Permanent magnet synchronous servo-drive with state position controller

This paper presents a design approach of a position controller for permanent magnet synchronous motor (PMSM) servo-drive. Firstly the well know nonlinear mathematical model of PMSM is evaluated to a linear form by introducing new variables. The state space new model presented in rotates ortogonal reference frame is decupled in means of equation in d and q axis. An internal input model have been used to achive zero steady state error for step input and as well as disturbance rejection. The proposed control method is implemented and tested in a 0,6 kW PMSM drive (TMS320F2812-DSP). The experimental test results are consistent with our computer simulation test results and validate the high performance of proposed control method.