Research on PMSM Vector Control with Improved Exponential Approaching Law Sliding Mode Controller
Sliding mode control is widely used in high-precision speed regulation of permanent magnet synchronous motors due to its excellent control performance.When using sliding mode control to design a speed loop controller for permanent magnet synchronous motor vector control,the traditional exponential approaching law sliding mode controller will lead to motor chattering if the parameters are not selected properly when the system is close to the sliding mode surface.To address this issue,an improved exponential approaching law is designed,which makes the system state approach the sliding mode surface at a slower speed without affecting the system's speed,resulting in better steady-state performance.Simulation experiments at different given speeds have demonstrated the effectiveness of the proposed improved algorithm.
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