Analysis and design of Gyro-drive mode loop with amplitude control

Author

Shaban, Ahmad ; El-Badry, Mohammed ; El-Sayed, Ayman

Author_Institution

Si-Ware Syst., Cairo, Egypt

fYear

2009

fDate

15-17 Nov. 2009

Firstpage

1

Lastpage

4

Abstract

This paper presents the system architecture of a primary mode oscillation loop of a MEMS GYRO interface. The loop is designed using an all digital PLL acting as a frequency selective gain element in the positive feedback oscillation loop. An amplitude control negative feedback loop is implemented to maintain the stability of oscillation amplitude and consequently the output reading scale factor. A new methodology for modelling the Gyro sensing element in the context of the amplitude loop is presented. System analysis based on this model is presented and verified by simulation.

Keywords

feedback; gyroscopes; micromechanical devices; oscillations; phase locked loops; Gyro sensing element; Gyro-drive mode loop; MEMS GYRO interface; all-digital PLL; amplitude control; frequency selective gain element; negative feedback loop; oscillation amplitude; positive feedback oscillation loop; primary mode oscillation loop; system analysis; Acceleration; Accelerometers; Automatic control; Circuits; Feedback loop; Frequency; Gyroscopes; Micromechanical devices; Phase locked loops; Stability; Vibratory gyroscope; angular velocity sensor; automatic amplitude control;

fLanguage

English

Publisher

ieee

Conference_Titel

Design and Test Workshop (IDT), 2009 4th International

Conference_Location

Riyadh

Print_ISBN

978-1-4244-5748-9

Type

conf

DOI

10.1109/IDT.2009.5404088

Filename

5404088