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Periodic Error Compensation for Quartz MEMS Gyroscope Drift of INS

机译:惯导的石英MEMS陀螺仪漂移的周期性误差补偿

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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.
机译:为了提高由石英陀螺仪组成的惯性导航系统(INS)的导航精度,回顾了现有的石英陀螺仪漂移周期性误差的实时补偿方法以及采样原始数据与平滑数据之间的周期性误差项关系。 。在结果的基础上,提出了一种考虑惯导系统工作特性的新方法,即采用前周期特性来补偿后平滑数据(简称UFCL)的方法。这种新方法使用原始数据而不进行平滑处理,从而在INS初始对齐时计算出一个误差转换公式,然后在导航时通过该公式补偿平滑后的数据误差。理论分析和实验结果均表明,该方法能够减少计算时间,提高了计算精度,是石英微电子机械陀螺仪零漂移周期误差项的一种较好的实时补偿方法。

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