서지주요정보
광 픽업 미세 구동부의 모델링 및 최적설계에 관한 연구 = A study on modeling and optimum design of a fine actuator for optical pick-up
서명 / 저자 광 픽업 미세 구동부의 모델링 및 최적설계에 관한 연구 = A study on modeling and optimum design of a fine actuator for optical pick-up / 이문구.
저자명 이문구 ; Lee, Moon-Goo
발행사항 [대전 : 한국과학기술원, 1997].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8007642

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 97062

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

In this paper, a new modeling of a fine actuator for optical pick-up has been proposed and multiobjective optimization of it has been performed. The fine actuator is constituted of the bobbin which is supported by wire suspension, the coils which wind around the bobbin, and the magnets which cause the magnetic flux. If current flows in the coils, magnetic force is produced and then it is balanced with spring force of wire, so the bobbin is positioned. The conventional model assumes the system as simple second order system with spring, mass and damper. This approach can analyze the dynamics easily. However, it is unable to consider the length and amount of damping because the distributed damper is regarded as a lumped damper. In addition the high frequency characteristics and the effects of damping to its characteristics cannot be described since higher resonant mode was not included. In this model the transfer function from input voltage to output displacement of bobbin has been obtained so that we can describe this electromagnetic and mechanical system. Wire suspension is regarded as a continuous Euler beam, damper as distributed viscous damping, and bobbin as a rigid body which can move up- and down-ward motion only. According to the model, the high frequency dynamic characteristics of the fine actuator can be known and the effect of damping can be investigated while the conventional second order model cannot. In multiobjective optimization, two objective function has been chosen to maximize the fundamental frequency and the sensitivity with respect to input voltage of the actuator. Pareto's optimal solutions have been obtained using ε-constraint method. These objective functions can satisfy the requrements in the optical pick-up technology of next generation i.e., the higher access speed and the smaller tracking error.

서지기타정보

서지기타정보
청구기호 {MME 97062
형태사항 vi, 42 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Moon-Goo Lee
지도교수의 한글표기 : 권대갑
지도교수의 영문표기 : Dae-Gab Gweon
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 25-26
주제 광 픽업
모델링
다목적 최적화
Optical pick up
Modeling
Multiobjective optimization
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