DSP-based New On-line Dead Time Compensation Strategy of a PMSM Drive through Digital Signal Processing and Harmonic Component Extraction for a Robot Arm Application

Abstract

Abstract DSP-based on-line dead time compensation strategy of a permanent magnet synchronous motor (PMSM) drive through a signal processing and harmonic extraction for a robot arm application is proposed. The proposed scheme is based on monitoring the fifth-order harmonic component through the signal processing and harmonic component extraction. The proposed scheme does not require a periodic information of current for the harmonic calculation nor parameter information. Also, it gives a faster estimation performance than the conventional harmonic approach. The effectiveness of the proposed scheme is verified through the comparative simulations and experiments using DSP TMS320F28335.