网络控制系统的鲁棒保性能控制

针对单包传输、有界时变通信时延的网络控制系统,构建了一类描述网络控制系统的离散不确定时滞系统模型.为克服模型中随机网络通信时延对系统的影响,将时延不确定性转化为闭环系统参数的摄动;在此基础上,运用鲁棒控制理论、Lyapunov稳定性原理提出了网络控制系统鲁棒保性能控制律存在条件,并给出了设计网络控制系统鲁棒保性能状态反馈控制器时求解线性矩阵不等式的方法.

Robust guaranteed cost control for the networked control systems

By means of the Lyapunov method and the robust control theory,a robust guaranteed cost control appproach is presented for the networked control systems(NCS),which is of the single-packet transmission and the bounded random communication time-delay.The NCS is modeled as a discrete uncertain time-delay control system.The effect of the random communication time-delay on the systems is converted to the unknown bounded uncertain parameter disturbance.A sufficient condition for the existence of the robust guaranteed cost control law for the systems is proved,and the design of the robust guaranteed cost state feedback controller for the NCS is solved by a set of linear matrix inequalities.Finally,a numerical example shows the effectiveness of the proposed methed.