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Sensors 2009, 9(10), 8349-8376; doi:10.3390/s91008349

Microgyroscope Temperature Effects and Compensation-Control Methods

Key laboratory of Micro-inertial Instrument and Advanced Navigation Technology, Ministry of Education, Southeast University, Nanjing, Jiangsu Province, 210096, China
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Received: 29 July 2009 / Revised: 28 August 2009 / Accepted: 21 September 2009 / Published: 21 October 2009
(This article belongs to the Special Issue Modeling, Testing and Reliability Issues in MEMS Engineering - 2009)

Abstract

In the analysis of the effects of temperature on the performance of microgyroscopes, it is found that the resonant frequency of the microgyroscope decreases linearly as the temperature increases, and the quality factor changes drastically at low temperatures. Moreover, the zero bias changes greatly with temperature variations. To reduce the temperature effects on the microgyroscope, temperature compensation-control methods are proposed. In the first place, a BP (Back Propagation) neural network and polynomial fitting are utilized for building the temperature model of the microgyroscope. Considering the simplicity and real-time requirements, piecewise polynomial fitting is applied in the temperature compensation system. Then, an integral-separated PID (Proportion Integration Differentiation) control algorithm is adopted in the temperature control system, which can stabilize the temperature inside the microgyrocope in pursuing its optimal performance. Experimental results reveal that the combination of microgyroscope temperature compensation and control methods is both realizable and effective in a miniaturized microgyroscope prototype.
Keywords: microgyroscope; temperature characteristic; BP neural networks; polynomial fitting; temperature compensation and control microgyroscope; temperature characteristic; BP neural networks; polynomial fitting; temperature compensation and control
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Xia, D.; Chen, S.; Wang, S.; Li, H. Microgyroscope Temperature Effects and Compensation-Control Methods. Sensors 2009, 9, 8349-8376.

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