基于角加速率的MEMS陀螺仪快速标定方法  

MEMS Gyroscope Fast Calibration Method Based on the Angular Acceleration Technique

作　　者：路永乐[1] 向磊[1] 刘宇[1] 李云梅[1] 吴林志[1] 

机构地区：[1]重庆邮电大学光电信息感测与传输技术重庆市重点实验室,重庆400065

出　　处：《压电与声光》2017年第3期400-404,共5页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(51175535);MEMS振动传感与微姿态组合测井技术国际联合研究中心科技平台与基地建设基金资助项目(cstc2014gjhz0038);重庆邮电大学自然科学基金资助项目(A2015-49)

摘　　要：微机电系统(MEMS)陀螺仪的非线性误差是影响陀螺仪测量精度的主要因素之一。针对角速率标定法难以获得陀螺仪连续输出的问题。该文提出了一种角加速率标定实验方案,介绍了用二次标定方法解算出陀螺仪的零位误差系数、刻度因子、交叉耦合系数及非线性误差项的具体步骤。与常规补偿模型算法比较表明,此方法可快速标定陀螺仪的误差参数,补偿后的MEMS陀螺仪绝对误差小于0.084(°)/s,线性度提高了1~2个数量级。The nonlinear error of MEMS gyro is one of the main factors influencing its measure precision.For the problem that the existing angular rate calibration method is difficult to obtain the continuous output of gyro,an implementation calibrating method based on the angular acceleration technique is proposed in this paper.The secondary calibration method is presented to calculating the zero error coefficient,the scale factor,the cross coupling coefficient and the nonlinear error term of gyroscope.Compared with conventional compensation model,the proposed method can calibrate the error parameters of the gyro quickly.The absolute error is less than 0.084(°)/s and the linearity is increased by 1~2magnitudes after compensating.

关 键 词：MEMS陀螺仪 角加速率 非线性误差 二次标定 快速 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]