Measuring and testing – Vibration – Resonance – frequency – or amplitude study
Reexamination Certificate
2005-04-27
2008-09-16
Williams, Hezron E. (Department: 2856)
Measuring and testing
Vibration
Resonance, frequency, or amplitude study
C073S582000, C073S602000, C073S862590
Reexamination Certificate
active
07424827
ABSTRACT:
In an inspecting method of a piezoelectric/electrostrictive actuator having a piezoelectric/electrostrictive element and two or more electrodes, the frequency response characteristics is picked up when a vibration is given to the piezoelectric/electrostrictive actuator, and the amount of displacement of the piezoelectric/electrostrictive actuator is predicted by the frequency response characteristics. The piezoelectric/electrostrictive actuator is precisely inspected without dissolution and destruction and without actual driving as a product.
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Hatta Tetsuya
Komazawa Masato
Nehagi Takatoshi
Yamada Tomohiro
Burr & Brown
NGK Insulators Ltd.
Saint-Surin Jacques M.
Williams Hezron E.
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