采用混合调度策略的电动汽车TTCAN网络  

Time Triggered Controller Area Network for Electric Vehicles Using Compound Scheduling Strategy

作　　者：王书举[1] 张天侠[1] 张国胜[1] 

机构地区：[1]东北大学机械工程与自动化学院,沈阳110004

出　　处：《汽车工程》2010年第11期993-996,1005,共5页Automotive Engineering

摘　　要：针对电动汽车控制系统CAN总线在调度周期性信号时的不确定性和低优先级信号易死锁等问题,提出了基于时间触发控制器局域网(TTCAN)协议的混合调度策略,它采用均匀装载(AL)算法来调度周期信号;而对随机信息的调度则采用改进的最早截止期优先(EDF)算法,即EDF调度优先级规划算法。文中还介绍了基于混合调度算法的TTCAN系统矩阵构建方法及可调度性分析方法。最后对电动汽车控制系统进行了网络性能分析,验证了该混合调度算法良好的调度性能。In view of the problems of uncertainty in scheduling periodic signals and the permanent block of lower priority message by higher one in the controller area network（CAN） of electric vehicle control system,a compound scheduling algorithm based on time-triggered controller area network（TTCAN） is proposed,in which average loading（AL） algorithm is used to schedule periodic signals,and for scheduling random signals a modified earliest deadline first（EDF） algorithm,i.e.EDF scheduling priority programming algorithm is adopted.The methods of constructing the system matrix of TTCAN and schedulability analysis are also given.Finally the network performance of electric vehicle control system is analyzed,verifying the good scheduling performance of the compound scheduling algorithm proposed.

关 键 词：电动汽车 时间触发控制器局域网 最早截止期优先算法 均匀装载算法 混合调度策略 

分 类 号：U463.6[机械工程—车辆工程] U469.72[交通运输工程—载运工具运用工程]