Inertial sensor with off-axis spring system
US8739627B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2011 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Aug 17, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C19/5762
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An inertial sensor (20) includes a drive mass (30) configured to undergo oscillatory motion and a sense mass (32) linked to the drive mass (30). On-axis torsion springs (58) are coupled to the sense mass (32), the on-axis torsion springs (58) being co-located with an axis of rotation (22). The inertial sensor (20) further includes an off-axis spring system (60). The off-axis spring system (60) includes off-axis springs (68, 70, 72, 74), each having a connection interface (76) coupled to the sense mass (32) at a location on the sense mass (32) that is displaced away from the axis of rotation (22). Together, the on-axis torsion springs (58) and the off-axis spring system (60) enable the sense mass (32) to oscillate out of plane about the axis of rotation (22) at a sense frequency that substantially matches a drive frequency of the drive mass (30).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.