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Stepping motor position controller based on CPLD

A stepping motor and controller technology, applied in the direction of motor generator control, control system, electrical components, etc., can solve the problems of large step angle and limited application, etc., achieve improved reliability, small accumulated errors, and accelerated development speed Effect

Inactive Publication Date: 2015-02-25
HARBIN JINDU SOLAR ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the system composed of stepper motors as the actuator is usually used in systems with low control accuracy due to the large step angle, which limits its application in high-precision systems.

Method used

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  • Stepping motor position controller based on CPLD
  • Stepping motor position controller based on CPLD
  • Stepping motor position controller based on CPLD

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] combine figure 1 , figure 1 It is a system principle structure diagram of the present invention;

[0019] A CPLD-based stepper motor position controller, which is composed of a host computer, a controller, a stepper motor driver and a stepper motor, the host computer is connected to the controller, the controller is connected to the stepper motor driver, and the stepper motor driver is connected to stepper motor.

[0020] The upper computer and the controller are connected through the RS232 serial port.

[0021] The controller adopts CPLD.

[0022] Described CPLD outputs three signals of pulse signal PUL, direction signal DIR and potential energy signal ENA to the stepper motor driver; After the ring distributor of the stepper motor driver receives the signal, the signal is distributed to the stepper motor driver according to certain rules Each output terminal controls the conduction and cut-off of the excitation winding; the signal of each phase conduction or cut-o...

Embodiment 2

[0024] figure 2 It is a system program flow chart of the present invention;

[0025] When the system is powered on, the system initialization starts, mainly including the initialization of the controller and the initialization of the initial conditions of each system; then obtain the total number of steps and direction information of the stepper motor angle signal and calculate the operating parameters; open the clock interrupt and enter the interrupt service program, the signal is sent to the stepper motor driver, and the motor is driven to complete a stepping action.

Embodiment 3

[0027] image 3 It is a schematic circuit diagram of the control system of the present invention;

[0028] Connect the serial port of the PC to the CPLD through the data cable attached to the CPLD, and connect the host computer to the CPLD through the RS232 serial port. The CPLD receives and outputs three signals through the interface I / O1.0, I / O1.1, I / O O1.2 is transmitted to the stepper motor driver, where the power supply is connected to the P2 port of the stepper motor, and finally the processed signal is transmitted to the stepper motor.

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PUM

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Abstract

The invention relates to a stepping motor position controller based on a CPLD. The stepping motor position controller based on the CPLD comprises an upper computer, a controller, a stepping motor driver and a stepping motor. The CPLD is adopted for the controller, and the upper computer is communicated with the controller through a serial port. According to the stepping motor position controller based on the CPLD, assembler programming is conducted through the upper computer, a signal is transmitted to the controller through the serial port, a pulse signal PUL, a direction signal DIR and a potential energy signal ENA are generated by the controller and transmitted to the stepping motor driver, the stepping motor carries out corresponding actions according to the pulse signal of the driver, and the drive process is completed.

Description

technical field [0001] The invention relates to a stepping motor position controller, in particular to a CPLD-based stepping motor position controller. Background technique [0002] Position control systems are widely used in profiling machine tools, robots, motion control, antenna scanning, electronic aiming, aircraft attitude control, navigation control, etc. Stepper motors are often used as the actuators of the system. Since the input of the stepper motor is a pulse sequence, the output is the corresponding incremental displacement or step action. When it performs continuous stepping action, the rotation speed and the frequency of the input pulse maintain a strict corresponding relationship, and it is not affected by voltage fluctuations and load changes, and the stepping motor can directly accept digital control, so it is very suitable for microcomputer control . However, the system composed of stepper motors as the actuator is usually used in systems with low control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P8/00
Inventor 王永刚胡晶
Owner HARBIN JINDU SOLAR ENERGY TECH
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