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在考虑到控制器饱和情况下,通过对单输入单输出闭环系统各种故障的仿真研究及结果分析,提出了把控制器的输出残差和传感器的输出残差结合起来检测故障。这种方法可以提高系统检测故障的性能,仿真结果验证了该方法的有效性。
Taking into account the controller saturation, through the simulation and analysis of various faults of the single-input single-output closed-loop system, it is proposed to detect the fault by combining the controller’s output residual and the sensor’s output residual. This method can improve the system performance of fault detection, the simulation results verify the effectiveness of the method.