Compensation of interface circuit errors for MEMS gyroscopes using state observers

Chi Chien-Yu, Peng Yen-Pin, Tsung-Lin Chen*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

This paper presents a novel approach that can compensate the error resulting from interface circuits for MEMS gyroscopes. Different from most of existing researches on gyroscopes wherein the interface circuits are either assumed to be ideal or optimized individually, this approach uses state estimation techniques to compensate the errors resulting from interface circuits and mechanical structure uncertainties, and to obtain correct angular rates for gyroscope systems. In a simulation case where the imperfections of interface circuits include: offset voltages of the operational amplifiers (3 mV and drifting with time), the parasitic capacitance (2 pF), and the measurement noise (white noise, 0.5 mV ), the proposed method can estimate the angular rate correctly with an estimation accuracy of 8 × 10 -4rad/sec.

Original languageEnglish
Title of host publicationProceedings of the 3rd International Conference on Sensing Technology, ICST 2008
Pages25-30
Number of pages6
DOIs
StatePublished - 1 Dec 2008
Event3rd International Conference on Sensing Technology, ICST 2008 - Tainan, Taiwan
Duration: 30 Nov 20083 Dec 2008

Publication series

NameProceedings of the 3rd International Conference on Sensing Technology, ICST 2008

Conference

Conference3rd International Conference on Sensing Technology, ICST 2008
CountryTaiwan
CityTainan
Period30/11/083/12/08

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