纯电动汽车时间触发总通讯协议网络消息调度策略研究

Research and Validation of TTCAN Scheduling Policy for EV

为提高纯电动汽车通信网络的带宽利用率和实时性,针对网络中随机性消息和周期性信息并存的特点,提出了一种时间触发总通讯协议(time trigged controllen area network,TTCAN)混合调度策略,以自主研发的双电机驱动电动车动力控制系统为对象,结合消息的周期性和重要程度,对通信网络内消息的调度策略进行了设计优化。最后,通过在CAN网络硬件测试平台上的验证,结果表明,所设计TTCAN网络与普通CAN网络相比,对网络的带宽利用率和随机性消息的实时性都有显著的提高。

In order to improve the bandwidth utilization and real-time performance of pure electric vehicles communication network,a hybrid scheduling policy of TTCAN was proposed,considering the characteristic that sporadic and periodical message coexist in the network. Research on the power control system of dual motor driven EV which was developed independently,the scheduling of messages in the network was designed and optimized according to its period and importance,The scheduling policy was validated on the CAN network hardware validation platform,the results show that TTCAN scheduling policy significantly improved the bandwidth utilization and randomness of real-time performance,comparing to common CAN network.