서지주요정보
반복학습제어기를 이용한 디지탈 비디오 디스크 레코더의 고속 직접 검색 = Rapid direct seek of digital video disk recorder using iterative learning control
서명 / 저자 반복학습제어기를 이용한 디지탈 비디오 디스크 레코더의 고속 직접 검색 = Rapid direct seek of digital video disk recorder using iterative learning control / 김완일.
저자명 김완일 ; Kim, Wan-Il
발행사항 [대전 : 한국과학기술원, 1995].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8005514

소장위치/청구기호

학술문화관(문화관) 보존서고

MEE 95014

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

In order to achieve robust and rapid track seek of digital video disk recorder(DVDR), alignment between beam axis and objective lens is important as well as exact control of beam spot velocity. The misalignment occurs due to the difference in inertia of two stage actuators, static friction, and model uncertainties at low frequencies. It worsens the measuring accuracies of position and velocity of beam spot, and more over makes the objective lens swing large at the seek end. Conventional way of minimizing the misalignment through feedback control scheme alone is not only insufficient but also hard to tune. In this thesis to eliminate the effects of the repetitive disturbance and model uncertainties, a iterative learning control algorithm has been developed. The algorithm modifies feedforward reference input at each seek trial till it converges. The algorithm utilizing not error itself but a function of it(it cannot be measured directly), gives a convergence condition and remaining error when learning is completed, which are similar to those of one with error. With these conditions, learning algorithm is designed using the nominal plant model. In simulations and experiments used with the conventional feedback controller, the misalignment and the swing at the seek end reduced less than the half. In consequence the seek motion become more stable and the success rate in the track following at the seek end is increased.

서지기타정보

서지기타정보
청구기호 {MEE 95014
형태사항 ii, 60 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Wan-Il Kim
지도교수의 한글표기 : 정명진
지도교수의 영문표기 : Myung-Jin Chung
학위논문 학위논문(석사) - 한국과학기술원 : 전기및전자공학과,
서지주기 참고문헌 : p. 59-60
주제 Adaptive control systems.
videodisc players.
Feedback control systems.
Thermoplastic recording.
순환 처리. --과학기술용어시소러스
적응 시스템. --과학기술용어시소러스
비디오 디스크. --과학기술용어시소러스
피드백. --과학기술용어시소러스
데이터 검색 시스템. --과학기술용어시소러스
Iterative methods (Mathematics)
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