Title :
Precise speed control of Brushless DC Motors based on optimal control
Author :
Wu, Hao ; Sun, Xinya ; Ji, Yindong
Author_Institution :
Dept. of Autom., Tsinghua Univ., Beijing
Abstract :
This paper proposes a new technique of suppressing the torque ripple and speed fluctuation in brushless DC motors with trapezoidal-shaped back-EMF. Starting from the model of BLDCM, this paper analyzes the factors influencing the electromagnetic torque, and applies optimal control on the stator currents to realize the precise control of motor speed. Extensive simulation results have proved the superiority of the proposed method beyond the Kalman filter algorithm in a wide range of speed.
Keywords :
Kalman filters; angular velocity control; brushless DC motors; machine control; optimal control; Kalman filter algorithm; brushless DC motors; electromagnetic torque; optimal control; precise speed control; speed fluctuation; stator currents; torque ripple; trapezoidal-shaped back-EMF; AC motors; Brushless DC motors; DC motors; Fluctuations; Mathematical model; Optimal control; Stators; Torque; Velocity control; Zirconium; Brushless DC Motors; Optimal Control; Speed Fluctuation; Torque Ripple;
Conference_Titel :
Advanced Intelligent Mechatronics, 2008. AIM 2008. IEEE/ASME International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-2494-8
Electronic_ISBN :
978-1-4244-2495-5
DOI :
10.1109/AIM.2008.4601699
