CN204681279U

CN204681279U - A kind of Multichannel stepping motor control system based on ARM

Info

Publication number: CN204681279U
Application number: CN201520369746.XU
Authority: CN
Inventors: 李劲; 李松; 刘俊
Original assignee: Yangzhou Dajin Motor Manufacturing Co Ltd
Current assignee: Yangzhou Dajin Motor Manufacturing Co Ltd
Priority date: 2015-06-02
Filing date: 2015-06-02
Publication date: 2015-09-30
Anticipated expiration: 2025-06-02

Abstract

The utility model relates to a kind of Multichannel stepping motor control system based on ARM, belongs to Motor Control Field.The utility model comprises master console, mixed-media network modules mixed-media, ARM micro-chip processor, FPGA pulse control circuit, motor-drive circuit, motor body and grating sensor.Wherein master console and ARM micro-chip processor are coupled together by mixed-media network modules mixed-media, ARM micro-chip processor, FPGA pulse control circuit, motor-drive circuit, motor body, grating sensor connect in order, and last grating sensor and ARM micro-chip processor are connected to form closed loop circuit.Combine based on ARM control and the advantage controlling these two kinds of control modes based on FPGA, achieve the synchronous of multiple stage stepping motor or asynchronous controlling, wherein FPGA accurately controls stepping motor, ARM is then combined with master console, realize the Synchronization Control to multiple stage synchronous machine, not only save cost, also facilitate the unitized management of motor simultaneously.

Description

A kind of Multichannel stepping motor control system based on ARM

Technical field

The utility model belongs to Motor Control Field, particularly relates to a kind of Multichannel stepping motor control system based on ARM.

Background technology

Stepping motor is that electric impulse signal is transformed into angular displacement to control the small and special electric machine of rotor turns.As executive component in automatic control equipment.Often input a pulse signal, stepping motor takes a step forward, therefore also known as pulse motor.When non-overload, the rotating speed of motor, the position of stopping only depending on frequency and the umber of pulse of pulse signal, and not by the impact of load variations, namely add a pulse signal to motor, motor then turns over a step angle.The existence of this linear relationship, adds that stepping motor only has periodic error and without features such as accumulated errors.Make to control at the control field stepping motor such as speed, position very simple that become.

Current step motor control system is generally only limited to motor and is equipped with cover control system, and such pattern is waste in a kind of resource for extensive use user, controls also extremely inconvenient simultaneously.

Utility model content

The utility model is intended to solve the problem, and proposes a kind of multichannel step motor control system, can control multiple stage stepping motor simultaneously, achieves standardization and unitizes.

The utility model comprises master console, mixed-media network modules mixed-media, ARM micro-chip processor, FPGA pulse control circuit, motor-drive circuit, motor body and grating sensor.Wherein master console and ARM micro-chip processor are coupled together by mixed-media network modules mixed-media, ARM micro-chip processor, FPGA pulse control circuit, motor-drive circuit, motor body, grating sensor connect in order, and last grating sensor and ARM micro-chip processor are connected to form closed loop circuit.

Mixed-media network modules mixed-media have employed DP83848C chip.

ARM micro-chip processor have employed STM32F407 chip.

FPGA pulse control circuit have employed EP2C8Q208C8 chip.

What motor-drive circuit adopted is the driver of combination as stepping motor of L297 chip and L298 chip.

The utility model has following beneficial effect:

The utility model combines based on ARM control and the advantage controlling these two kinds of control modes based on FPGA, achieve the synchronous of multiple stage stepping motor or asynchronous controlling, wherein FPGA accurately controls stepping motor, ARM is then combined with master console, realize the Synchronization Control to multiple stage synchronous machine, the most multipotency of native system realizes the control to 8 stepping motors, not only saves cost, also facilitates the unitized management of motor simultaneously.

Accompanying drawing explanation

Fig. 1 is overall system architecture figure.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is further elaborated:

As shown in the figure, the utility model comprises master console 1, mixed-media network modules mixed-media 2, ARM micro-chip processor 3, FPGA pulse control circuit 4, motor-drive circuit 5, motor body 6 and grating sensor 7.Wherein master console 1 and ARM micro-chip processor 3 are coupled together by mixed-media network modules mixed-media 2, ARM micro-chip processor 3, FPGA pulse control circuit 4, motor-drive circuit 5, motor body 6, grating sensor 7 connect in order, and last grating sensor 7 is connected to form closed loop with ARM micro-chip processor 3.

