Adaptive oscillator control for a vibrational gyroscope

Author

Leland, Robert P. ; Lipkin, Yacov ; Highsmith, Alton

Author_Institution

Electr. & Comput. Eng., Alabama Univ., Tuscaloosa, AL, USA

Volume

4

fYear

2003

fDate

4-6 June 2003

Firstpage

3347

Abstract

We present an adaptive controller for the drive axis of a vibrational gyroscope. A piezoelectrically driven gyroscope is operated as an oscillator circuit, by using a destabilizing positive feedback with automatic gain control. We adapt the feedback loop gain to obtain the desired amplitude for the oscillation and a parameter of the phase shift component in the feedback loop to yield a 90° phase shift. No sinusoidal driving input is required, and naturally occurring noise is the only input. The resulting oscillation is at the drive axis resonant frequency.

Keywords

adaptive control; automatic gain control; control system synthesis; gyroscopes; microsensors; noise; oscillators; piezoelectric oscillations; resonance; state feedback; adaptive oscillator controller; automatic gain control; destabilizing positive feedback; drive axis; feedback loop gain; naturally occurring noise; oscillations amplitude; oscillator circuit; phase shift component parameter; piezoelectrically driven gyroscope; resonant frequency; vibrational gyroscope; Adaptive control; Automatic control; Feedback circuits; Feedback loop; Gain control; Gyroscopes; Oscillators; Programmable control; Resonant frequency; Vibration control;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2003. Proceedings of the 2003

ISSN

0743-1619

Print_ISBN

0-7803-7896-2

Type

conf

DOI

10.1109/ACC.2003.1244048

Filename

1244048