【作者】 王艳； 纪志成； 谢林柏； 胡维礼；

【Author】 Wang Yan1,Ji Zhicheng,Xie Linbo,Hu Weili2 1.Communication and Control Engineering School of Southern Yangtze University,Wuxi 214122,P.R.China2.1002 Division,Automation School of Nanjing University of Science& Technology,Nanjing 210094,P.R.China

【机构】 江南大学通信与控制工程学院自动化系； 南京理工大学自动化学院1002教研室；

【摘要】 针对CAN网下的网络控制系统(Networked Control Systems,NCSs),提出了一种基于网络运行状态的动态调度策略,通过在线调整控制系统的采样周期以适应网络中信息流的变化。采用动态调度策略的NCS为一变采样周期系统,将存在时延和数据包丢失的变采样周期NCS建模为一类具有参数不确定性的离散切换系统,利用Lyapunov方法研究了系统的鲁棒稳定性和控制器的设计方法。仿真结果表明所提出的综合设计方法对改善网络的运行能力和保证系统稳定性是有效的。更多还原

【Abstract】 A dynamic scheduling strategy based on network running situation is proposed to allocate network bandwidth by adjusting the sample periods of control systems sharing CAN resource in the networked control systems.Then the NCS is a vary-sample period system which is modeled as a class of discrete switched systems when network-induced delay and data-packet dropout exist.Based on the model,the approach of robust controller design is studied.Finally,a group of simula-tions validate the effectiveness of the control and scheduling co-design method.更多还原