Speed Regulation of a Small BLDC Motor Using Genetic-Based Proportional Control

This paper presents the speed regulation scheme of a small brushless dc motor (BLDC motor) with trapezoidal back-emf consideration. The proposed control strategy uses the proportional controller in which the proportional gain, kp, is appropriately adjusted by using genetic algorithms. As a result, the proportional control can perform well in order to compensate the BLDC motor with load disturbance. This confirms that the proposed speed regulation scheme gives satisfactory results.

• S. Poonsawat
• T. Kulworawanichpong

• BLDC motor
• proportional controller
• genetic algorithms.

[1] Y. S. Jeon, H. S. Mok, G. H. Choe, D. K. Kim, and J. S. Ryu, "A New
Simulation Model of BLDC Motor With Real Back EMF Waveform",
Computers in Power Electronics, 2000. COMPEL 2000. The 7th
Workshop on, pp. 217-220, July 2000.
[2] Lei Hao and Hamid A. Toliyat, "BLDC Motor Full Speed Range
Operation Including the Flux - Weakening Region", Industry
Applications Conference, 2003. 38th IAS Annual Meeting. Conference
Record of the, vol. 1, pp. 618-624, October 2003.
[3] Joon-Ho Lee, Tae-Sung Kim, and Dong-seok Hyun, "A study for
Improved of Speed Response Characteristic in Four-Switch Three-Phase
BLDC Motor", Industrial Electronics Society, 2004. IECON 2004. 30th
Annual Conference of IEEE, vol. 2, pp. 1339-1343, November 2004.
[4] Quan Jiang, Chao Bi, and Abdullah, "An Effective Approach to Predict
Performances of High Speed BLDC Motor in Hard Disk Drives",
Industrial Electronics Society, 2003. IECON '03. The 29th Annual
Conference of the IEEE, vol.3, pp. 2120-2125, November 2003.
[5] Hamid A. Toliyat and Steven Campbell, "DSP-Based
Electromechanical Motion Control", CRC Press LLC, America, 2004.
[6] Seok-Myeong Jang, Han-Wook Cho, and Sang-Kyu Choi, "Design and
Analysis of a High-Speed Brushless DC Motor for Centrifugal
Comprresser", Magnetics, IEEE Transactions on, Vol. 43, pp. 2573-
2575, June 2007.
[7] S.O. Orero and M.R. Irving, "Economic dispatch of generators with
prohibited operating zones: a genetic algorithm approach", Generation
Transmission and Distribution, IEE Proceedings, Volume 143, Nov.
1996, pp.529-534.
[8] D.E. Goldberg, and D. Edward, Genetic Algorithms in Search,
Optimization and Machine Learning, Wiley, 1989.
[9] The MathWorks Inc., Genetic Algorithms and Direct Search
TOOLBOX, CD-ROM Manual, 2004.