The Adaptive Inverse Control Strategy Research of Servo System for Permanent-Magnet Synchronous AC motor

This paper brings forward Servo System for Permanent-Magnet Synchronous AC motor based on adaptive inverse control to improve it's position control precision. The system's control structure adopts three closed loop including position, velocity and current. The velocity and current loops adopt the maximum torque/current control strategy based on vector control. This strategy figures out the current of "dq" axis under the condition of maximum torque using the torque equations and vector control relation and achieves the maximum torque/current control based on vector and insures the velocity control performance. The position loop adopts adaptive inverse control strategy based on the idea applying inverse control and adaptive control to assign signal. This control strategy deals with assign signal and interference signal respectively and eliminate noise effect on position output radically and solves the problem of high performance control of AC servo-system preferably.