发明名称 |
Strain energy shuttle apparatus and method for vibration energy harvesting |
摘要 |
An apparatus for use in low frequency vibration energy harvesting (VEH) and with actuators requiring a low deflection force. The apparatus includes a piezo flexure that is loaded with a compressive pre-load force to place the piezo flexure under compression. The piezo flexure may be supported at an intermediate point or at one end thereof. The compressive pre-load force produces flexes the piezo flexure into one or the other of two stable positions, these positions being offset on opposite sides of a longitudinal centerline representing the position of the piezo flexure that would be produced without the compressive pre-load force applied thereto. The compressive pre-load effectively provides a negative spring constant which "softens" the piezo flexure and enhances a responsiveness of the piezo flexure to low frequency vibration energy. The piezo flexure also operates over a much wider frequency bandwidth than conventional systems incorporating a tip mass.
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申请公布号 |
US2006175937(A1) |
申请公布日期 |
2006.08.10 |
申请号 |
US20060344823 |
申请日期 |
2006.02.01 |
申请人 |
CLINGMAN DAN J;RUGGERI ROBERT T |
发明人 |
CLINGMAN DAN J.;RUGGERI ROBERT T. |
分类号 |
H01L41/113 |
主分类号 |
H01L41/113 |
代理机构 |
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代理人 |
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地址 |
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