DocumentCode
1897455
Title
Robust compensation of a force-balanced high-Q gyroscope
Author
Ezekwe, Chinwuba D. ; Boser, Bernhard E.
Author_Institution
Berkeley Sensor & Actuator Center, Univ. of California, Berkeley, Berkeley, CA
fYear
2008
fDate
26-29 Oct. 2008
Firstpage
795
Lastpage
798
Abstract
Force feedback has been widely used in low-Q sensors to improve bandwidth, drift, and other sensor characteristics, but its use in high-Q vacuum packaged gyroscopes for similar benefits has been hindered by closed-loop instability caused by the highly under-damped higher-order resonances of the sensor. This paper presents a compensation technique that uses positive feedback to overcome this stability challenge. The technique has been experimentally verified in a SigmaDelta closed-loop readout interface with a vacuum-packaged vibratory-rate gyroscope.
Keywords
electronics packaging; force feedback; force sensors; gyroscopes; SigmaDelta closed-loop readout interface; closed-loop instability; force feedback; force-balanced high-Q gyroscope; high-Q vacuum packaged gyroscopes; low-Q sensors; robust compensation; vacuum-packaged vibratory-rate gyroscope; Bandwidth; Force feedback; Force sensors; Frequency; Gyroscopes; Mechanical sensors; Resonance; Robustness; Sensor phenomena and characterization; Stability;
fLanguage
English
Publisher
ieee
Conference_Titel
Sensors, 2008 IEEE
Conference_Location
Lecce
ISSN
1930-0395
Print_ISBN
978-1-4244-2580-8
Electronic_ISBN
1930-0395
Type
conf
DOI
10.1109/ICSENS.2008.4716561
Filename
4716561
Link To Document