지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 김인걸
- 발행연도
- 2016
- 저작권
- 충남대학교 논문은 저작권에 의해 보호받습니다.
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The UAV’s wing has high aspect ratio that is suitable for the high altitude and long endurance. Knowing the real-time deformation of wing structure in flight, it can be utilized in structural health and loading status monitoring, improvement of control effectiveness and extraordinary vibration phenomena using displacement-strain relationship. In this paper, nonlinear displacement prediction algorithm was developed for prediction of large structural deflection in flight. The algorithm was validated through the comparison with finite element analysis results and also experimental results for several large tip displacements of cantilever beam. The predicted displacements using strains are agreed well with the measured values from laser displacement sensor.
Array antenna embedded in wing skin was deformed by structural deformation caused by the aerodynamic and inertial forces. To perform the performance monitoring of the array antenna by the structural deformation, the prediction of antenna radiation pattern is required. In this paper, the deformation of high aspect ratio structures was estimated using the nonlinear displacement prediction algorithm, the radiation pattern of 1×8 array antenna was predicted by conformal array antenna theory using the displacement and slope in the position of array antenna. Structural test and antenna test were performed to verify the results of analysis, respectively. The test results for the deformation of high aspect ratio structure and the radiation pattern of array antenna are agreed well with the simulation results.
Array antenna embedded in wing skin was deformed by structural deformation caused by the aerodynamic and inertial forces. To perform the performance monitoring of the array antenna by the structural deformation, the prediction of antenna radiation pattern is required. In this paper, the deformation of high aspect ratio structures was estimated using the nonlinear displacement prediction algorithm, the radiation pattern of 1×8 array antenna was predicted by conformal array antenna theory using the displacement and slope in the position of array antenna. Structural test and antenna test were performed to verify the results of analysis, respectively. The test results for the deformation of high aspect ratio structure and the radiation pattern of array antenna are agreed well with the simulation results.
목차
1. 서 론 11.1 연구 배경 및 필요성 11.2 연구 동향 81.3 연구 목적 및 내용 102. 변형률 기반의 구조 대변형 예측 122.1 선형 변위 예측 이론 122.2 비선형 변위 예측 알고리즘 162.3 변형률 보정 212.4 기하학적 비선형성을 고려한 변위 예측 253. 구조 대변형 해석 및 실험 273.1 비선형 변위 예측 알고리즘의 검증 273.2 수치해석적 검증 303.3 변위 예측 알고리즘의 실험적 검증 594. 변위 정보를 이용한 어레이 안테나 방사패턴 수치 해석 704.1 어레이 안테나 방사패턴 해석 이론 704.2 예측 변위를 이용한 어레이 안테나의 성능 해석 735. 결 론 80참고문헌 82Abstract 88
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