燃料电池汽车TTCAN网络的调度设计

Design on Scheduling of TTCAN in Fuel Cell Bus

针对目前燃料电池汽车应用层协议不统一的情况,该文以自主研发的燃料电池中巴车为对象,基于SAEJ1939协议,利用均匀装载(AL)调度算法实现了其动力总成系统TTCAN协议的调度设计,该协议对其各节点源地址分配、优先级和参数组定义做出明确规定。通过可调度性、实时性、周期抖动、总线负载率和发送延迟的分析和测试,表明该协议是高效可行的,能满足燃料电池汽车实时控制的要求。

According to the disunity of Fuel Cell Vehicle＇s（FCE） application layer protocol at present,on the basis of SAE J1939,a time-triggered CAN（TTCAN）protocol for powertrain system of self developed fuel cell middle bus was designed in this paper by means of average-loading scheduling algorithm,and each node＇s source address,output parameter,parameter groups were clearly defined in the protocal.The performance of schedulability,real-time capability,period jitter,bandwidth utilization and send delay was analysed and tested,the results prove that the protocol is effective and reliable,and could meet the requirements of FCE＇s real-time control.