Posture Demodulation Study on Carriers Measured by a Novel MEMS Gyroscope

Abstract:

Non-driven structure silicon micromechanical gyroscope can sense rolling, pitching and yaw angular rate of the rotating body at the same time, which is suitable for rotating body gesture detection. But this characteristic is not suitable for non-rotating flight carrier. So this study uses micro motor to provide spin angular velocity for non-driven silicon micromechanical gyroscope, and to further generate gyroscopic effect which is sensitive to the attitude information, including rolling rate, yaw angular rate and pitch angular rate of low-speed rotating or non-rotating object. The study analyses the output signals based on simulation rotating object experiments of three-axis moving of silicon micromechanical gyroscope, the study uses phase based method to determine deflection polarity, and uses double accelerometer multiplication algorithm to demodulate the output signals of gyro. All above results provide a basis research results for further realize the goal of real-time demodulation of gyro signals when silicon micromechanical gyroscope is applied to the non-rotating and rotating flight carrier.

• Periodical: Advanced Materials Research (Volumes 718-720)
• Pages: 989-993
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.718-720.989
• Online since: July 2013
• Authors: Ling Wang, Fu Xue Zhang, Xiao Hua Song, Xiao Fang Chen, Xiao Qing Cai, Yu Ying Zhang, Xing Chun Shi
• Keywords: Signal Analyses, Signal Demodulation, Silicon MEMS Gyroscope

References

[1] Zhang Fuxue, Zhang Wei, Yan Qingwen, Non-driven Silicon Micro-mechanical Gyroscope, Piezoelectrics & Acoustooptics, vol.30, no.6, pp.660-663, 2008.

[2] Wang Ling, Zhang Fuxue, Analyses on Output Signal of MEMS Gyroscope Applied to Low Speed Rotating Carrier, Proceeding of the 2010 IEEE International Conference on Information and Automation, Harbin, China, pp.960-964, 2010.

DOI: 10.1109/icinfa.2010.5512141

[3] Zhang Fuxue, Wang Hongwei, Zhang Wei, et al, A silicon micro-machined gyroscope driven by the rotating carrier's angle velocity, Proceedings of the 2005 IEEE International Conference on Information Acquisition. Hong Kong and Macau, China, pp.128-133, 2005.

DOI: 10.1109/icia.2005.1635068

[4] Zhang Fuxue, Zhang Wei, Influence of the rotator's spinning instability on the stability of Si micro-machined gyroscope, Journal of Chinese Inertial Technology, vol.15.no.5.pp.585-588, 2007.

[5] Konovalv S F, Kuleshov A V, Podtchezertsev V P, et al, Vibrating angular rate sensor, Integrated Navigation Systems Proceedings of 10th International Conference. St Petersburg, pp.107-117, 2003.