permanent magnet synchronous motor chaotic control

What is it about?

This article focuses on realizing the chaos control of a permanent magnet synchronous motor by combining a pseudo-linear inverse system of the permanent magnet synchronous motor and synthetical sliding mode control.

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Photo by Bram Van Oost on Unsplash

Photo by Bram Van Oost on Unsplash

Why is it important?

The main contributions of the article are listed as follows: (1) aiming at the coupling characteristics of the PMSM stator current and rotating speed, the PMSM is decoupled into two independent pseudo-linear systems including a first-order d-axis current and a second-order rotating speed using the inverse system decoupling method, which makes the input and output of the PMSM system realize the linear decoupling and (2) the PMSM chaos control is realized by using the synthetical sliding mode method, which includes the SMC for the first-order d-axis current subsystem and the super-twisting sliding mode control (S-TSMC) for the second-order rotating speed subsystem. Simultaneously, the hyperbolic tangent function replaces the switching function to further eliminate chattering in the traditional SMC to improve the effect of the chaos control. Generally, the main novelty and superiority of the proposed control method are to decouple the stator current and rotating speed of the PMSM, implement high-order SMC in the PMSM speed loop, adopt the hyperbolic tangent function as the switching function to further eliminate the chattering in traditional SMC, and finally achieve a better chaos control of the PMSM.

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