The research on BLDCM control system based on DSP

With Brushless DC motor more and more widely used, this paper studied and optimized the closed-loop control system of current and velocity of BLDCM based on TMS320F2808 platform, and completed setting work mode of the drive, real-time debugging operating parameters and observing response curves via the communication with PC. This paper mainly studied the various modules of drive´s software, involving current sampling process, motor starting and commutation control, low-speed ripple restrain and RS232 communication. In order to decrease the overshoot and saturation, ameliorated integral anti-windup has been introduced into PID algorithm in the paper. Tuning the PID parameters was based on velocity error. Experimental results show that the system has reached a good tracking performance and static performance.