基于改进调度算法的新一代汽车总线及其网关  

A new generation automotive bus and relative gateway based on improved scheduling algorithm

作　　者：王跃飞[1,2] 王子涵[1,3] 张利[1,2] 张纯鹏[1,3] 杨锦[1,3] 胡京津[1,3] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]安全关键工业测控技术教育部工程研究中心,合肥230009 [3]合肥工业大学机电教改班,合肥230009

出　　处：《电子测量与仪器学报》2011年第10期894-900,共7页Journal of Electronic Measurement and Instrumentation

基　　金：安徽省科技攻关项目(1101c060305900000);广东省教育部产学研结合项目(2009B090300303);合肥工业大学博士专项科研资助基金资助项目(GDBJ2010-008);合肥工业大学2009年国家级大学生创新实验计划(091035905)

摘　　要：针对CAN总线与FlexRay总线网关,分析了网关构建的关键问题,提出了基于等差分区EDF网关队列内部消息调度方法,推导出了可调度性判定条件;分析了该方法的量化误差,求解了该误差对消息可调度性的影响参数。引入阈值概念,给出了基于阈值WRR算法的队列间的调度方法。CANoe环境下的仿真结果表明:本文方法不仅确保了实时数据验的时限,而且提高了网络的使用效率。Pointing to the gateway between CAN and FlexRay,some key problems of building it are analyzed.The arithmetic EDF is put forward to schedule the message in each queue of the gateway and its schedulable equation is deduced.Based on the equation,the sample error is discussed and the factor to measure the error＇s effect is given.By using the concept of the threshold,a threshold-WRR arithmetic is applied to implement schedule among the queues of the gateway,The simulation results in CANoe demonstrate that by using above method not only the deadline of the real-time messages can be guaranteed,but also the network utilization can be improved efficiently.

关 键 词：FlexRay-CAN网关 CANOE 调度算法 EDF 

分 类 号：TM912.9[电气工程—电力电子与电力传动]