| 基于幅频响应特性的半球谐振子频率裂解与固有刚度轴方位角测定方法 |
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| 作者姓名： | 李绍良 杨 浩 夏 语 包旭光 段 杰 赵万良 |
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| 作者单位： | 上海航天控制技术研究所
上海惯性工程技术研究中心,上海航天控制技术研究所
上海惯性工程技术研究中心,上海航天控制技术研究所
上海惯性工程技术研究中心,上海航天控制技术研究所
上海惯性工程技术研究中心,上海航天控制技术研究所
上海惯性工程技术研究中心,上海航天控制技术研究所
上海惯性工程技术研究中心 |
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| 基金项目： | 国家重点研发计划项目（2017YFB1104701）；上海市青年科技英才扬帆计划（17YF1408200） |
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| 摘 要： | 半球谐振子频率裂解与固有刚度轴方位角是影响陀螺性能指标的核心因素。提出了一种基于幅频响应特性的半球谐振子频率裂解与固有刚度轴方位角测定方法，采用压电激振台扫频激振，多普勒激光测振仪检测谐振子的幅频响应特性，通过幅频响应特性曲线分析实现频率裂解与固有刚度轴方位角的测定。对该方法进行了理论分析，搭建了实验装置，并对半球谐振子进行了测试，结果表明：该方法频率裂解测量精度优于0.01Hz，固有频率主轴方位角确定精度优于±1.17°，具有良好的可行性，在半球谐振陀螺研制方面具有良好的参考意义。
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| 关 键 词： | 频率裂解 固有刚度轴 半球谐振陀螺 频差 谐振陀螺 |
Measurement Method of Hemispherical Resonator Frequency Splitting and Normal-Mode Axis Azimuth Based on Amplitude Frequency Response Characteristics |
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| Authors: | LI Shaoliang YANG Hao XIA Yu BAO Xuguang DUAN Jie and ZHAO Wanliang |
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| Institution: | Shanghai Aerospace Control Technology Institute;
Shanghai Engineering Research Center of Inertia,Shanghai Aerospace Control Technology Institute;
Shanghai Engineering Research Center of Inertia,Shanghai Aerospace Control Technology Institute;
Shanghai Engineering Research Center of Inertia,Shanghai Aerospace Control Technology Institute;
Shanghai Engineering Research Center of Inertia,Shanghai Aerospace Control Technology Institute;
Shanghai Engineering Research Center of Inertia and Shanghai Aerospace Control Technology Institute;
Shanghai Engineering Research Center of Inertia |
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| Abstract: | The hemispherical resonator frequency splitting and normal-mode axis azimuth is an important factor affecting the performance of gyroscopes. A measurement method of hemispherical resonator frequency splitting and normal-mode axis azimuth is presented. The normal-mode of hemispherical resonator is excited by a piezoelectric exciter. The amplitude frequency response (AFR) characteristic is recorded by a Laser Doppler Vibrometer (LDV). The frequency splitting and normal-mode axis azimuth of hemispherical resonator could be obtained through AFR analysis. The method is analyzed theoretically, and the hemispherical resonator is tested by the experimental setup using the method presented. The experimental results show that the measurement accuracy of frequency splitting and azimuth is better than 0.01Hz and ±1.17° respectively. The method is feasible and significant for the research on hemispherical resonator gyroscopes (HRG). |
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| Keywords: | frequency splitting normal-mode axis hemispherical resonator gyroscopes frequency mismatch vibrating gyroscopes |
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