Piezoelectric element driving apparatus and method, and piezoelectric system using the same
US9680084B2 · kind B2 · utility
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37Claims
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Key dates
| Filing date | Apr 7, 2014 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Nov 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric element driving apparatus may apply a predetermined driving signal to a piezoelectric element to drive the piezoelectric element. The driving signal may be an asymmetrical waveform in which amplitudes of first and second polarities thereof are different from each other. An exemplary embodiment in the present disclosure may provide a piezoelectric element driving apparatus and method having a high output while protecting dielectric characteristics of a piezoelectric element by driving the piezoelectric element using an asymmetrical driving signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.