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利用 Ｈ ∞控制理论设计鲁棒控制器，以提高感应电机的调速性能。首先分析了当转子电阻和负载转矩未知，转子磁通不可准确观测时，线性化后的感应电机数学模型的形式，得出了转速与磁通子系统间仍存在耦合的结论；然后用 Ｈ ∞鲁棒控制理论设计控制器，同时抑制两个子系统间的耦合影响及参数扰动，并在此基础上设计控制外环镇定跟随性能。仿真结果表明，该方法具有较好的跟随性及抗扰性。
H ∞ control theory is used to design a robust controller to improve the speed regulation performance of induction motor. Firstly, the mathematical model of the induction motor after linearization is analyzed when the rotor resistance and load torque are unknown, and the rotor flux can not be observed accurately. The conclusion that there is still coupling between the rotation speed and flux subsystem is obtained. Then, H ∞ robust control theory, the controller is designed, and the coupling influence between the two subsystems and the parameter perturbation are also restrained. On the basis of this, the design and control of outer ring stabilization and following performance are designed. Simulation results show that this method has better followability and immunity.