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Tracking Performance Improvement for Optical Disk Drive Using Error-based Modified Disturbance Observer
- Source :
- Journal of Control, Automation and Systems Engineering. 12:637-643
- Publication Year :
- 2006
- Publisher :
- Institute of Control, Robotics and Systems, 2006.
-
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.
- Subjects :
- Engineering
Digital signal processor
business.industry
ComputerApplications_COMPUTERSINOTHERSYSTEMS
Filter (signal processing)
Servomechanism
Tracking (particle physics)
law.invention
Microprocessor
law
Control theory
Performance improvement
business
Optical disc
Digital signal processing
Simulation
Subjects
Details
- ISSN :
- 12259845
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Journal of Control, Automation and Systems Engineering
- Accession number :
- edsair.doi...........a2959bf7e2616ee37dd32bfb0aa8cc85