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Speed Control of High Speed Miniature BLDCM Based on Software PLL  

Lee, Bong-Hee (경성대 전기전자메카트로닉스)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.14, no.2, 2009 , pp. 112-119 More about this Journal
Abstract
This paper presents a PLL(Phase Lock Loop) approach for effective speed and torque control of high speed miniature BLDCM(Brushless DC Motor) using hall sensor. The proposed speed control method based on PLL uses only a phase shift between reference pulse signal according to speed reference and actual pulse signal from hall sensor. It doesn't use any speed calculation, and calculates a direct current reference from phase shift. The current reference is changed to reduce the phase shift between reference and actual pulse. So the actual speed can keep the reference speed. The proposed control scheme is very simple but effective speed control is possible. In order to obtain a smooth torque production, the reference current is changed using acceleration and deceleration slope. The proposed control scheme is verified by experimental results of the 50W, 40,000[rpm] high speed miniature BLDCM.
Keywords
High speed miniature motor; BLDCM; Software PLL; Speed control;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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