The Design of the Closed-loop Control System of Micro Machined Gyroscope

Author

Zhenquan Zhang ; Haipeng Liu ; Shiqiao Gao

Author_Institution

State Key Lab. of Explosion Sci. & Technol., BIT, Beijing, China

fYear

2012

fDate

8-10 Dec. 2012

Firstpage

854

Lastpage

858

Abstract

The open-loop driving circuit of the capacitive micro mechanical gyroscope can be influenced with the changes of environmental factors, so it can´t ensure the amplitude stability of the gyroscope driving mode. So the sensitivity of the open-loop driving gyroscope is very low. In order to improve the sensitivity and stability of the gyroscope, the closed-loop drive control is put forward. The basic idea of the closed-loop drive control is that: it detects the vibration frequency and amplitude of the drive mode and feedbacks to adjust the frequency and amplitude of the drive voltage in order to improve the stability of the gyroscope.

Keywords

closed loop systems; gyroscopes; micromechanical devices; open loop systems; capacitive micromechanical gyroscope; closed-loop control system design; closed-loop drive control; drive mode amplitude; drive voltage amplitude; drive voltage frequency; environmental factors; gyroscope stability; micromachined gyroscope; open-loop driving circuit; open-loop driving gyroscope; vibration frequency detection; Band pass filters; Drives; Frequency control; Gain control; Gyroscopes; Vibrations; Voltage control; AGC control; closed-loop control; driving circuit; micro machined gyroscope;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation, Measurement, Computer, Communication and Control (IMCCC), 2012 Second International Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4673-5034-1

Type

conf

DOI

10.1109/IMCCC.2012.206

Filename

6429041