Fast-seeking control for two-stage actuator system in optical disk drives
A new fast‐seeking control method for the two‐stage actuator system in an optical disk drive has been developed. Fast seeking is performed by means of velocity control in two modes. The lens velocity in the first mode, which is estimated using a multirate observer, is equal to the pickup unit veloci...
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| Veröffentlicht in: | Electrical engineering in Japan 2012-08, Vol.180 (3), p.64-71 |
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| Format: | Artikel |
| Sprache: | eng |
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| Zusammenfassung: | A new fast‐seeking control method for the two‐stage actuator system in an optical disk drive has been developed. Fast seeking is performed by means of velocity control in two modes. The lens velocity in the first mode, which is estimated using a multirate observer, is equal to the pickup unit velocity, and it is controlled in order to prevent the lens from vibrating. The lens velocity in the second mode is equal to the specified target velocity, and it is controlled in order to improve the laser‐spot positioning accuracy. A DVD‐ROM drive is tested to confirm that the control system we propose significantly improves the seeking capabilities. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 180(3): 64–71, 2012; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.21244 |
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| ISSN: | 0424-7760 1520-6416 |
| DOI: | 10.1002/eej.21244 |