关键词: 无刷直流电机, 离线整定, 电压前馈补偿, 超前角补偿, 竞速车模

Abstract: To address the control challenges of brushless direct current motor used in racing RC car models under operating conditions such as battery-voltage fluctuations, high-speed operation, and limited controller computational resources,this paper proposes an optimized motor control method based on an offline tuning strategy. In the offline stage,the proposed method completes the design of the space vector pulse width modulation parameter table, the characterization of input-voltage compensation,and the calibration of the high-speed phase-advance angle to generate the corresponding control parameters. In the online stage, sinusoidal drive and feedforward compensation are implemented with extremely low computational cost. Experimental results show that the proposed method effectively improves output consistency under voltage disturbances,enhances operating efficiency under high-speed conditions,and reduces motor temperature rise.

Key words: brushless direct current motor, offline tuning, voltage feedforward compensation, phase-advance angle compensation;RC car models