한국항행학회논문지 (Journal of Advanced Navigation Technology)

  • 제28권5호
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  • Pages.623-631
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  • 2024
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  • 1226-9026(pISSN)
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  • 2288-842X(eISSN)
한국항행학회 (The Korean Navigation Institute)
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저추력 추진기를 활용한 초소형위성체계 배치형상 획득을 위한 제어 방법론

Control Methodology for Acquiring Small Satellite Constellation Configurations Using Low-Thrust Propulsion

  • 김하은 (위성체계연구소, LIG Nex1(주)) ;
  • 김상일 (세종대학교 우주항공시스템공학부) ;
  • 이성섭 (세종대학교 우주항공시스템공학부)
  • Ha-Eun Kim (Satellite Research Center, LIG Nex1, Co., Ltd.) ;
  • Sang-Il Kim (Aerospace Systems Engineering, Sejong University) ;
  • Soung-Sub Lee (Aerospace Systems Engineering, Sejong University)
  • 투고 : 2024.08.26
  • 심사 : 2024.10.29
  • 발행 : 2024.10.31
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초록

현재 우리 군은 북한의 위협뿐만 아니라 다양한 전방위 위협에 신속하게 대응할 수 있는 지휘 통제 체계를 구축하기 위해 초소형위성체계 사업을 추진하고 있다. 본 논문에서는 저추력의 전기추진시스템인 홀추력기를 사용하여 초소형 군집위성 배치 형상을 획득하기 위한 비선형 제어기법을 제시한다. 제어기법은 일반적인 리야프노프(Lyapunov)의 제어 이론의 적용과 전기추진기의 on-off 제어를 위한 분석적 해법에 의해 구해지며 궤도 6요소 중 장반축만을 제어하여 위성군의 궤도 형상을 효과적으로 배치할 수 있는 기법이다. 본 연구에서 개발된 제어기법은 초소형위성체계에 적용하기위해 안정성을 검증하고 결과를 분석한다.

Currently, the Korean military is promoting a small satellite system project to establish a command and control system that can quickly respond to various threats from all directions, not only from North Korea. In this paper, we present a nonlinear control law to acquire the geometry of a small cluster satellite deployment using a low-thrust electric propulsion system, the Hall thruster. The control law is obtained by applying the general Lyapunov's control theory and analytical solution for the on-off control of the electric thruster, and it is a technique that can effectively deploy the orbital configuration of the satellite constellation by controlling only the semi-major axis of the six elements of the orbit. In this study, the stability of the developed control law is verified and the results are analyzed for application to a very small satellite system.

키워드

과제정보

본 연구는 2023년도 K-모델 임무성능분석도구 과제의 일환으로 수행된 연구로서, 관계부처에 감사드립니다.

참고문헌

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