The Main Function of master console 1 is the state by mixed-media network modules mixed-media 2 remote monitoring work at present motor, also can perform the functions such as beginning, stopping, rotating speed setting, reset, rotating forward, reversion simultaneously, can say that master console 1 is the master switch of whole system.

Mixed-media network modules mixed-media 2 effect is in the entire system master console 1 and ARM micro-chip processor 3 to be coupled together by network, and what we adopted is DP83848C chip.

The Main Function of ARM micro-chip processor 3 communicates with master console 1, receives the control information of master console 1; Feedback motor current state is to master console; Fill order is sent to FPGA, directly the pulse of control FPGA exports, based on the realization of above function, we have employed STM32F407 chip, the Ethernet interface that this chip carries can extended network module very easily, in addition, the FSMC of this chip controls to support more expansion, facilitates the read-write of data.

In FPGA pulse control circuit 4, most important parts are exactly FPGA, it is the core component that whole system is achieved, send relevant parameter as ARM and order after FPGA, FPGA namely by the pulse that State Transferring module controls exports, thus reaches the effect controlling motor.The FPGA that native system adopts is EP2C8Q208C8, and this fpga chip belongs to middle and small scale device, and its size to fit, stability are high and can the feature such as reprovision be all select its reason.

Motor-drive circuit 5 distribution acting as pulse in the present system and power amplification, what we adopted is the driver of combination as stepping motor of L297 and L298, L297 chip can produce 4 phase control signals, can be used for the bipolar and four phase single-phase stepper motors of computer-controlled two-phase, can with single four clapping, two four to clap, four-phase eight-step mode control step motor.PWM chopper circuit in chip can regulate the electric current in the motor winding in stepping motor winding under switching mode.L298 chip is the high-voltage large current power integrated circuit including dual H-bridge, and its feature is: when not relying on input signal, can allow or forbidding devices function.

The effect of grating sensor 7 is to provide motor current rotor positional information to feed back to ARM in real time, make the accuracy of system and stability higher, system is more complete.

Control 8 stepping motors are features of native system simultaneously is also difficult point, in order to realize Synchronization Control, this must be used for by upper and lower computer simultaneously, first at host computer, namely coding corresponding to 1 ~ No. 8 motor is defined in master console 1, master console 1 wherein a certain step motor control instruction will send to slave computer subsequently, i.e. ARM micro-chip processor 3, information is sent to FPGA pulse control circuit 4 after processing by analysis after receiving instruction by ARM micro-chip processor 3, the signal received is stored in eight bit register by FPGA pulse control circuit 4 after decoder analysis, register is position corresponding 1 ~ No. 8 passage respectively from low to high, may correspond to 1 ~ No. 8 motor, after completing the selection of stepping motor, the control command that master console sends can be processed, as " beginning ", " stopping ", " rotating speed setting ", " reset ", " rotating forward ", " reversion " etc.

The above; it is only preferred embodiment of the present utility model; not do any type of restriction to the utility model, those skilled in the art utilizes the technology contents of above-mentioned announcement to make a little simple modification, equivalent variations or modification, all drops in protection range of the present utility model.

Claims

1. the Multichannel stepping motor control system based on ARM, comprise master console, mixed-media network modules mixed-media, ARM micro-chip processor, FPGA pulse control circuit, motor-drive circuit, motor body and grating sensor, it is characterized in that: described master console and described ARM micro-chip processor are coupled together by described mixed-media network modules mixed-media, described ARM micro-chip processor, described FPGA pulse control circuit, described motor-drive circuit, described motor body, described grating sensor connects in order, last described grating sensor and described ARM micro-chip processor are connected to form closed loop circuit.

2. a kind of Multichannel stepping motor control system based on ARM according to claim 1, is characterized in that: described mixed-media network modules mixed-media have employed DP83848C chip, and described ARM micro-chip processor have employed STM32F407 chip.

3. a kind of Multichannel stepping motor control system based on ARM according to claim 1, is characterized in that: described FPGA pulse control circuit have employed EP2C8Q208C8 chip.

4. a kind of Multichannel stepping motor control system based on ARM according to claim 1, is characterized in that: the driver of combination as stepping motor of what described motor-drive circuit adopted is L297 chip and L298 chip.