Research on Hybrid Scheduling Algorithm Based on CAN bus

作     者：HAN Shunyuan ZHANG Zhihong HE Hong 

作者机构：School of Electrical and Electronic EngineeringTianjin University of TechnologyTianjin Key Laboratory of Complex System Control Theory and Application Transmission and Launch Department Tianjin Radio and TV Station 

出 版 物：《Instrumentation》 (仪器仪表学报（英文版）)

年 卷 期：2017年第4卷第2期

页      面：22-27页

学科分类：0810[工学-信息与通信工程] 08[工学] 

主　　题：RMS EDF NMTS Hybrid Scheduling 

摘      要：In view of the problem that the packet information preempted netw ork resources in the process of transmission in the CAN bus,w hich leads to the low utilization of netw ork resources and the low accuracy of information transmission. Thus,a hybrid scheduling algorithm NM TS based on CAN bus is proposed,in the NM TS hybrid scheduling algorithm,the dynamic scheduling algorithm EDF is used to schedule hard real-time messages to solve the problem of low utilization of netw ork resources; the static scheduling algorithm RM S is used to schedule soft real-time messages and non real-time messages,so as to solve the problem of low accuracy of information transmission. By using M ATLAB softw are,the CAN netw ork model can be built,the EDF algorithm,RM S algorithm and NM TS algorithm are simulated. The experimental results show that the netw ork resources utilization is 90%,the packet loss rate is 0% of the NM TS algorithm. Therefore,The hybrid scheduling algorithm based on CAN bus NM TS has the characteristics of high netw ork resource utilization and high accuracy of information transmission,w hich w ill be very helpful for further research of CAN bus.