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对于矢量控制的交流伺服系统，根据离散滑模控制理论和模糊控制理论，设计了一种离散模糊滑模控制器，即在离散滑模控制器后加一个积分环节再与模糊控制器相结合，有效地削弱了单纯滑模变结构控制系统的“抖振”。仿真实验结果表明由该离散模糊滑模控制器构成的交流位置伺服系统，具有良好的快速性和抗负载扰动、参数摄动的鲁棒性．
For vector control AC servo system, a discrete fuzzy sliding mode controller is designed according to discrete sliding mode control theory and fuzzy control theory. That is to say, an integral link is added after discrete sliding mode controller and then combined with fuzzy controller. Effectively weakening the “chattering” of the simple sliding mode variable structure control system. Simulation results show that the AC position servo system composed of the discrete fuzzy sliding mode controller has good fastness and robustness against load disturbances and parameter perturbations.