Speed Tracking Control Of A Linear Permanent Magnet Synchronous Servo Motor Based On Feedback-Linearization

The background of the thesis is "research for the high precision and micro feed of the Linear Permanent Magnet Servo Motor System drives" (59875061), which is supported by National Natural Science Foundation of China.In the paper, A theory of feedback linearization control is introduced and used in the system of speed tracking for the AC Linear Permanent Servo Magnet Motor (LPMSM).The law how to design nonlinear feedback and speed tracking is also introduced ,and the stability of the closed loop system is shown by the way of Lyapunov stability theory, and it is also verified by a real-time implementation.Because the Linear Permanent Magnet Servo Motor (LPMSM) has avoided the effects of the mechanical transmission chairs from rotary motions to linear ones, and has intention electromagnetism thrust, lower cost ,small electrical time constant and rapid response etc.,so the LPMSM is more and more employed in the high-speeding , high-precision and micro-feed servo system .however , the control of these drives in the high-speeding and higher-speeding, high-precision and higher-precision is not an easy task ,due to their no linearity and coupling . this paper has researched problems based these nonlinear and according to the nonlinear dynamic mathematical model of three-phase AC linear permanent magnet synchronous servo motor ,the dynamic input-output mathematical model of the close-loop system of this motor is established with the method of the sate feedback linearization . Furthermore, through the linearization model, the control laws of the aped tracking and feedback is designed and so theobserver is designed and it can improve the velocity and accuracy of the speed-tracking under the condition which guaranteed the stability of the whole closed loop system. After a brief study of the theory of the nonlinear, the Function of Lyapunov is designed ,which provide enough testify for the theory. Finally, through the computer simulation research ,the results show that the feedback linearization method is simple and applicable , and the celerity , accuracy , and stability of the speed tracking system are achieved in the same time , the effect of the disturb is avoided.