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Proceedings Paper

A microcontroller-based sensorless brushless DC (BLDC) motor drive for areomodelling
Author(s): Long-han Cao; Tao Liu; Rui Li; Fan Wu
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Paper Abstract

A novel approach to back-EMF detection of sensorless brushless DC motor drive systems was proposed. Theoretical analysis of back-EMF sensing is presented, and indicates the back-EMF signal can be extracted for each floating phase whether the PWM is on or off time. As a result, the proposed method rejects the high frequency switching noise and no filtering. Moreover, it provides a highly accurate zero crossing point. This proposed sensing scheme is implemented into a microcontroller for a sensorless BLDC motor. The microcontroller has been successfully applied to the aeromodelling motor. The applied results verify the theoretical analysis and demonstrate that the microcontroller provide a good motor performance.

Paper Details

Date Published: 7 January 2008
PDF: 6 pages
Proc. SPIE 6794, ICMIT 2007: Mechatronics, MEMS, and Smart Materials, 679406 (7 January 2008); doi: 10.1117/12.784136
Show Author Affiliations
Long-han Cao, Chongqing Communication Institute (China)
Chongqing Univ. of Posts and Telecommunications (China)
Tao Liu, Chongqing Univ. of Posts and Telecommunications (China)
Rui Li, Chongqing Communication Institute (China)
Fan Wu, Chongqing Communication Institute (China)


Published in SPIE Proceedings Vol. 6794:
ICMIT 2007: Mechatronics, MEMS, and Smart Materials

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