Abstract

A novel method for multi-motor synchronous system based on CAN bus is presented. A controller of the electric vehicle with multi-brushless-DC-motor system is designed, and the strategy with the function of synchronous control is also completed. According to the requirement and characteristic of this system, the control structure is proposed, the communication protocol is designed, and the flow charts are also given. At the end of this paper, the experiment results verified that the multimotor system is reliable, the control strategy is rational, and the electric vehicle applied this multi-motor system has better dynamic response and higher reliability.

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