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A Simple Fault Correction Method for Rotor Position Detection of Brushless DC Motor using a Latch Type Hall Effect Sensor  

Baik In-Cheol (Department of Computer Application Control, Kyonggi Institute of Technology)
Joo Hyeong-Gil (Department of Mechatronics Engineering, Korea Polytechnic University)
Publication Information
Journal of Power Electronics / v.5, no.1, 2005 , pp. 62-66 More about this Journal
Abstract
A simple fault correction method for rotor position detection of a brushless DC(BLDC) motor with trapezoidal back EMF(electromotive force) using a Hall effect latch unit is presented. The reason why the Hall effect latch unit does not operate properly during the startup of a BLDC motor is thoroughly explained. To solve this problem, a simple code change method and its hardware implementation issues are proposed and discussed.
Keywords
Hall effect sensor; rotor position detection; brushless dc motor; fault correction;
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  • Reference
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3 Hall Effect Latches User's Manual, Worcester, Allegro MicroSystems, Inc., 1995