Heting Wen
ABSTRACT
In order to minimize the torque and maintain stability of the brushless DC motor (BLDCM) dual closed-loop system as much as possible, and improve the overall stability and response speed of the system, an improved method based on velocity loop is proposed to replace the conventional PI control with sliding mode control (SMC), aiming at the shortcomings of the traditional PI control, such as poor precision and difficult to eliminate the dynamic error of the system. Through modeling and experiments, it has been proven that sliding mode control can make the system get smaller torque ripple and keep it stable, accelerate the system response speed, and improve the overall stability of the system.
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