网络控制系统的分析与控制

Analysis and Control of Networked Control Systems

网络控制系统是指通过网络形成闭环的实时反馈控制系统。针对同时具有网络诱导时延和数据包丢失的网络控制系统,研究了其建模、稳定性分析与控制器设计的问题。所考虑的网络诱导时延为小于一个采样周期的短时延,既可以是定常的也可以是时变的;随机丢包过程是具有普遍意义的任意丢包过程,其数字特征不必先验得到。运用Lyapunov方法,得到保证闭环网络控制系统渐进稳定的充分条件以及状态反馈控制器的设计方法。最后,通过仿真结果证明了方法的有效性。

The modeling, stability analysis and controller design problems of networked control systems with time-delay and stochastic packet - dropout process are studied. The considered network-induced time-delay is short time-delay which is shorter than the sampling period, and it can be constant or time-varying. The stochastic packet - dropout process is an arbitrary process in the general sense and its numerical characteristic need not be gained in advance. The sufficient conditions of the asymptotical of the close-loop networked control systems stability and the design methods of state feedback controller design are presented using by Lyapunov method, the design simulation result shows the validity of proposed design method.