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한국항공우주학회지 = Journal of the Korean Society for Aeronautical & Space Sciences, v.46 no.8, 2018년, pp.639 - 651
목성훈 (Korea Advanced Institute of Science and Technology) , 방효충 (Korea Advanced Institute of Science and Technology) , 김희섭 (Korea Aerospace Research Institute)
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An analytical solution to generate attitude command profile for agile spacecraft is proposed. In realistic environment, obtaining analytical minimum-time optimal solution is very difficult because of following constraints-: 1) actuator saturation, 2) flexible mode excitation, 3) uplink command bandw...
| 핵심어 | 질문 | 논문에서 추출한 답변 |
|---|---|---|
| 고기동 위성의 장점은 무엇인가? | 위성 기동성(agility)은 위성이 자세(attitude)를 얼마나 빠르게 바꿀 수 있는지를 나타내는 지표이다[1]. 고기동 위성은 저기동 위성에 비해 더 많은 지상표적을 같은 시간동안 촬영할 수 있다[2]. 상업용/군용 위성 등 다양한 용도로 고기동 위성이 개발/운용되고 있다. | |
| 위성 기동성이란 무엇인가? | 최근 고기동 위성(agile satellite)에 대한 소요가 증대되고 있다. 위성 기동성(agility)은 위성이 자세(attitude)를 얼마나 빠르게 바꿀 수 있는지를 나타내는 지표이다[1]. 고기동 위성은 저기동 위성에 비해 더 많은 지상표적을 같은 시간동안 촬영할 수 있다[2]. | |
| 해석적인 자세명령 해를 구하려는 이유는? | 따라서 앞서 소개한 수치최적 기반 기법들을 적용하기 어렵다. 해석 해를 유도하고자 하는 이유는 1) 자세명령생성 기법의 onboard 자동화나 2) on-ground 생성 시 원격명령 데이터크기를 줄이기 위함이다(최소명령생성 관점). 또한, 앞선 연구들은 다음과 같은 제한조건들[18]에 대한 통합된 고려가 없었다: 1) 구동기 성능, 2) 토크명령 대역폭, 3) 원격명령 데이터크기. |
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