CAN总线时延网络控制系统稳定性研究  

Research of Stability for CAN Bus Delay NCS

作　　者：王义[1] 何立仁[2] 

机构地区：[1]贵州师范大学物理与电子科学学院,贵州贵阳550001 [2]贵州大学理学院,贵州贵阳550025

出　　处：《中北大学学报（自然科学版）》2014年第2期132-135,172,共5页Journal of North University of China(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61262007);贵州省科技厅省校合作计划项目(黔科合[2013]7001);贵阳市科技局科技创新平台计划(筑科合同[2012]303)

摘　　要：在CAN(Controller Area Network)总线网络控制系统(Networked Control Systems,NCS)中,信息的传输时延大大降低了系统的控制性能,使系统的稳定范围变窄,甚至可能导致系统工作的不稳定.通过对CAN总线网络控制系统的研究建立了系统的状态方程,采用Lyapunov分析法得出了CAN总线网络控制系统工作的稳定域,阐明了信息传输时延对系统工作稳定性的影响.计算机仿真结果表明:减小CAN总线网络的前向时延τca在网络总时延τ中所占的比重,可以有效提高CAN总线网络控制系统工作的稳定性.During information transmission, delay in CAN （Controller Area network） bus Nt2b / Networked Control Systems）reduced the control performance, narrowed the stability range of system, and even caused the system unstable. During the study of CAN bus NCS, state equations was established, then derived stability field of CAN bus NCS in the way of Lyapunov. And the effect of delay on system stability was clarified. The results show that reducing the proportion of forward delay to, in the total network delay τ could improve stability of the helpful suggestions to the design of CAN bus NCS. CAN bus NCS system. Meanwhile it has some

关 键 词：CAN总线 网络时延 控制性能 实时性 稳定性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]