基于RM的车身网络控制系统设计  

RM-based design of networked control system of vehicle body

作　　者：刘长英[1] 乔宇[1] 王天皓[1] 

机构地区：[1]吉林大学仪器科学与电气工程学院,吉林长春130061

出　　处：《河北工业大学学报》2013年第5期66-70,共5页Journal of Hebei University of Technology

基　　金：吉林省科技发展计划重点项目(20060315);高等学校博士学科点基金(2011061110059)

摘　　要：随着车身控制系统的日益智能化,使车身网络规模和通信负载量显著增长,车身网络中信息传输延时愈发明显,大大降低了系统的实时性和可靠性.通过分析车身网络的通信需求,设计了合理的车身CAN网络拓扑结构;根据车身网络控制系统中信息传送的特点,采用单调速率调度(RM)算法,对车身网络控制系统的可调度性和实时性进行分析,并通过实验进行验证.实验结果表明该设计方法建立的车身网络系统能够很好地保证信息传送的实时性和可行性,从整体上优化了车身网络控制系统.With the vehicle body control system becoming more and more intelligent, the size of the network and the capacity of communication load have increased considerably, the signal transmission delay in network control system of vehicle body has become more and more obvious, which greatly worsens the real-time performance and feasibility of the network. This study designed a reasonable vehicle body CAN network topology by analyzing the communication demand of vehicle body network system. By analyzing the characteristics of the signal transmission in the network control system of vehicle body, we proposed an algorithm called Rate-Monotonic scheduling mechanism suitable for the vehicle body and analyzed the schedulability and real-time performance. Simulation results verify that the real-time performance and feasibility of the networked control system can be guaranteed by applying this method.This design optimizes the networked control system of vehicle body.

关 键 词：CAN总线 RM调度算法 车身网络 可调度性 实时性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]