Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Review of BLAC Motor and Drive Technology for Electric Power Steering of Vehicles

자동차용 EPS의 BLAC 모터 및 제어기술의 고찰

  • Cho, Kwan-Yuhl (Dept. of Control & Instrumentation Engineering, Chungju National University) ;
  • Kim, Hak-Wone (Dept. of Control & Instrumentation Engineering, Chungju National University) ;
  • Cho, Young-Hoon (Dept. of Electrical and Computer Engineering, Virginia Tech.)
  • 조관열 (충주대학교 제어계측공학과) ;
  • 김학원 (충주대학교 제어계측공학과) ;
  • 조영훈 (버지니아테크 전기및컴퓨터공학과)
  • Received : 2011.08.03
  • Accepted : 2011.09.08
  • Published : 2011.09.30
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Abstract

The Electric Power Steering (EPS) has been applied to the vehicles due to its better fuel efficiency, better steering feel, and the compact volume compared to the hydraulic power steering. The brushed PM (Permanent Magnet) DC motors had been adopted in most of the EPS systems until several years ago due to its easy control and a simple hardware configuration of the power converter, but nowadays the BLAC (Brushless AC) motor is becoming more popular for the EPS system because of its high efficiency and long lifetime. This paper reviews the configuration of the EPS system and the BLAC motor and drive technologies based on the papers published recently. The torque ripple reduction for steering feel and the fault detection algorithms for safety are also reviewed.

전기식 파워 스티어링(EPS)은 유압식 파워스티어링에 비해 연비가 높고 스티어링 느낌이 좋으며 체적이 작으므로 자동차에 많이 적용되고 있다. 몇 년 전까지 대부분의 EPS 시스템에는 제어가 쉽고 하드웨어 구조가 간단한 영구자석 DC 모터가 주로 적용되었으나 최근에는 효율이 높고 수명이 긴 BLAC 모터가 적용되고 있다. 본 논문에서는 최근에 발표된 논문들을 기초로 EPS 시스템의 구조 및 BLAC 모터와 제어기술에 대해 고찰한다. 또한 스티어링 느낌을 좋게 하기 위한 토크리플 저감 및 안전을 위한 고장검출 알고리즘에 대해서도 검토한다.

Keywords

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