石英MEMS陀螺漂移周期性误差补偿研究  

Study on real time compensation of quartz MEMS gyroscope drift periodic error

作　　者：张海鹏[1] 房建成[1] 

机构地区：[1]北京航空航天大学仪器科学及光电工程学院

出　　处：《仪器仪表学报》2008年第6期1225-1230,共6页Chinese Journal of Scientific Instrument

基　　金：国防基础研究重大项目(K1204060116);新世纪人才项目(NCET-04-0162)资助

摘　　要：为提高基于石英MEMS陀螺仪的微小型惯性导航系统的性能,本文对应用于MIMU的石英MEMS陀螺仪零点漂移中周期性误差补偿方法的原理和特点进行分析研究,得到一种新的补偿方法。该方法先利用数据平滑前的数据确定误差折算公式的系数,再以折算公式补偿数据平滑后得到的低频数据。从实验结果来看,这种方法在保证实时性要求的前提下,能避开数据平滑过程对周期性误差频率稳定性的影响,提高补偿精度,是一种有效的石英系列MEMS陀螺仪漂移实时补偿方法。The principles and characteristics of present compensation methods for periodic zero drift error of quartz MEMS gyroscopes in inertial navigation system are studied and analyzed and a new compensation method is proposed to improve the system performance. This new method utilizes the original data before data smoothing to calculate the error conversion formula parameters in initial alignment time and then compensate the smoothed data error with the conversion formula at navigation time. Experiment results show that this method can avoid the bad influence of data smoothing on frequency stability of periodic error and maintains the real-time characteristic. This method is effective in the real-time error compensation of quartz MEMS gyroscope.

关 键 词：陀螺漂移 周期性误差项 补偿 石英微机电陀螺仪 实时性 

分 类 号：V448.25[航空宇航科学与技术—飞行器设计]