Abstract: The problem of robust H_∞ fault-tolerant control is investigated for a class unceitain Networked Control Syetem（NCS） with nodes partial failure. Based on Linear Matrix Inequality（LMI） techniques, and constructing a suitable Lyapunov Lyapunov-Krasovakii function, a suffcient conditon for NCS with robust H_∞fault-tolerant controller and the design approach of the controller are obtained. A simulation example is used to illustrate the effectiveness and the feasibility of the proposed approach.

Key words:  networked control syetem, uncertainty, nodes, partial failure, robust H_&infin, fault-tolerant control

摘要： 针对一类参数不确定的网络控制系统，在节点部分失效下的情况下，研究了鲁棒H_∞容错控制。通过构造适当的Lyapunov函数，并运用鲁棒H_∞控制理论和线性矩阵不等式方法（LMI），导出了网络控制系统鲁棒H_∞控制器存在的条件及具体方法。通过一个仿真算例证明了该方法的可行性和有效性。

关键词: 网络控制系统, 不确定性, 节点, 部分失效, 鲁棒H_&infin, 容错控制