Research on the Phase Difference Extraction Algorithm of the Free-Drive Three-Axis MEME Gyroscope Used in Spinning Projectiles

Xiao Ming Zhang; Xiao Min Duan; Jian Yu Shang; Dai Di Zhao; Jun Liu

doi:10.4028/www.scientific.net/KEM.609-610.982

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 609-610Research on the Phase Difference Extraction...

Research on the Phase Difference Extraction Algorithm of the Free-Drive Three-Axis MEME Gyroscope Used in Spinning Projectiles

Abstract:

The output signal of the free-drive three-axis MEMS gyroscope used in Spinning Projectiles contains rolling is sine period signal. In order to demodulate the yawing and pitching angular rates, extracting the fringe phase information is needed. It is difficult to realize the phase demodulation of single signal. To solve this problem, reference signal is provided. The phase of the gyroscope is extracted by computing the phase difference. Then, three methods of phase difference measurement are introduced and simulated by MATLAB. According to the signal feature, the contrastive analysis of measurement error is made and the maximal precision of measuring method for phase difference is obtained. The last part is the analysis of performance.

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Periodical:

Key Engineering Materials (Volumes 609-610)

Pages:

982-987

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.609-610.982

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Online since:

April 2014

Authors:

Xiao Ming Zhang*, Xiao Min Duan, Jian Yu Shang, Dai Di Zhao, Jun Liu

Keywords:

Error Analysis, MEMS Gyroscope, Phase Demodulation, Phase Difference

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