Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Design of Rollover Prevention Controller Using Game-Theoretic Approach

미분게임 이론을 이용한 차량 전복 방지 제어기 설계

  • Yim, Seongjin (Dept. of Mechanical and Automotive Engineering, Seoul Nat’l Univ. of Sci. and Tech.)
  • 임성진 (서울과학기술대학교 기계자동차공학과)
  • Received : 2013.04.23
  • Accepted : 2013.09.11
  • Published : 2013.11.01
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Abstract

This study presents an approach for designing a vehicle rollover prevention controller using differential game theory and multi-level programming. The rollover prevention problem can be modeled as a non-cooperative zero-sum two-player differential game. A controller as an equilibrium solution of the differential game guarantees the worst-case performance against every possible steering input. To obtain an equilibrium solution to the differential game with a small amount of computational effort, a multi-level programming approach with a relaxation procedure is used. To cope with the loss of maneuverability caused by the active suspension, an electronic stability program (ESP) is adopted. Through simulations, the proposed method is shown to be effective in obtaining an equilibrium solution of the differential game.

본 논문에서는 미분게임 이론과 다수준 계획법을 이용하여 차량 전복 방지 제어기를 설계하는 방법을 제안한다. 차량 전복 방지 문제는 비협조적 제로섬 2 인 미분게임으로 정식화된다. 미분게임의 균형해로 얻어지는 제어기는 모든 가능한 조향 입력에 대해 최악의 성능을 보장한다. 적은 계산량으로 미분 게임의 균형해를 찾기 위해 완화 과정을 가지는 다수준 계획법을 이용한다. 차량의 롤 운동을 억제하기 위해 능동 현가장치를 사용하면 차량의 횡방향 안정성이 상실되므로 이를 방지하기 위해 자세제어장치(ESP)를 이용한다. 시뮬레이션을 통해 제안된 방법이 미분게임의 균형해를 찾는데 효과적임을 보이고 설계된 제어기가 차량의 전복을 방지함을 보인다.

Keywords

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