CN206422720U

CN206422720U - A kind of step motor control system

Info

Publication number: CN206422720U
Application number: CN201621312264.1U
Authority: CN
Inventors: 白国长; 邓力
Original assignee: Guangzhou Hongyuan Electronic Technology Co Ltd
Current assignee: Guangzhou Hongyuan Electronic Technology Co Ltd
Priority date: 2016-12-01
Filing date: 2016-12-01
Publication date: 2017-08-18
Anticipated expiration: 2026-12-01

Abstract

The utility model discloses a kind of step motor control system, including control module, drive module, stepper motor, the output end of control module is connected with drive module input；Control system also includes inversed module, is also connected with the control module output end that drive module input is connected with inversed module input；Inversed module output end is connected with drive module input.When needing to use many stepper motors, the utility model reduces the control module output port quantity required for one motor of control by the improvement to step motor control system, compared with present technology, increase can management and control stepper motor quantity, reduce cost.

Description

A kind of step motor control system

Technical field

The utility model is related to motor-drive technique field, and in particular to a kind of stepping based on stepper motor driver chip Electric machine control system.

Background technology

Because stepper motor can be exactly controlled motor turned position, with the development of science and technology, especially It is the development of electronic information technology, diversification has been presented in the control mode to stepper motor.

At present, the driving of stepper motor needs multiple signal output parts of control module to be connected with drive module on the market Connect.Such as the file that number of patent application is CN201610144699.8, scope is claimed in claims for " one kind is based on The step motor control system of AT89C52 single-chip microcomputers, it is characterised in that including stepper motor, input module, display module, 8279 chips, AT89C52 single-chip microcomputers, power module, the input module are connected with 8279 chip interfaces, the display module with 8279 chip interfaces are connected, and 8279 chip is connected with AT89C52 single-chip microcomputers, the AT89C52 single-chip microcomputers and stepper motor It is connected, the power module is connected with stepper motor ".It is control stepper motor to explain the present invention in the description, is used as control The single-chip microcomputer of module needs to produce the phase signals controlled motor of A, B, C, D tetra-., can if to use multiple electric motors in the project There is wilderness demand to the I/O port quantity of single-chip microcomputer, so that needing to increase extra single-chip microcomputer, considerably increase cost.

Utility model content

The utility model is proposed based on above-mentioned technical problem, is improved by the control system to stepper motor, so as to subtract The signal output part quantity of control module, adds the electricity that a step motor control system can be controlled needed for a few motor Machine quantity, reduces cost.

In order to solve the above technical problems, the present invention is adopted the following technical scheme that：

A kind of step motor control system, including control module, drive module, stepper motor, the output end of control module It is connected with drive module input, it is characterised in that the control system also includes inversed module, with drive module input The control module output end being connected also is connected with inversed module input；Inversed module output end and drive module input phase Even.

Further, the step motor control system, its control module is single-chip microcomputer.

Further, the step motor control system, its drive module is motor drive ic.

Further, the step motor control system, its driving chip model uses the DRV8881 of 28 ports, The operating voltage 24V of the driving chip.

Further, the step motor control system, its inversed module is phase inverter.

Further, the step motor control system, its phase inverter model V4_74LVC2G04GW, the phase inverter Compatible voltage 3.3V and 5V.

Further, the step motor control system, its stepper motor is two-phase stepping motor.

Further, the step motor control system also includes current-limiting resistance.

Further, control module and inversed module pass through current-limiting resistance and driving mould in the step motor control system Block is connected

The technical solution of the utility model has the advantages that compared with prior art.

1. by applying step motor control system of the present utility model, it is only necessary to which an output port can just form two Individual control signal, reduces the demand to control module signal output part quantity.

2. by applying step motor control system of the present utility model, one electricity of control is reduced compared to present technology Signal output port quantity needed for machine, adds the number of motors that step motor control system can be controlled, reduces cost.

Brief description of the drawings

Fig. 1 is the overall circuit connection diagram of the utility model；

Fig. 2 is the schematic diagram of embodiment one；

Fig. 3 is the single-chip microcomputer NUVOTON_M0518 module maps of embodiment two；

Fig. 4 is the drive circuit figure of embodiment two stepping motor.

Embodiment

In order that the purpose of the present invention, technical scheme and beneficial effect are more clearly understood, below in conjunction with accompanying drawing and specifically Embodiment, a kind of step motor control system of the utility model is described in detail.Specific embodiment described herein is only Only to explain the present invention, it is not intended to limit the present invention.

