摘要
基于小角度近似的传统陀螺仪测试方法,不再适用于MEMS陀螺仪标度因数和输入轴失准角的测试。通过研究陀螺标度因数与输入轴失准角之间的耦合关系,提出了解耦测试原理,建立了严格的数学模型,针对该原理设计了解耦测试设备和方法;应用有约束多元非线性最小二乘问题解法实现了解耦解算。解耦原理计算机仿真和模拟MEMS陀螺仪的半物理仿真结果均表明,该方法能精确实现测试参数的解耦,解耦精度不受输入轴失准角大小的影响。本方法优于传统方法,尤其适用于大输入轴失准角的MEMS陀螺仪。
The traditional gyroscope's test method is based on small angle linearization and not suitable to be used in the test of MEMS gyroscope scale factor and input axis misalignment.Through profound study of coupling relationship between gyroscope scale factor and its input axis misalignment,an uncouple principle was proposed,a precise mathematic model was established,and a set of uncouple test equipment and experiment were designed;the methods for solving constraint nonlinear Least-Squares problems were applied...
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2007年第5期1161-1166,共6页
Journal of Astronautics
基金
国防基础研究重大项目(D2120060013)
新世纪人才项目(NCET-04-0162)
关键词
微机电陀螺仪
标定
标度因数
输入轴失准角
解耦
MEMS gyroscope
Calibration
Scale factor
Input axis misalignment
Coupling
