发明名称 |
Combined servo-tracking and preload-controlling microactuator |
摘要 |
A dual-acting disc drive micro-actuator is formed of a stack of adjoining layers. The stack includes first through fifth layers. The first layer includes first and second spaced apart top electrodes. The second layer includes a first piezoelectric element electrically coupled to the first and second top electrodes. The third layer includes a center electrode electrically coupled to the first piezoelectric element. The fourth layer includes a second piezoelectric element electrically coupled to the center electrode. The fifth layer includes a first bottom electrode electrically coupled to the second piezoelectric element. The first and second piezoelectric elements are expandable and contractible in a common length direction in response to respective electrical fields applied between the center electrode and the first top electrode, the second top electrode and the first bottom electrode.
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申请公布号 |
US2001050833(A1) |
申请公布日期 |
2001.12.13 |
申请号 |
US20010876463 |
申请日期 |
2001.06.07 |
申请人 |
MURPHY JAMES M.;SLUZEWSKI DAVID A.;WRIGHT JOHN S.;QUALEY DAVID G. |
发明人 |
MURPHY JAMES M.;SLUZEWSKI DAVID A.;WRIGHT JOHN S.;QUALEY DAVID G. |
分类号 |
G11B5/55;G11B5/60;(IPC1-7):G11B5/56 |
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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