研究了轧机厚控系统时滞相关鲁棒容错控制问题.轧机厚控系统实际是一个线性不确定时滞系统,考虑其可能发生的执行器增益故障,利用Lyapunov-Krasovskii泛函方法和线性矩阵不等式,给出了厚控系统时滞相关鲁棒容错控制器存在的充分条件,并给出了控制器的设计方法.所获得的控制器不仅能使故障系统鲁棒稳定,并且能达到给定的H_∞性能指标.最后通过仿真实例验证了设计方法的有效性. The problem of delay-dependent robust fault-tolerant control of thick-gauge control system is studied.The thick-gauge control system of rolling mill is actually a linear time-delay system with uncertainties. Considering its possible actuator gain failure, Lyapunov-Krasovskii functional method and linear matrix inequality , The sufficient conditions for the existence of delay-dependent robust fault-tolerant controller in thick control system are given and the design method of the controller is given. The controller not only makes the faulty system robust and stable but also achieves the given H_∞ performance index.Finally, the simulation results show the effectiveness of the design method.