항공기용 이중화 구동장치의 Force-fighting 현상 개선 및 외란 제거 기법

다국어 초록 (Multilingual Abstract)

In the past decade, the drive units used in aircraft have been replaced by electro-mechanical actuators (EMA) in hydraulic actuators (HA). This is because EMA has advantages such as economic efficiency, energy efficiency, noise reduction, maintenance, and weight reduction compared to HA. In addition, parts used in aircraft are used in duplicate for safety. Unlike other components, force-fighting occurs when the drive is redundant. Although the problem does not occur in the beginning, if force-fighting continues, it will reduce the life of the component and cause fatigue failure. Therefore, force-fighting needs to be removed or improved for the stable operation of the aircraft. The force generated by force-fighting is assumed to be disturbance. In this paper, a Q-filter-based disturbance observer (DOB) and an extended state observer (ESO) are used. Simulation verification shows that both models improve the influence of force-filtering and external disturbance of Dual-Redundant Actuator. Q-filter-based DOB has the advantage of less error in observation of disturbance compared to ESO, and ESO has the advantage of being able to observe stable output and internal information including disturbance compared to Q-filter-based DOB.

목차 (Table of Contents)

• 제 1 장 서론 1
• 1-1. 연구의 배경 및 필요성 1
• 1-2. 연구의 목적 3
• 제 2 장 시스템 구성 5
• 2-1. 개별 구동장치 모델 설계 5
• 2-2. 이중화 구동장치 커플링 모델 6
• 제 3 장 포스 파이팅 제거기법 10
• 3-1. Q-filter 기반 DOB 설계 10
• 3-2. 확장상태관측기(Extended State Observer, ESO) 설계 13
• 3-3. 관측기의 이중화 구동장치 적용 설계 17
• 제 4 장 실험결과 및 비교 20
• 4-1. Q-filter 기반 DOB를 적용한 이중화 구동장치 성능 분석 20
• 4-2. ESO를 적용한 이중화 구동장치 성능 분석 38
• 4-3. 두 모델 비교 56
• 제 5 장 결론 59
• [ 참 고 문 헌 ] 61