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Compensation for repeatable tracking errors in hard drives using discrete-time repetitive controllers
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DOI：10.1109/3516.928726.png)
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摘要
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This paper presents the repeatable runout (RRO) compensation in hard disk drives (HDDs). To cancel the RRO, we applied repetitive controllers for the tracking system. Through experiments, we obtained a high reduction ratio of from 10 to 45 dB for up to 10th harmonics component of the RRO. Furthermore, by switching filter parameters between in the learning state and the steady state, we obtained fast learning of less than two disk rotations.
Keyword:
hard disk drive
repeatable runout
repetitive controller
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7.3
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5.4K
被引数:
2.4W
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