오차 기반의 수정된 외란 관측기를 이용한 광디스크 드라이브의 트랙 추종 성능 향상Tracking Performance Improvement for Optical Disk Drive Using Error-based Modified Disturbance Observer
- Other Titles
- Tracking Performance Improvement for Optical Disk Drive Using Error-based Modified Disturbance Observer
- Authors
- 김홍록; 최영진; 서일홍; 정완균
- Issue Date
- Jul-2006
- Publisher
- 제어·로봇·시스템학회
- Keywords
- optical distk drive; disturbance observer; error based modified disturbance observer; Q filter
- Citation
- 제어.로봇.시스템학회 논문지, v.12, no.7, pp 637 - 643
- Pages
- 7
- Indexed
- KCI
- Journal Title
- 제어.로봇.시스템학회 논문지
- Volume
- 12
- Number
- 7
- Start Page
- 637
- End Page
- 643
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/44771
- ISSN
- 1976-5622
- Abstract
- Generally, the tracking performance of optical disk drive(ODD) system can be improved using a disturbance observer(DOB). However, a DOB is not easily applied in an ODD system because an additional microprocessor, such as a digital signal processor(DSP), is needed. This paper shows how a DOB system can be replaced by the error-based modified disturbance observer(EM-DOB) when two mathematical conditions are satisfied. Due to the simplified structure of EM-DOB, the algorithm is easily implemented as an analog circuit, which is suitable for the ODD servo system. Additionally, in these algorithms, disturbances rejection performances can be tuned as Q filter parameters. Similar to a DOB system, three design guidelines of a Q filter can be applied. Experimental results of DOB and EM-DOB are evaluated under forced disturbances.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF ROBOT ENGINEERING > 1. Journal Articles
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