动态分布式消息调度方法研究  

Study on dynamic allocated message scheduling method

作　　者：吴钦木[1] 罗雪梅[1] 李叶松[2] 

机构地区：[1]贵州大学电气工程学院,贵阳550003 [2]华中科技大学控制科学与工程系,武汉430074

出　　处：《计算机应用》2009年第7期1954-1956,1959,共4页journal of Computer Applications

基　　金：贵州省科学技术基金资助项目(黔科合J字[2008]2270号)

摘　　要：提出一种适用于CAN总线网络的动态分布式消息调度方法,该方法能使消息在设定的生命期内成功地发送到目的节点,并且能实现公平地分配网络带宽。在这种方法中,消息帧的标识符段被重构,重构后的标识符的二进制值与消息的生命期、消息的等待时间等建立起对应关系,消息等待时间越长或生命期越短,消息的优先级越高。同时也从理论上分析了基于该方法的网络中所有消息完全可调度必须满足的条件,并实验验证该条件的正确性和消息调度方法的有效性。A dynamic distributed message scheduling method suitable for CAN bus networks was proposed in this paper. It could guarantee that all messages of the CAN network were transmitted to destination nodes successfully within given time, and could fairly allocate network bandwidth to message streams. In this method, the identifier of message frames was reconfigured, and its binary value was related to the life-time of messages and the waiting time of messages and so on, the longer the waiting time of message or the shorter life-time was, the higher priority level of message was. The necessary condition of full schedule ability of messages was also analyzed in this paper, and some experimental results verify the necessary condition is correct and the scheduling method was valid.

关 键 词：控制局域网 动态分布式调度 生命期 网络带宽分配 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]