(A) practical optimal guidance scheme under impact angle and terminal acceleration constraints충돌각 및 종말가속도 구속조건을 고려한 실용적인 최적유도기법 연구

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dc.contributor.advisorChoi, Hanlim-
dc.contributor.authorChi, Hyo-Seon-
dc.description학위논문(박사) - 한국과학기술원 : 항공우주공학과, 2021.2,[vi, 101 p. :]-
dc.description.abstractThis thesis proposes a practical optimal guidance law that can handle terminal angle and acceleration constraints, at the same time providing robustness against uncertainty in autopilot dynamics. Building upon a well-established linear-quadratic optimal guidance framework, we first derive an energy-minimizing guidance scheme that nullifies terminal acceleration, termed Optimal Guidance Law with Impact Angle and Terminal Acceleration constraints(OGL-IATA). Then, a practical modification to OGL-IATA is proposed to deal with the stability degradation of OGL-IATA due to unmodeled high-order autopilot dynamics. The modification primarily features feedback of pseudo-acceleration that is computed by passing the true acceleration signal through approximate missile dynamics-
dc.description.abstractthis simple modification is demonstrated to improve the stability margin of the guidance loop. Numerical examples on nonlinear engagement kinematics demonstrate the performance and the robustness characteristic of the proposed practical guidance scheme. The degree of freedom of optimal guidance design is extended by time-to-go weighted control energy cost function. The effects of autopilot dynamics error on the stability of guidance is analyzed through an analytical method, and the performance is compared by numerical nonlinear simulations.-
dc.subjectOptimal guidance law▼aTerminal acceleration constraint▼aseudo acceleration feed-back▼aTime-to-go weighted cost function▼aDynamics error analysis-
dc.subject최적유도기법▼a종말가속도 구속조건▼a의사가속도 피드백▼aTime-to-go 가중함수▼a다이나믹스 오차분석-
dc.title(A) practical optimal guidance scheme under impact angle and terminal acceleration constraints-
dc.title.alternative충돌각 및 종말가속도 구속조건을 고려한 실용적인 최적유도기법 연구-
dc.description.department한국과학기술원 :항공우주공학과,-
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