发明名称 |
Method and apparatus for independent piezoelectric excitation in the micro-actuator assemblies of a hard disk drive for improved drive reliability |
摘要 |
A hard disk drive using a micro-actuator assembly to position a slider over a track on a rotating disk surface. The micro-actuator assembly includes a first piezoelectric device and a second piezoelectric device, both mechanically coupled to the slider. The first piezoelectric device includes a first terminal electrically coupled to a first voltage line and a second terminal electrically coupled to a ground line. The second piezoelectric device includes a third terminal electrically coupled to a ground line and a fourth terminal electrically coupled to a voltage line. A voltage applied to the first voltage line stimulates only the first piezoelectric device to alter a lateral position of the slider over the rotating disk surface, and a second voltage applied to the second voltage line stimulates only the second piezoelectric device to alter the lateral position of the slider over the rotating disk surface.
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申请公布号 |
US2009034128(A1) |
申请公布日期 |
2009.02.05 |
申请号 |
US20070897936 |
申请日期 |
2007.08.31 |
申请人 |
SHARMA VINOD;LEE HYUNG JAI |
发明人 |
SHARMA VINOD;LEE HYUNG JAI |
分类号 |
G11B21/24 |
主分类号 |
G11B21/24 |
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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