Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Integral Sliding-based Dynamic Control Method using Genetic Algorithm on an Omnidirectional Mobile Robot

전방향 모바일 로봇에서 유전알고리즘을 이용한 적분 슬라이딩 기반 동적 제어 기법

  • Park, Jin-Hyun (Department of Mechatronics Engineering, Gyeongsang National University) ;
  • Choi, Young-Kiu (Department of Electrical Engineering, Pusan National University)
  • Received : 2021.08.18
  • Accepted : 2021.09.27
  • Published : 2021.12.31
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Abstract

Omnidirectional mobile robots can be mobile in any direction without changing the robot's direction, making them easy to apply in many applications and providing excellent maneuverability. Omnidirectional mobile robots have non-linear dynamic components such as friction, making them difficult to model accurately. In this paper, we linearize the mobile robot system using the mobile robot's inverse dynamics and integral sliding mode control method to remove these nonlinear components. And the position and velocity gains are optimized using a genetic algorithm to realize the optimal performance of the proposed system control method. As a result of the performance evaluation, the genetic algorithm's control method showed superior performance than the control method with an arbitrary gain. And the proposed inverse dynamic and integral sliding mode control method can be applied to other control methods. It can be beneficial for designing a linear control system.

전방향 모바일 로봇은 로봇의 방향을 바꿀 필요 없이 어떤 방향으로든 움직일 수 있어 여러 응용 분야에서 적용이 쉽고 뛰어난 기동성을 제공한다. 전방향 모바일 로봇은 마찰과 같은 비선형 동적 성분을 가지고 있어 정확히 모델링하기에 어렵다. 본 연구에서는 이러한 비선형 성분을 제거하기 위하여 모바일 로봇의 역 다이내믹과 적분 슬라이딩 모드 제어기법을 사용하여 모바일 로봇 시스템을 선형화하고, 제안된 제어기법의 최적 성능을 구현하기 위하여 유전알고리즘을 사용하여 위치 및 속도 이득을 최적화한다. 성능 평가 결과 유전알고리즘을 적용한 제어기법이 임의의 이득을 갖는 제어기법보다 뛰어난 성능을 나타내었다. 그리고 제안된 역 다이내믹과 적분 슬라이딩 모드 제어기법은 다른 제어기법에서도 적용될 수 있으며, 특히 선형제어시스템 설계에 유용하게 사용될 수 있다.

Keywords

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