Research on the AC servo system of CNC machine tools based on sliding mode variable structure theory

The present paper mainly aims at the numerically-controlled machine tool AC servomechanism,i.e. the permanent magnetism synchronous motor AC servomechanism´s main feature, the application slip form changes the structure control strategy, improved the convention control policy to satisfy the request which with difficulty the high performance permanent magnetism synchronous machine actuated, enhanced need system´s anti-jamming and robustness, tried hard to enhance overall system´s performance.