Distributed Motor Control System Research Based On CAN Bus

In recent years, with the constantly rapid development of the world economy and modern industry, The scale of production in all fields constantly expanding,The production control system and information processing should be improved with high requirements. Distributed control system is the first choice because of it's high performance.Distributed control system based on Fieldbus become a hot topic in research and application fields in modern era. CAN Bus gradually become a leader in many kinds of Fieldbus,It is applied to the production fields as well as areas of life,CAN is hailed as one of the most promising Field bus.This paper is a study of distributed motor control system based on CAN Bus,It is Different from the past system which based on RS-232/RS-485bus.There are many disadvantages in the traditional system.but CAN Bus overcome their disadvantages,CAN bus have more imeliness,reliability,flexibility.The system is based on hardware platform which take AT89C52processor and CAN controller SJA1000, CAN receiver PCA85C250for the core, it aslo have MAX232and Optical coupler.In the paper,introduce some knowledge about CAN bus in the first,Then describe in detail the hardware design of the whole distributed motor control system,It is divided into two aspects,the hardware design of CAN control board and motor driver board.And draw system schematic in a supporting software named Protel99se,after that,Carry out a detailed software design according to the hardware design,give the flow chart of every system part.Software design is also divided into two aspects.PC and lower computer'Software design,Finally, test and analyze the distributed motor control system.Eventually,verified by system experiment,the distributed motor control system achieve the expected control result,it have high precision about conformity.sensitive response and stabilization.