Periodic Error Compensation for Quartz MEMS Gyroscope Drift of INS

In order to improve the navigation accuracy of an inertial navigation system (INS), composed of quartz gyroscopes, the existing real-time compensation methods for periodic errors in quartz gyroscope drift and the periodic error term relationship between sampled original data and smoothed data are reviewed. On the base of the results, a new compensation method called using former period characteristics to compensate latter smoothness data (UFCL for short) method is proposed considering the INS working characteristics. This new method uses the original data without smoothing to work out an error conversion formula at the INS initial alignment time and then compensate the smoothed data errors by way of the formula at the navigation time. Both theoretical analysis and experimental results demonstrate that this method is able to cut down on computational time and raise the accuracy which makes it a better real-time compensation approach for periodic error terms of quartz micro electronic mechanical system (MEMS) gyroscope's zero drift.

作 者： Xu Jianmao Zhang Haipeng Sun Junzhong   作者單位： Xu Jianmao(College of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)

Zhang Haipeng(School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing,100083, China;Mechanical and Electrical Equipment Research Institute, Qingdao Navy Submarine Academe, Qingdao 266071, China)

Sun Junzhong(Mechanical and Electrical Equipment Research Institute, Qingdao Navy Submarine Academe, Qingdao 266071, China) 

刊 名： 中國(guó)航空學(xué)報(bào)(英文版)  ISTIC 英文刊名： CHINESE JOURNAL OF AERONAUTICS  年，卷(期)： 2007 20(6)  分類(lèi)號(hào)： V2  關(guān)鍵詞： real-time compensation   quartz MEMS gyroscope   periodic error   period characteristic   inertial navigation system (INS)  

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