发明名称 |
Method and apparatus for restraining temperature induced deformation of a piezoelectric device |
摘要 |
Apparatuses and methods for controlling the temperature induced deformation of a piezoelectric device. A piezoelectric device receives an activation signal and displaces in a first direction for a first predetermined distance as a function of the activation signal. The piezoelectric device also displaces in a second direction as a function of a change in temperature of the piezoelectric device. A stop is located a second predetermined distance from the piezoelectric device. The stop prevents the displacement of the piezoelectric device in the second direction beyond a third predetermined distance. A charge redistributing device is coupled with the piezoelectric device. The charge redistributing device redistributes charge on the piezoelectric device due to the temperature change to relieve internal electric fields of the piezoelectric device due to temperature induced deformation of the piezoelectric device.
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申请公布号 |
US6703761(B2) |
申请公布日期 |
2004.03.09 |
申请号 |
US20010036688 |
申请日期 |
2001.12.21 |
申请人 |
CATERPILLAR INC |
发明人 |
GALLMEYER CHRISTOPHER F.;WATERFIELD L. GLENN |
分类号 |
H01L41/04;H01L41/09;H02N2/00;H02N2/04;H02N2/06;(IPC1-7):H01I41/08 |
主分类号 |
H01L41/04 |
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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