重力场对半球谐振陀螺性能的影响  

Influence of Gravity Field on Performance of Hemispherical Resonator Gyro

作　　者：方仲祺 方海斌[1,2] 雷霆 谭品恒[1,2] 韩世川 FANG Zhongqi;FANG Haibin;LEI Ting;TAN Pinheng;HAN Shichuan(The 26th Institute of China Electronics Technology Group Corporation,Chongqing 400060,China;Chongqing Engineering Laboratory of Solid Inertial Technology,Chongqing 400060,China)

机构地区：[1]中国电子科技集团公司第二十六研究所,重庆400060 [2]固态惯性技术重庆市工程实验室,重庆400060

出　　处：《压电与声光》2020年第6期871-874,共4页Piezoelectrics & Acoustooptics

摘　　要：半球谐振陀螺是唯一能达到惯导级精度的振动陀螺,其谐振子振动状态可能受外界环境条件影响而发生改变,使陀螺信号输出不稳定。为研究半球谐振陀螺对不同方向重力场的敏感性,分析了重力场引起半球谐振陀螺信号输出改变的机理,使用有限元法(FEM)对谐振子进行了结构刚度及锚点损耗两个维度的动力学仿真分析,并开展相应测试验证分析结论。结果表明,不同方向的重力场对半球谐振陀螺的性能无明显影响。The hemispherical resonator gyro is the only vibratory gyro that can reach the accuracy of inertial navigation.The vibrational state of its resonator may change under the influence of external environmental conditions,making the output signal of gyro unstable.In order to study the sensitivity of the hemispherical resonator gyro to the gravity fields in different directions,the mechanism of HRG’s signal output change caused by gravity field is analyzed.The dynamic simulation analysis of resonator in two dimensions of structure stiffness and anchor loss is carried out by using the finite element method(FEM),and corresponding tests are carried out to verify the analysis results.The results indicate that the gravity fields in different directions have no obvious effect on the performance of hemispherical resonator gyro.

关 键 词：半球谐振陀螺 重力场 动力学仿真 陀螺测试 

分 类 号：TN384[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]