发明名称 |
Method and apparatus for compensating for temperature induced deformation of a piezoelectric device |
摘要 |
The present invention provides methods and apparatus for controlling an electric field across a piezoelectric device. A temperature determining device transmits a temperature signal indicative of a temperature of the piezoelectric device. A control device receives the temperature signal and a first control signal indicative of a desired displacement of the piezoelectric device. The control device transmits a second control signal to the piezoelectric device as a function of the temperature signal and the control signal. The second control signal creates the electric field across the piezoelectric device, when the temperature of the piezoelectric device is below a predetermined threshold, having a magnitude above a normal operating range for the piezoelectric device.
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申请公布号 |
US6597083(B2) |
申请公布日期 |
2003.07.22 |
申请号 |
US20010025400 |
申请日期 |
2001.12.19 |
申请人 |
CATERPILLAR INC. |
发明人 |
GALLMEYER CHRISTOPHER F.;WATERFIELD LARRY GLENN |
分类号 |
H01L41/04;H02N2/06;(IPC1-7):H01L41/09 |
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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