The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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A Position Control of BLDC Motor in a Rail Guided System for the Un-maned Facility Security

무인 설비 감시용 레일 가이드 구동장치에서 BLDC 전동기의 위치 제어

  • Bae, Jong-Nam (Dept. of Mechatronics Engineering, Kyungsung University) ;
  • Lee, Dong-Hee (Dept. of Mechatronics Engineering, Kyungsung University)
  • Received : 2017.01.25
  • Accepted : 2017.02.20
  • Published : 2017.06.20
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Abstract

A low-cost BLDC motor with hall sensor is used to drive the position control of a facility security monitoring system in this paper. Low measurable frequency of the hall sensor signal in low-speed regions results in difficulty in obtaining accurate speed detection and position control. To improve system control performance, we propose a variable gain of position controller and stop mode control scheme according to the motor speed and error position with pre-set deceleration time. The proposed stop mode control scheme is activated around the stop position to forcibly move the BLDC motor to the stop position in low speed. In the proposed stop mode, the motor current is controlled by the actual speed with the reference rotating angle. The control performance of the proposed position control is verified through experiments at the actual rail guided facility security monitoring system.

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References

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