Electro-mechanical resonance loop
US8912856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2013 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Mar 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/14
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a controller, and more particularly, to systems, devices and methods of controlling a sensor having a resonating mass. The controller includes: an analog-to-digital converter (ADC) unit for extracting a digitized sensor signal from the sensor signal; a phase controller for generating, based on the digitized sensor signal, a phase-controlled signal that is locked in phase with the digitized sensor signal; an amplitude controller for applying a gain to the digitized sensor signal to thereby generate an amplitude-adjusted signal; a modulator for modulating the amplitude-adjusted signal to thereby generate a modulated signal; and a phase shifter for shifting the phase of the modulated signal by 90 degrees. The output signal from the phase shifter is amplified and input to the drive for exciting the resonating mass, to thereby form a closed resonance loop for controlling the oscillation amplitude of the resonating mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.