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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。
Aiming at the current fuel cell vehicle fuel cell bus protocol, aiming at the fuel cell bus developed by ourselves, this paper uses the uniform load (AL) scheduling algorithm to realize the scheduling of the TTCAN protocol of the powertrain system Design, the agreement on its node source address allocation, priority and parameter group to make clear provisions. Through the analysis and testing of schedulability, real-time, periodic jitter, bus load rate and transmission delay, it shows that the protocol is efficient and feasible and can meet the real-time control requirements of fuel cell vehicles.