Speed Adaptive Backstepping Control for Specified Position Tracking of Permanent Magnet Synchronous Motor Based on Load Estimation

With the development of modern industry innovation for permanent magnet synchronous motor (PMSM) with fast, accurate and stable servo positioning function, the traditional three closed loop PID control is difficult to meet the fast response speed, position of high precision and strong ability to resist disturbance in the process of industrial control, and it has the disadvantage of many adjustment parameters and uncontrollable speed in position control process. Due to these problems, this paper puts forward backstepping control and adaptive control method of PMSM position servo system. The method reduces number of control parameters in the system control, and can quickly adjust according to the load change, it can increase the degree of a speed control and improve the flexibility and reliability of the position control in order to eventually realize the PMSM servo position on the premise of accurate positioning. Simulation model is built to verify the effectiveness and feasibility of the system design. The system has better position tracking ability and anti-interference ability in the case of continuous and fixed positions.