Accelerometer control systems
US9201091B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 14, 2010 |
| Grant date | Dec 1, 2015 |
| Priority date | — |
| Expiry date | Dec 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16Z99/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An accelerometer open loop control system comprising a variable capacitance accelerometer having a proof mass movable between fixed capacitor plates, drive signals applied to the capacitor plates, a charge amplifier amplifying an accelerometer output signal representing applied acceleration, and an autoranging facility for monitoring the output signal, and for adjusting the drive signals in dependence on the output signal in order to restrict the amplitude of the accelerometer output signal, thus maintaining sensitivity of the accelerometer while permitting response to a wide range of g values. Corrections are applied by means of look up tables to compensate for inaccuracies arising from movement of the proof mass and temperature variations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.