摘要
数据传输可靠性对于CAN总线系统的设计影响重大,关系到整个总线系统的正常运行。以CAN总线可调度理论为依据针对总线系统中报文传输进行研究分析,利用可靠性四阶矩概率分析方法通过推导公式,以一个算例对CAN总线系统报文传输可靠性进行分析并计算;编程利用MONTE-CARLO方法进行模拟对比,从而得到了总线报文的传输可靠度。利用四阶矩可靠度计算方法对报文传输的可靠性灵敏度进行分析计算,得到的结果与定性分析一致,验证了四阶矩方法可靠性灵敏度计算的正确;通过以上的计算方法可以为调度理论的进一步研究提供理论依据,具有十分重要的实际意义。
The message transmission reliability is very important for the design of the CAN （Con-troller Area Network）bus system,which is related to the normal operation of the bus control system. The bus message transmission time parameters are analyzed based on the CAN bus scheduling theory. The formula is a derived by means of probability a-nalysis based on the fourth moment method.An example is calculated to get its message reliability and the result is contrasted with the MONTE CARLO method simulation,and then the bus mes-sage transmission reliability can be got.The relia-bility sensitivity of the message transmission is an-alyzed and calculated.The result is consistent with the qualitative analysis,which proves the correct-ness of reliability sensitivity using the fourth mo-ment method.The method provides the foundation for the scheduling theory studies.It has great prac-tical significance.
出处
《机械与电子》
2014年第11期16-20,45,共6页
Machinery & Electronics
基金
中央高校基本科研业务费资助(N110303006)
