서지주요정보
실시간 최적 지형 추종 시스템 = On-line optimal terrain tracking system
서명 / 저자 실시간 최적 지형 추종 시스템 = On-line optimal terrain tracking system / 이성만.
저자명 이성만 ; Lee, Sung-Mhan
발행사항 [대전 : 한국과학기술원, 1990].
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

8000300

소장위치/청구기호

학술문화관(문화관) 보존서고

DAE 9004

휴대폰 전송

도서상태

이용가능

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반납예정일

초록정보

An optimal control law was suggested for on-line tracking in the terrain following. To circumvent difficulties arising from the nonlinearity of the flight dynamics and the boundedness of realistic control inputs, the optimal decision strategy (ODS), which is a pointwise optimization technique, was employed. The flight vehicle dynamics was cast into the linear form with respect to the control inputs to apply the ODS technique to the present terrain following problem. The terrain following problem when formulated in terms of Mach number and flight path angle belongs to the case that the number of the state variables is larger than that of the control variables. A general form of the desired velocity command for this case was derived. With the desired velocity command, the optimal control law was obtained in a closed form and the stability of the system was examined. The desired trajectory necessary to implement the optimal control law was planned based on constant energy assumption. The control strategy based on the Mach number and flight path angle formulation has a drawback in the sense that the height tracking error can be hardly reduced when subjected to ill posed path or numerical errors. This situation can be remedied by restating the vehicle dynamics in terms of Cartesian velocity components. An optimal control law and the desired velocity command for the transformed system were given. The proposed optimal control law guaranteed that height tracking error was always reduced. To demonstrate the feasibility and effectiveness of the proposed on-line optimal tracking algorithm, numerical simulations were carried out. The results of the simulation confirmed that the suggested on-line optimal tracking algorithm was a good alternative for the terrain following.

서지기타정보

서지기타정보
청구기호 {DAE 9004
형태사항 xiv, 121 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : 1, 비행체의 3차원 운동방정식 유도. - 2, Primal-fual method 를 사용한 최적 제어식의 유도. - 3, 요구 비행궤적 계획. - 4, 지형추종에서의 최적 제어 관계식의 계산
저자명의 영문표기 : Sung-Mhan Lee
지도교수의 한글표기 : 변증남
공동교수의 한글표기 : 박승오
지도교수의 영문표기 : Zeung-Nam Bien
공동교수의 영문표기 : Seung-O. Park
학위논문 학위논문(박사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 63-67
주제 Real-time control.
All terrain vehicles.
Automatic tracking.
Navigation (Aeronautics)
실시간 제어. --과학기술용어시소러스
최적 제어. --과학기술용어시소러스
궤도 추정. --과학기술용어시소러스
비행 경로. --과학기술용어시소러스
비행 제어. --과학기술용어시소러스
Trajectory optimization.
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