Multi-channel DC motor drive control system based on cpld

Abstract

The invention discloses a multipath DC motor drive control system based on a CPLD, and the system comprises a controlled DC motor which is provided with a first limiting sensor and a second limiting sensor, wherein the first and second limiting sensors are used for limiting the forwarding rotation and / or reverse rotation. The forwarding rotation and / or reverse rotation of the DC motor is controlled by one drive circuit, and the drive circuit of the DC motor consists of a DC motor driver, an optoelectronic isolation device, a CPLD control unit, and a single-chip microcomputer. A communication interface of the CPLD control unit is in communication connection with the single-chip microcomputer, and the single-chip microcomputer is in communication connection with an upper control computer. The CPLD control unit consists of a sensor signal processing unit and a motor signal processing unit, and the signal output end of the sensor signal processing unit is connected with a signal input end of the motor signal processing unit. The system is advantageous in that the motion control of the controlled DC motor is completely implemented through the CPLD control unit, and facilitates the development of drive control of a multipath DC motor.

Description

technical field [0001] The invention relates to a DC motor drive control system, in particular to a CPLD-based multi-channel DC motor drive control system. Background technique [0002] At present, the traditional DC motor drive control mostly uses a combination of single-chip microcomputer and discrete component embedded hardware and embedded programs for sensor detection, motor operation, and motor operation limit control. The DC motor drive control realized by the combination of single-chip microcomputer and discrete components, because the signal of the limit sensor needs to be processed by the single-chip microcomputer identification, response and other programs, so the timeliness is poor; and there are many discrete components, low reliability; the peripheral circuit is complex and the circuit board area is large , low scalability. CPLD (English abbreviation of Complex Programmable Logic Device, complex programmable logic control device) control unit has the advantage...

AI Technical Summary

Problems solved by technology

The DC motor drive control realized by the combination of single-chip microcomputer and discrete components, because the limit sensor signal needs to be processed by the single-chip microcomputer identification, response and other programs, so the timeliness is poor; and there are many discrete components, the reliability is low; the peripheral circuit is complex and the circuit board area is large , low scalability

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