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| Periodic Error Compensation for Quartz MEMS Gyroscope Drift of INS | |
| 作者姓名： | Xu Jianmao Zhang Haipeng Sun Junzhong |
| 作者单位： | [1]College of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China [2]School of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China [3]Mechanical and Electrical Equipment Research Institute, Qingdao Navy Submarine Academe, Qingdao 266071, China |
| 摘 要： | 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. |
| 关 键 词： | 时间补偿系统 石英陀螺仪 周期特性 惯性导航系统 |
| 收稿时间： | 2007-07-04 |
| 修稿时间： | 2007-09-03 |
Periodic Error Compensation for Quartz MEMS Gyroscope Drift of INS |
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| Xu Jianmao Zhang Haipeng Sun Junzhong.Periodic Error Compensation for Quartz MEMS Gyroscope Drift of INS[J].Chinese Journal of Aeronautics,2007,20(6):539-545. | |
| Authors: | Xu Zhang Sun Junzhong |
| Institution: | aCollege of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China bSchool of Instrument Science and Opto-electronics Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China cMechanical and Electrical Equipment Research Institute, Qingdao Navy Submarine Academe, Qingdao 266071, China |
| Abstract: | 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. |
| Keywords: | real-time compensation quartz MEMS gyroscope periodic error period characteristic inertial navigation system (INS) Drift Gyroscope MEMS Quartz Error Compensation zero theoretical analysis experimental able computational time raise better approach error terms micro electronic mechanical system new method smoothing |
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