摘要
针对半球谐振陀螺(HRG)装配间隙不对称导致检测回路增益不一致,从而引起全角模式下陀螺附加漂移的问题,建立了基于惠更斯电桥的间隙检测模型,给出了模型下最佳电路匹配参数。在此基础上搭建了谐振子装配间隙调整装置,并利用这一装置实现了间隙不对称性控制精度优于0.1μm,间隙均匀性优于0.9%,较传统的电容测量仪间隙调整方法均匀性提升了80.4%。装配方案改进前后陀螺样机全角标定实验表明,改进后陀螺输出角速率周向波动误差得到了抑制,陀螺输出零偏稳定性1 s平滑和100 s平滑分别提升71.7%和58.7%,所提谐振子精密装配方法能够有效提升装配精度和陀螺精度。
In order to solve the problem that the gain of detection loop is inconsistent due to the asymmetric assembly gap of hemispherical resonator gyroscope(HRG),which leads to additional gyro drift in full Angle mode,a gap detection model based on Huygens bridge is established,and the optimal circuit matching parameters under the model are given.On this basis,a harmonic oscillator assembly gap adjustment device is built.The gap asymmetry control precision is better than 0.1μm,the gap uniformity is better than 0.9%,and the gap uniformity is improved by 80.4%compared with the traditional capacitance measuring instrument gap adjustment method.The experimental results of full-angle calibration tests on the gyro prototype before and after the assembly scheme improvement show that the lateral fluctuation error of the gyro output angular velocity has been suppressed after the improvement.The stability of the zero-stable gyro output for 1 s smoothing and 100 s smoothing has been improved by 71.7%and 58.7%,respectively,which proves that the precise assembly method based on the principle of Huygens's bridge resonator(HRG)can effectively improve assembly accuracy and gyro accuracy.
作者
王建青
王小旭
吴辽
东永红
何晓霞
薛藤元
WANG Jianqing;WANG Xiaoxu;WULiao;DONG Yonghong;HE Xiaoxia;XUE Tengyuan(School of Automation,Northwestern Polytechnical University,Xi’an 710072,China;The 16th,China Aerospace Science and Technology Corporation,Xi’an 710100,China)
出处
《中国惯性技术学报》
北大核心
2025年第1期89-95,106,共8页
Journal of Chinese Inertial Technology
基金
科技部重点研发专项(2022YFB3403601)。
关键词
半球谐振陀螺
增益不一致
惠更斯电桥
装配精度
hemispherical resonator gyro
gain inconsistency
Huygens bridge
assembly precision
作者简介
王建青(1978-),女,研究员,博士,从事惯性导航系统、惯性仪表,惯导数字孪生方面研究;通讯作者:吴辽(1990-),男,高级工程师,从事惯性仪表导航方面研究。
