It is very important to accurately detect rotor position and speed in brushless direct current motor (BLDCM). Aiming at BLDCM which drives the magnetic suspended reaction flywheel (MSRFW), a novel scheme to estimate the low speed of the BLDCM based on Hall sensors and Kalmam fliter is presented. The average speed over the previous sector is achieved according to the outputs of the three hall sensors, then rotor position of the next sector is computed at the sampling time. The electrical angle calculated can be used to estimate the transient speed with Kalman filter equation. Simulation and experiment show that the proposed method is valid.

Date Published: 13 October 2008
PDF: 8 pages
Proc. SPIE 7129, Seventh International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration, 71292K (13 October 2008); doi: 10.1117/12.807726

Published in SPIE Proceedings Vol. 7129:
Seventh International Symposium on Instrumentation and Control Technology: Optoelectronic Technology and Instruments, Control Theory and Automation, and Space Exploration
Jiancheng Fang; Zhongyu Wang, Editor(s)