Please use this identifier to cite or link to this item: https://doi.org/10.1109/TMAG.2005.851841
Title: A new phase-delay-free method to detect back EMF zero-crossing points for sensorless control of spindle motors
Authors: Jiang, Q.
Bi, C. 
Huang, R.
Keywords: Brushless dc motors
Hard disk drives
Rotor position detection
Sensorless control
Spindle motors
Issue Date: Jul-2005
Source: Jiang, Q., Bi, C., Huang, R. (2005-07). A new phase-delay-free method to detect back EMF zero-crossing points for sensorless control of spindle motors. IEEE Transactions on Magnetics 41 (7) : 2287-2293. ScholarBank@NUS Repository. https://doi.org/10.1109/TMAG.2005.851841
Abstract: This paper introduces a new rotor position detecting method for the sensorless control of spindle motors in hard disk drives. The method applies a digital filtering procedure to identify the true and false zero-crossing points of phase back electromotive forces, the latter of which are caused by the terminal voltage spikes due to phase commutations. The proposed method is phase-delay free and independent of motor parameters. It is especially suitable for high-speed sensorless brushless dc motors. We used the method to drive many kinds of spindle motors for different hard disk drives. The experimental results confirmed the effectiveness of the proposed method in a wide speed range. © 2005 IEEE.
Source Title: IEEE Transactions on Magnetics
URI: http://scholarbank.nus.edu.sg/handle/10635/54541
ISSN: 00189464
DOI: 10.1109/TMAG.2005.851841
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