Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Flutter Suppression of a Flexible Wing using Sliding Mode Control

슬라이딩 모드 제어기법을 이용한 유연날개의 플러터 억제

  • Lee, Sang-Wook (Korea Aerospace Research Institute) ;
  • Suk, Jinyoung (Department of Aerospace Engineering, Chungnam National University)
  • Received : 2013.02.13
  • Accepted : 2013.05.24
  • Published : 2013.06.01
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Abstract

This paper presents the design of an active flutter suppression system for flexible wing using sliding mode control method. The aerodynamic force generated by the motion of a flexible wing control surface is utilized as control force. For this purpose, aeroservoelastic model is formulated by blending aeroelastic model, control surface actuator model, and gust model. A sliding mode controller is designed for active flutter suppression on the aeroservoelastic model in conjunction with Kalman filter that estimates the system states based on the measured output. The performance of the designed controller is demonstrated via numerical simulation for the representative flexible wing model.

본 논문에서는 항공기 유연날개의 플러터 억제를 위한 능동 제어시스템을 슬라이딩 모드 제어기법을 이용해 설계하였다. 제어력으로는 유연날개 뒷전 조종면 움직임으로 발생하는 공기력을 이용하였으며, 이를 위해 공탄성 모델, 조종면 작동기 모델, 돌풍 모델로 구성되는 서보 공탄성 모델링을 수행하였다. 플러터 억제를 위한 조종면 제어시스템은 슬라이딩 모드 제어기와 측정값을 이용해 상태 변수를 추정하는 칼만 필터를 조합해 구성하였으며, 수치 시뮬레이션을 통해 유연날개 모델에 대한 플러터 억제 효과를 확인하였다.

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References

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