发明名称 |
Disk storage apparatus and disk storage apparatus control method |
摘要 |
A disk storage apparatus includes: an actuator positioning a head with respect to a disk; a drive device driving the actuator; a voltage detection device detecting a voltage signal induced in driving the actuator; a disturbance estimation unit estimating the magnitude of load disturbance exerted on the head from a drive signal and the voltage signal, and outputting a disturbance estimation signal; a filter unit cutting off a high frequency component of the disturbance estimation signal, and outputting a filter signal; a position detection unit producing a position error signal corresponding to a current position of the head; a position control unit producing a position control signal based on the position error signal; and a correction unit outputting the drive signal based on the filter signal and the position control signal, and the apparatus controls stable positioning of the head against a resistance value fluctuation of a drive coil of the actuator and a resistance value change.
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申请公布号 |
US6950274(B2) |
申请公布日期 |
2005.09.27 |
申请号 |
US20020305366 |
申请日期 |
2002.11.27 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
INAJI TOSHIO;KOHSO HIROSHI;MIYATA KEIZO;UMEDA MAKOTO |
分类号 |
G11B5/55;G11B5/596;G11B21/10;(IPC1-7):G11B5/596 |
主分类号 |
G11B5/55 |
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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