solution adopted is that：
A kind of Design of Stepper Motor Subdivision control circuit, including controller, ring distributor and corresponding to the stepper motor number of phases
All the way or number road driving branch；
Include per driving branch all the way：DAC converter compares chopper circuit, PWM combiner circuits, predrive circuit, power
Driving circuit；
Controller is used to control the sequential logic of entire Design of Stepper Motor Subdivision control circuit；
Controller sends out subdivision's signal and generates comparison reference voltage through DAC converter, and controller generates clock signal output
To comparing chopper circuit；Chopping signal is generated after comparing chopper circuit acquisition stepper motor current signal and reference voltage；
Ring distributor generates motor commutation signal under controller action；Controller generates afterflow mode signal and exports to PWM synthesis
Circuit；PWM combiner circuits will generate drive signal after chopping signal, afterflow mode signal, the synthesis of motor commutation signal and be sent to
Predrive circuit；Power driving circuit Driving Stepping Motor under predrive circuit drives is run.
Further, power driving circuit uses H-bridge drive circuit.
Further, stepper motor current signal is acquired by the sampling resistor being connect with power driving circuit.
The advantages of the utility model：
1. due to being designed using discrete component, H-bridge drive circuit can drive MOSFET big according to different capacity selection of Motor
The big system heat generation that reduces increases system reliability；
2. can driving current high-subdividing number be changed according to different application demand；
3. the flexible afterflow mode and chopping frequency for adjusting circuit can be driven according to different motors；
It 4., can be with Redundancy Design 12V/24V compatible hardwares since H-bridge drive circuit can be with independent design.
Description of the drawings
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
With reference to specific drawings and examples, the utility model is described in further detail.
As shown in Figure 1, the utility model proposes Design of Stepper Motor Subdivision control circuit, including controller, ring distributor,
And it is corresponding with the stepper motor number of phases all the way or number road driving branch；In this example, two-phase stepping motor is employed, therefore be equipped with
Two-way drives branch, in other embodiments, such as four phase step motor, then four roads should be set to drive branch；
Include per driving branch all the way：DAC converter compares chopper circuit, PWM combiner circuits, predrive circuit, power
Driving circuit；
In the Design of Stepper Motor Subdivision control circuit, microcomputer/SCM system can be used in controller, for controlling entire stepping
The sequential logic of motor micro-stepping control circuit；
By taking the A phases of stepper motor drive branch as an example,
Controller sends out subdivision's signal and generates comparison reference voltage VAref through DAC converter, and controller generates clock signal
CLOCK is exported to comparing chopper circuit；After comparing chopper circuit acquisition stepper motor current signal and reference voltage VAref relatively
Generate chopping signal A_SHUT；Stepper motor current signal can be acquired by the sampling resistor RA being connect with power driving circuit；
Ring distributor generates motor commutation signal DIRA under controller action；Controller generates afterflow mode signal
DecayA is exported to PWM combiner circuits；PWM combiner circuits change chopping signal A_SHUT, afterflow mode signal DecayA, motor
Drive signal, which is generated, after phase signals DIRA synthesis is sent to predrive circuit；Power driving circuit drives under predrive circuit drives
Dynamic stepper motor operation；
Wherein, power driving circuit uses H-bridge drive circuit；
The B phases of stepper motor drive branch principle to be same as above；
The utility model DAC converter, ring distributor compare chopper circuit, PWM combiner circuits, predrive circuit, H
Bridge driving circuit realizes the micro-stepping control of stepper motor to realize the work for reducing the stability that motor shakes, increases motor torque
With.
The utility model proposes Design of Stepper Motor Subdivision control circuit can be general with automotive grade 12V/24V systems.
Claims (3)
1. a kind of Design of Stepper Motor Subdivision control circuit, which is characterized in that including controller, ring distributor and with stepping electricity
The machine number of phases accordingly all the way or number road driving branch；
Include per driving branch all the way：DAC converter compares chopper circuit, PWM combiner circuits, predrive circuit, power drive
Circuit；
Controller is used to control the sequential logic of entire Design of Stepper Motor Subdivision control circuit；
Controller send out subdivision's signal through DAC converter generate comparison reference voltage, controller generate clock signal export to than
Compared with chopper circuit；Chopping signal is generated after comparing chopper circuit acquisition stepper motor current signal and reference voltage；Annular
Distributor generates motor commutation signal under controller action；Controller generates afterflow mode signal and exports to PWM combiner circuits；
PWM combiner circuits will generate drive signal after chopping signal, afterflow mode signal, the synthesis of motor commutation signal and be sent to predrive
Circuit；Power driving circuit Driving Stepping Motor under predrive circuit drives is run.
2. Design of Stepper Motor Subdivision control circuit as described in claim 1, which is characterized in that
Power driving circuit uses H-bridge drive circuit.
3. Design of Stepper Motor Subdivision control circuit as described in claim 1, which is characterized in that
Stepper motor current signal is acquired by the sampling resistor being connect with power driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721777425.9U CN207588746U (en) | 2017-12-19 | 2017-12-19 | Design of Stepper Motor Subdivision control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721777425.9U CN207588746U (en) | 2017-12-19 | 2017-12-19 | Design of Stepper Motor Subdivision control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207588746U true CN207588746U (en) | 2018-07-06 |
Family
ID=62739193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721777425.9U Active CN207588746U (en) | 2017-12-19 | 2017-12-19 | Design of Stepper Motor Subdivision control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207588746U (en) |
-
2017
- 2017-12-19 CN CN201721777425.9U patent/CN207588746U/en active Active
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