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

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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A Study on the Dynamic Characteristics Improvement of Direct Drive Electro-mechanical Actuation System using Dynamic Force Feedback Control

동적 하중 되먹임 제어를 사용한 직구동 방식 전기기계식 구동장치시스템의 동특성 개선에 관한 연구

  • Lee, Hee-Joong (Korea Aerospace Research Institute) ;
  • Kang, E-Sok (School of Mechanical Engineering, Chungnam National University) ;
  • Song, Ohseop (School of Mechanical Engineering, Chungnam National University)
  • Received : 2016.11.29
  • Accepted : 2017.03.20
  • Published : 2017.04.01
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Abstract

In the control actuator system of a launch vehicle based on thrust vectoring, the interaction between electro-mechanical position servo and inertial load are combined with the dynamic characteristics of the flexible vehicle support to generate synthetic resonance. This occurred resonance is fed back to the attitude control system and can influence stability of launch vehicle. In this study, we proposed a simulation model to analyze synthetic resonance of electro-mechanical actuation system for thrust vector control and explained the results of simulation and test using dynamic force feedback control which improves dynamic characteristics of servo actuation system by reducing synthetic resonance.

발사체의 추력벡터제어를 위한 구동장치시스템에서 관성부하를 갖는 전기기계식 위치서보 시스템의 공진 특성과 유연한 기체구조체 지지부의 구조공진이 결합되어 합성공진이 발생한다. 이렇게 발생한 공진은 발사체의 자세제어시스템에 되먹임되어 자세안정성에 영향을 줄 수 있다. 본 논문에서는 발사체의 추력벡터제어를 위한 직구동 방식의 전기기계식 구동장치의 합성공진을 해석하기 위한 모델을 소개하고 합성공진 현상을 저감하여 구동기의 동특성을 개선하는 동적 하중 되먹임 제어기법의 해석 및 시험 결과를 기술하였다.

Keywords

Acknowledgement

Supported by : 한국항공우주연구원

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