中文摘要：

研究了一类具有不确定时延的网络控制系统输出反馈保性能控制问题．将时延的不确定性建模为系统状态方程系数矩阵的不确定性，在输出反馈条件下，用状态观测器重构系统状态，将保性能控制问题转化为不确定离散系统的输出反馈鲁棒保性能控制问题．利用Lyapunov理论和矩阵不等式方法，得出了输出反馈保性能控制律的设计方法．仿真算例说明了设计方法的有效性．

英文摘要：

The problem of output feedback guaranteed cost control for a class of networked control systems with uncertain time-delay is studied. The uncertain time-delay is modeled as coefficient matrix uncertainties of system state equation, and a state observer is used to reconfigurate system states under output feedback condition. Moreover, the output feedback guaranteed cost control problem for NCSs（ Networked Control Systems） is translated to a robust guaranteed cost control problem for an output feedback uncertain discrete system. Lyapunov theory and matrix inequalities approach are used to obtain the design method of output feedback guaranteed cost control for NCS. Simulation example shows the validity of the proposed method.