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考虑回热循环微型燃气轮机(简称微燃机)控制系统中参数扰动的问题,基于微燃机通用数学模型,建立滑模控制器来增强微燃机系统的普棒性和减小参数扰动对控制器的影响.针对微燃机系统长期高温运行导致的燃料调节器故障,构建滑模观測器检测故障的发生.为了保证在确诊突变故障发生后,所设控制器仍能有较好的控制效果,提出了基于滑模变结构理论的容错控制策略.仿真结果验证了所提出的微燃机控制策略在参数扰动和突变故障时都能有较好的控制效果.“,”Against the parameter perturbation issue of control of recuperative cycle micro turbines, based on the generality of the micro turbine mathematical model, a sliding mode controller is established to enhance the robustness of the micro turbine system and decrease the influence of parameter disturbances on the controller. Considering the long-term high temperature operation of the micro turbine system may lead to the failure of the fuel regulator, a sliding mode observer is constructed to detect the occurrence of the above faults. In order to ensure that after the failure diagnosis of mutations, the controller can still have a good control effect, this paper puts forward the fault-tolerant control strategy based on the sliding mode variable structure theory. The results of simulation prove that the micro turbine has a good control effect at the moment of mutation of failure and in the absence of failure.