Mathematical Problems in Engineering
Volume 2011 (2011), Article ID 829432, 12 pages
Research Article

System Identification of MEMS Vibratory Gyroscope Sensor

1Jiangsu Key Laboratory of Power Transmission and Distribution Equipment Technology, Changzhou 213022, China
2College of Computer and Information, Hohai University, Changzhou 213022, China

Received 14 May 2011; Revised 17 July 2011; Accepted 1 August 2011

Academic Editor: Massimo Scalia

Copyright © 2011 Juntao Fei and Yuzheng Yang. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Fabrication defects and perturbations affect the behavior of a vibratory MEMS gyroscope sensor, which makes it difficult to measure the rotation angular rate. This paper presents a novel adaptive approach that can identify, in an online fashion, angular rate and other system parameters. The proposed approach develops an online identifier scheme, by rewriting the dynamic model of MEMS gyroscope sensor, that can update the estimator of angular rate adaptively and converge to its true value asymptotically. The feasibility of the proposed approach is analyzed and proved by Lyapunov's direct method. Simulation results show the validity and effectiveness of the online identifier.