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Key laboratory of Micro-inertial Instrument and Advanced Navigation Technology, Ministry of Education, Southeast University, Nanjing, Jiangsu Province, 210096, China





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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. View Full-Text

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





Autor: Dunzhu Xia * , Shuling Chen, Shourong Wang and Hongsheng Li

Fuente: http://mdpi.com/



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