发明名称 |
Rotational recording apparatus and control method |
摘要 |
A technique for adaptively and stably updating the feed forward value required to drive the head of a rotational recording apparatus. A trajectory of a target position is generated for each seek command by using a compound function comprising a ramp function and a sine-wave function. The sine-wave element of the target position is transmitted to an adaptive filter for updating coefficients of the compound formula. All elements other than the sine-wave element are removed to provide a smooth update of the compound function's coefficients.
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申请公布号 |
US7136258(B2) |
申请公布日期 |
2006.11.14 |
申请号 |
US20020242220 |
申请日期 |
2002.09.12 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
KISAKA MASASHI |
分类号 |
G11B5/596;G11B21/08;G05D3/12;G11B5/55;G11B21/10 |
主分类号 |
G11B5/596 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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