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선형 홀센서를 이용한 정현파 엔코더의 DSP 구현

DSP Implementation of a Sinusoidal Encoder using linear Hall Sensor

  • 황정호 (숭실대학교 전기공학과) ;
  • 정찬수 (숭실대학교 전기공학과)
  • 투고 : 2011.07.29
  • 심사 : 2011.12.23
  • 발행 : 2012.02.01

초록

The linear encoder used in the BLAC driving circuit consists usually analog type sensor, and need signal transform from analog sinusoidal to digital one for application in the PWM algorithm that is used to control motor current. When the motor is driven in low speed, it is required many operations and higher quality DSP to convert the hole sensor signal to digital one with enough resolution. In this paper, the another method to convert that signal with enough resolution without calculation of sine function is proposed. This is very simple and have high resolution even if the motor is driving in low speed. To verify the proposed method, BLAC motor is used, and it is proved that the motor is tracking well the reference step signal in the low speed as well as in the high one.

키워드

참고문헌

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  6. Erwan Simon, "Implementation of a Speed Field Oriented Control of 3-phase PMSM Motor using TMS320F240" Texas Instrument Application Note, SPRA 588 February 1999.
  7. 김양배, 황정호, 정찬수,"저속 킥 스타트에서 brushless DC Motor 제어", 대한전기학회, 2010 대한전기학회 제41회 하계학술대회 2010.7, page: 1764-1765
  8. 황정호, 김양배, 정찬수,"BLDC모터를 위한 사인 엔코더 신호의 자동 보정", CICS 2010 정보 및 제어 학술대회논문집, 2010.10, page(s): 3-425

피인용 문헌

  1. Detection of Absolute Position for Magneto-Optical Encoder Using Linear Table Compensation vol.33, pp.12, 2016, https://doi.org/10.7736/KSPE.2016.33.12.1007