Design and implementation of CAN communication system for distributed electric drive vehicle

Each wheel in distributed drive vehicle can be driven and controlled independently and it also has the advantages of compact structure, high transmission efficiency, easy to precisely control etc. Bus communication with a plurality of electrical control unit coordinated control system is taken as the study object, a communication protocol is designed for multiple control nodes based on SAE J1939 and CAN2.0B communication protocol. And the software and hardware platform for the communication system are achieved by using controller rapid prototyping method and automatic code generation technology. Under the wheel unloaded conditions the communication system designed before are tested in real vehicle. The test results indicate that the signals such as control command, motor speed, motor current controller temperature and so on can be transmitted accurately and reliably. The communication system has strong anti-interference ability to meet the real-time control demands of the chassis control system.