Abstract
Aiming at the problem that the dynamic performance of the system is reduced due to the nonlinear coupling between the current and the speed of the Hybrid Excitation Synchronous Motor, the Feedback Linearization Control algorithm is proposed to realize the dynamic decoupling of the current. Applying the feedback linearization theory, the expressions of the coordinate transformation matrix and the feedback control law of the system are derived, and the fully decoupled linear model of the Hybrid Excitation Synchronous Motor is obtained. Based on the linearization model, the integral sliding mode surface and the exponential approach law are selected to design the Sliding Mode controller to solve the shortcomings of the Feedback Linearization Control algorithm which rely on the accurate mathematical model. Compared with the traditional PI control algorithm, the results show that the proposed Feedback Linearized Sliding Mode Variable Structure Control algorithm improves the dynamic response and reduces the torque and current ripple when the load disturbance.
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