Electrode configuration for vibrating beam transducers
US4929860A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1988 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | May 17, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/097
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A technique is described for tailoring the configuration of electrodes on a piezoelectric beam such that the tendency of the beam to vibrate in a predetermined flexure mode is enhanced. The mode has a predetermined longitudinal strain versus longitudinal position profile. At least two electrodes are mounted on the beam, and the configuration of at least one electrode varies as a function of longitudinal position, such that when a voltage difference is applied between the electrodes, the longitudinal force produced by the electrodes, as a function of longitudinal position, approximates the longitudinal strain versus longitudinal position profile. The configuration may be varied by varying the width of the electrode or the position of the electrode on the underlying beam surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.