Robust compensator control of a non-resonant MEMS gyroscope with linear quadratic regulator

Wei Cui, Xiaolin Chen, Wei Xue

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a controller design for a four degrees-of-freedom (4-DOF) non-resonant gyroscope via the linear quadratic regulator (LQR) technique. Compared to conventional MEMS gyroscopes, non-resonant gyroscopes are less vulnerable to fabrication perturbations. However, closed-loop performance of non-resonant gyroscopes has not been investigated previously. The control of non-resonant gyroscopes involves consideration of high order systems. LQR, which achieves balances between a fast response and a low control effort, has proven to be effective for high order systems. Our simulation results show that the closed-loop 4-DOF non-resonant gyroscope presented in this paper is able to achieve faster response and higher robustness to parameter uncertainties than the open-loop device. Under the sinusoidal input, compared to an error of 11.06% for the open-loop system, the closed-loop scale factor uniformity error is reduced to 0.014% under ±10% parameter perturbations. The device performance is analyzed by the behavior modeling approach in CoventorWare. The results show that the closed-loop non-resonant gyroscope achieves better performance through the LQR. The method reported here is proven to be effective and can be used in a wide range of applications.

Original languageEnglish (US)
Title of host publicationASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Pages201-207
Number of pages7
DOIs
StatePublished - Dec 1 2010
Externally publishedYes
EventASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010 - Vancouver, BC, Canada
Duration: Nov 12 2010Nov 18 2010

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume10

Other

OtherASME 2010 International Mechanical Engineering Congress and Exposition, IMECE 2010
Country/TerritoryCanada
CityVancouver, BC
Period11/12/1011/18/10

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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