Back to Search
Start Over
High resolution capacitance detection circuit for rotor micro-gyroscope.
- Source :
-
AIP Advances . Mar2014, Vol. 4 Issue 3, p031337-1-031337-7. 7p. - Publication Year :
- 2014
-
Abstract
- Conventional methods for rotor position detection of micro-gyroscopes include common exciting electrodes (single frequency) and common sensing electrodes (frequency multiplex), but they have encountered some problems. So we present a high resolution and low noise pick-off circuit for micro-gyroscopes which utilizes the time multiplex method. The detecting circuit adopts a continuous-time current sensing circuit for capacitance measurement, and its noise analysis of the charge amplifier is introduced. The equivalent output noise power spectral density of phase-sensitive demodulation is 120 nV/Hz1/2. Tests revealed that the whole circuitry has a relative capacitance resolution of 1 × 10-8. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 4
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- 95511491
- Full Text :
- https://doi.org/10.1063/1.4869239