Dual cantilever beam relaxor-based piezoelectric single crystal accelerometer
US8816570B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2011 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jul 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P2015/0882
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A dual cantilever beam relaxor-based piezoelectric single crystal accelerometer is provided. A flexural sensing structure is provided that employs at least two piezoelectric cantilever beams having their longitudinal axes disposed in a substantially parallel arrangement with each beam containing at least one relaxor-based single crystal transduction element having its polarization axis substantially perpendicular to the longitudinal axis of the beam. One end is mounted to a rigid base and the other end can be mounted to a seismic proof-mass or can be free, wherein the base is subjected to dynamic excitation from either mechanical or acoustical origin. The flexible sensing structure can optionally be encapsulated in a viscoelastic material having a mechanical compliance and loss that is substantially greater than that of the flexible sensing structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.