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http://dx.doi.org/10.5139/JKSAS.2019.47.6.438

The Extraction Method for the G-Sensitivity Scale-Factor Error of a MEMS Vibratory Gyroscope Using the Inertial Sensor Model  

Park, ByungSu (Agency For Defense Development)
Han, KyungJun (Agency For Defense Development)
Lee, SangWoo (Agency For Defense Development)
Yu, MyeongJong (Agency For Defense Development)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.47, no.6, 2019 , pp. 438-445 More about this Journal
Abstract
In this paper, we present a new approach to extract the g-sensitivity scale-factor error for a MEMS gyroscope. MEMS gyroscopes, based on the use of both angular momentum and the Coriolis effect, have a g-sensitivity error due to mass unbalance. Generally, the g-sensitivity error is not considered in general use of gyroscopes, but it deserves our attention if we are to develop for tactical class performance and reliability. The g-sensitivity error during vehicle flight increases navigation error; so it must be analyzed and compensated for the use of MEMS IMU for high dynamics vehicle systems. Therefore, we analyzed how to extract the g-sensitivity scale-factor error from the inertial sensor error model. Furthermore we propose a new method to extract the g-sensitivity error using flight motion simulator. We verified our proposed method with experimental results.
Keywords
Inertial Measurement Unit; Micro-Electro-Mechanical Systems; Vibratory Gyroscope; G-sensitivity; Scale-factor Error; Flight Motion Simulator;
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