High performance position controller for PMSM drives based on TMS320F2812 DSP

This work presents a high performance position controller for drives of permanent magnet synchronous motor (PMSM) using a TMS320F2812 DSP chip. Due to the new generation DSP (digital signal processor) having the characteristics of the fast computation (150 MIPS) and the complete peripheral circuits for motor drive, a fully digital controller of PMSM drives system, which includes a current vector control scheme, SVPWM generation, A/D conversion, coordinate transformation, QEP detection and an intelligent strategy, can be integrated and realized by software within a DSP chip. For increasing the performances of PMSM drives, an adaptive fuzzy controller constructed by fuzzy basis function and a parameter adjustable mechanism is proposed and applied in the position control loop to cope with the system uncertainty and to increase a fast tracking response. To confirm the effectiveness of the proposed system, an experimental system included by a PMSM, DSP control board, inverters, and rectifier has been set up and some experimental results have validated the theoretical ones.