基于时标动力学方程的CAN总线网络阻塞分析  

CAN Bus Network Traffic Study Based on Dynamic Equation on Time Scale

作　　者：张海波[1] 张自嘉[1] 周晓飞[2] 

机构地区：[1]南京信息工程大学信息与控制学院,江苏南京210044 [2]上海大学机电工程与自动化学院,上海200072

出　　处：《仪表技术与传感器》2013年第11期81-83,共3页Instrument Technique and Sensor

摘　　要：针对CAN总线构成的实时控制系统中产生的高速突发消息较为密集时,会导致网络堵塞、带宽增加、系统失稳的问题,构造了基于CAN总线的实时控制系统的时标动力学模型,研究了CAN总线采样周期与系统稳定的关系,提出改变采样周期的算法并获得CAN总线的最佳执行时间。通过MATLAB仿真得出,产生网络堵塞时,CAN网络采样周期保持在一定范围内,可以减小带宽,保持系统稳定。CAN bus control system constitutes the real-time control network. To solve the problem that when system produce more intensive high-speed burst news will lead to network congestion, bandwidth increases, system instability and other issues, this paper constructed dynamic equations on time scale based on CAN, researched on the relationship between the time sequence and system stability, propose algorithm and get the optimal execution time. Drawn through MATLAB simulation, when meet network traf- fic, CAN bus of execution keep a range of time can reduce bandwidth and stabilize the system.

关 键 词：CAN总线 采样周期 稳定 时标动力学 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]