旋转体自旋角速度不稳定对陀螺稳定性的影响  

Influence of the rotator’s spinning instability on the stability of Si micromachined gyroscope

作　　者：张福学[1] 张伟[1] 

机构地区：[1]北京信息工程学院传感技术研究中心,北京100101

出　　处：《中国惯性技术学报》2007年第5期585-588,共4页Journal of Chinese Inertial Technology

基　　金：国家自然科学基金项目(60472011);北京市传感器重点实验室开放课题(KM200710772013)

摘　　要：为了弄清旋转体自旋角速度不稳定对陀螺稳定性的影响,根据硅微机械陀螺的运动方程,分别给出对高阻尼陀螺和低阻尼陀螺输出信号相对误差的数学模型,理论论证了硅微机械陀螺输出信号的误差主要是阻尼系数和旋转体自旋角速度不稳定造成的。实验结果给出,旋转体自旋角速度不稳定造成的输出电压比例系数误差达4.1%。理论论证和实验验证均表明,对低阻尼陀螺,自旋角速度不稳定对陀螺稳定性影响显著。In order to make clear the influence of rotator＇s spinning instability on the gyroscope＇s stability, the mathematical models for relative error＇s of gyroscope output with high damping and low damping were given based on the motion equations of the Si micromachined gyroscope. The paper theoretically demonstrates that the error of the Si micromachined sensor＇s output signals is mainly caused by the instability of damping coefficient and the instability of rotator＇s spinning. The experiment shows that the error of output voltage scale coefficient caused by the angular velocity instability is up to 4.1%. Theoretical demonstration and experimental verification show that the angular velocity instability has significantly effect on the stability of the low damping Si micromachined gyroscope.

关 键 词：陀螺 微机械 角速度 稳定性 

分 类 号：U666.1[交通运输工程—船舶及航道工程]