Embodiment one：

Fig. 2 is the step motor control system of the utility model embodiment one, including 1 single-chip microcomputer, 2 reverser IC2A With IC2B, 1 driving chip, 1 two-phase stepping motor and some wires.The single-chip microcomputer has multiple I/O ports, with it In exemplified by two I/O ports.One I/O port is joined directly together with the driving chip input AIN1, while this I/O port also leads to Reverser IC2A is crossed with driving chip input AIN2 to be connected.Another I/O port and the driving chip input BIN1 phases Connection, while this I/O port is connected also by reverser IC2B with driving chip input BIN2.Four of the driving chip Output port A,B、Four input ports with the two-phase stepping motor connect one to one respectively.

When step motor control system is run, two I/O ports send signal PWM1 to the input of driving chip respectively The input BIN1 and inverter ic 2B of AIN1 and inverter ic 2A, PWM3 to driving chip.Inverter ic 2A and IC2B will connect Signal PWM1, the PWM3 received is converted to PWM2, PWM4, and is sent to input AIN2, BIN2 of driving chip.Drive core Piece is received after signal PWM1, PWM2, PWM3 and PWM4, by output port A,Β、Output control signal, control step The operation of stepper motor.

In the present embodiment, a step motor control is only needed to take two I/O ports of single-chip microcomputer to realize, and it is existing Technology then needs to take four I/O ports.

Embodiment two：

Fig. 3 and Fig. 4 are the step motor control systems of the utility model embodiment two, including 1 single-chip microcomputer NUVOTON_ M0518,1 phase inverter V4_74LVC2G04GW, 1 driving chip DRV8881, current-limiting resistance RP3,1 two-phase stepping motor Motor P3 and some wires, resistance and electric capacity composition.

Fig. 3 is single-chip microcomputer NUVOTON_M0518 module maps, and it has 64 ports, single-chip microcomputer output 23,24 respectively with Phase inverter V4_74LVC2G04GW input A1, A2 is connected.Inverter output Y1, Y2 and current-limiting resistance RP3 inputs 3,5 It is connected.Current-limiting resistance RP3 inputs 1,7 are connected with the output end 23,24 of single-chip microcomputer.Current-limiting resistance RP3 inputs 1,3, 5th, 7 and output end 2,4,6,8 connect one to one.Driving chip has 28 ports, and operating voltage is 24V, its input port 21st, 22,23,24 output end 2,4,6,8 respectively with current-limiting resistance RP3 is directly connected to, output end 5,7,8,10 respectively with stepping Motor P3 connections, output end 2,4,6,8 and output end 5,7,8,10 connect one to one.

When step motor control system is run, single-chip microcomputer sends PWM3B signals and is sent to current-limiting resistance RP3's from Fig. 4 Input 1 and inverter input A1, transmission PWM3A signals are sent to current-limiting resistance RP3 input 7 and phase inverter input Hold A2.Phase inverter overturns PWM3A and PWM3B signals, then is exported by port Y2, Y1, sends to current-limiting resistance RP3 input 5 and 3.Four kinds of pwm signals are sent to driving chip, and then controlled motor operation by current-limiting resistance RP3.

In this example, current-limiting resistance RP3 effect is to protect driving chip to be impacted from excessively stream.

In specific embodiment of the utility model, drive circuit is powered with control circuit using single power supply, they it Between be independent of each other, circuit capacitance play a part of it is anti-interference and isolation current potential.Compared with present technology, the utility model circuit is only Need single-chip microcomputer to send two pwm signals, overturn PWM3A and PWM3B signals by the effect of phase inverter, common property gives birth to four tunnels PWM level signals, then sent through protective resistance to driving chip, so that controlled motor is operated, the effect of present technology has been reached, Measured reduce to single-chip I/O mouth simultaneously the need for, reduce cost.

Claims

1. a kind of step motor control system, including control module, drive module, stepper motor, the output end of control module with Drive module input is connected, it is characterised in that the control system also includes inversed module, with drive module input phase The control module output end of connection is also connected with inversed module input；Inversed module output end and drive module input phase Even.

2. step motor control system according to claim 1, it is characterised in that the control of the step motor control system Molding block is single-chip microcomputer.

3. step motor control system according to claim 1, it is characterised in that the drive of the step motor control system Dynamic model block is motor drive ic.

4. step motor control system according to claim 1, it is characterised in that the step motor control system it is anti- Phase module is phase inverter.

5. step motor control system according to claim 1, it is characterised in that the step of the step motor control system Stepper motor is two-phase stepping motor.

6. step motor control system according to claim 1, it is characterised in that the step motor control system is also wrapped Include current-limiting resistance.

7. step motor control system according to claim 6, it is characterised in that controlled in the step motor control system Molding block and inversed module are connected by current-limiting resistance with drive module.