서지주요정보
기어감속형 짐발시스템의 백래시 추정방법 및 주파수응답특성에 미치는 백래시 영향에 관한 연구 = A study on the backlash estimation of gimbal system with gear reducers and the backlash influence to frequency response characteristics
서명 / 저자 기어감속형 짐발시스템의 백래시 추정방법 및 주파수응답특성에 미치는 백래시 영향에 관한 연구 = A study on the backlash estimation of gimbal system with gear reducers and the backlash influence to frequency response characteristics / 백주현.
발행사항 [대전 : 한국과학기술원, 2002].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8013644

소장위치/청구기호

학술문화관(문화관) 보존서고

DME 02057

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반납예정일

리뷰정보

초록정보

This thesis analyzes how the input voltage of the motor and the magnitude of the total backlash of a servo system with a gear reducer affect the bandwidth of the servo system. For this purpose, I have investigated the change in the frequency response characteristics depending on various motor input voltages and the magnitude of the total backlash. The bandwidth of the system is defined as the anti-resonance frequency, which appears in the frequency response characteristic. In particular, it is shown that when the motor input voltage is infinite, the servo system has a bandwidth of the system that does not have any backlash, and the amount of system’s bandwidth reduction due to the backlash changes greatly with motor input voltage. Through this work, it has become possible to determine the necessary maximum input voltage of the motor and the maximum permissible magnitude of total backlash to satisfy the desired bandwidth for a servo system with a gear reducer. And, this thesis also investigates the change in frequency response characteristics of a servo system with a two-stage gear reducer in relation to the change in a backlash ratio or the backlash magnitude of each stage under the condition that the total backlash magnitude of the servo system is known. The backlash ratio is defined as the ratio of the first gear stage backlash magnitude to the total backlash magnitude. It is found that although the total backlash magnitude is constant, the frequency response characteristic of the servo system is greatly changed according to the magnitude of the backlash ratio or the backlash of each stage. It is also found that there is an optimal backlash combination to maximize the bandwidth of the servo system, when the permissible total backlash magnitude is determined. I conclude that, if the intention is to expand the bandwidth, the determination of the magnitude of backlash at each stage would be an effective and efficient means of accomplishing this. A unique technique to estimate the magnitude or backlash ratio of each stage backlash in a system with a two-stage gear reducer is proposed. The concept to estimate the magnitude or backlash ratio of each stage backlash is based on the change of frequency response characteristic, in particular, the change of anti-resonance frequency and resonance frequency, due to the change of each stage backlash magnitude, even though the total backlash magnitude of a system with a two-stage gear reducer is constant. The validity of the technique is verified in a gimbal system and satisfactory results are obtained. It is thought that the diagnosis and maintenance of the manufacturing machines and systems with two-stage gear reducers will become more efficient and economical by virtue of proposed technique.

서지기타정보

서지기타정보
청구기호 {DME 02057
형태사항 xii, 127 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Joo-Hyun Baek
지도교수의 한글표기 : 김수현
지도교수의 영문표기 : Soo-Hyun Kim
수록잡지명 : "Backlash estimation of a seeker gimbal with two-stage gear reducers". International journal of advanced manufacturing technology
학위논문 학위논문(박사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 : p. 120-123
주제 백래시 추정
반공진 주파수
공진 주파수
주파수응답특성
짐발
Backlash Estimation
Anti-resonant Frequency
Resonant Frequency
Frequency Response Characteristics
Gimbal
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