Scalable Observer Bandwidth Based Active Disturbance Rejection Control of Brushless DC Motor

摘要

A brushless DC motor (BLDCM) is a typical nonlinear and strong coupling plant. Unknown, complex, and time-varying external disturbances make the control of BLDCM be a big challenge. PID control, passive receiving tracking errors, cannot satisfy the requirements of high-precision speed control. To address it, a scalable observer bandwidth based active disturbance rejection control (SOADRC) is proposed. By adjusting observer bandwidth, high-precision speed control can be achieved. A numerical model of BLDCM is built to verify the SOADRC. Simulation results show that SOADRC is able to get better speed control accuracy.