Sliding Mode Control for Permanent Magnet Synchronous Motors with Asymmetric Air Gaps and Chaos Control

In this technical article, we conduct an in-depth exploration of sliding mode control and chaos control methodologies for permanent magnet synchronous motors (PMSM) featuring asymmetric air gaps. Our discussion begins with fundamental principles and distinctive characteristics of non-uniform air gap PMSMs, providing essential background for understanding advanced control strategies. We then comprehensively analyze sliding mode control theory and chaos control mechanisms, including implementation approaches such as reaching law design and Lyapunov stability analysis. From a practical implementation perspective, we examine how to structure control algorithms using MATLAB/Simulink frameworks, detailing key functions like sliding surface definition and chattering suppression techniques. The comparative analysis evaluates performance trade-offs between robustness and control precision. Finally, we demonstrate practical application methodologies for integrating these control strategies into non-uniform air gap PMSM systems, focusing on performance enhancement and efficiency optimization through code-based implementations. Readers will gain comprehensive knowledge of sliding mode and chaos control applications for specialized PMSM configurations, establishing a solid foundation for future research and practical engineering applications.