【摘要】 针对CAN总线中消息在固定优先级调度(FPS)算法下传输不可预知、低优先级消息容易被阻塞的问题,提出了一种基于时间触发机制的固定优先级调度(TT-FPS)算法,给出了最糟糕响应时间的计算方法。然后以纯电动汽车消息系统为例进行了TT-FPS的性能分析,验证了TT-FPS较FPS有更好的性能。更多还原

【Abstract】 Message transmission of CAN bus fixed priority static scheduling algorithm(FPS) is unpredictable,and low priority message is easily blocked.To solve these problems,a new fixed priority scheduling based on time-triggered architecture(TT-FPS) is presented,and the approach for calculating the worst-case response time of TT-FPS is given.The performance analysis of TT-FPS based on electric vehicle message model is given,and the experiment results prove that the TT-FPS is superior to FPS.更多还原