Rotation modulation method of hemispherical resonant gyroscope based on driving vibration mode precession

被引：0

作者：

Chen G. ^{[1
]}

Tang M. ^{[1
]}

Zhang H. ^{[1
]}

Yang S. ^{[1
]}

Jia C. ^{[1
]}

机构：

[1] Tianjin Navigation Instrument Research Institute, Tianjin

来源：

Zhongguo Guanxing Jishu Xuebao/Journal of Chinese Inertial Technology | 2021年 / 29卷 / 05期

关键词：

Driving vibration mode; Hemispherical resonator gyroscope(HRG); Rotation modulation; Whole angle mode;

D O I：

10.13695/j.cnki.12-1222/o3.2021.05.005

中图分类号：

学科分类号：

摘要：

To solve the problem that the gyro drift will periodically change with the vibration mode when the hemispherical resonator gyroscope(HRG) works in the whole angle mode, a HRG rotation modulation method based on driving vibration mode precession is proposed. An error analysis is carried out on the basis of the HRG error model derived by Lynch. The expression of HRG ellipse parameter control force on error suppression in whole angle mode is given so as to get the characteristic of the gyro drift. According to the drift characteristics of the HRG, a method of HRG rotation modulation drift which actively drives the precession of vibration mode is proposed. In experiment, the Allan variance of the gyro drift and inertial navigation simulation positioning error of hardware in the loop based on gyro static data in conventional whole angle mode and rotation modulation mode is compared, which turns out the gyro bias stability (Allan variance) in rotation modulation mode increased more than one order of magnitude. Experiment results show that the proposed method can effectively balance the gyro drift and improve the positioning accuracy of the system. © 2021, Editorial Department of Journal of Chinese Inertial Technology. All right reserved.

引用

页码：589 / 593and603

共 10 条

[1] Lenoble A, Rouilleault T., PRIMUS: SWAP-oriented IMUs for multiple applications, 2016 DGON Inertial Sensors and Systems (ISS), pp. 1-16, (2016)
[2] Remillieux G, Delhaye F., Sagem coriolis vibrating gyros: A vision realized, 2014 DGON inertial sensors and systems (ISS), pp. 1-13, (2015)
[3] Delhaye F., HRG by SAFRAN: The game-changing technology, 2018 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL), pp. 1-4, (2018)
[4] Foloppe Y, Lenoir Y., HRG Crystal<sup>TM</sup> DUAL CORE: Rebooting the INS revolution, 2019 DGON Inertial Sensors and Systems (ISS), pp. 1-24, (2019)
[5] Deleaux B, Lenoir Y., The world smallest, most accurate and reliable pure inertial navigator: ONYX<sup>TM</sup>, 2018 DGON Inertial Sensors and Systems (ISS), pp. 1-24, (2018)
[6] Guo K, Wu Y, Zhang Y, Et al., Research on damping error compensation method for hemispherical resonator gyroscope in whole angle mode, Process Automation instrumentation, 42, 5, pp. 6-9, (2021)
[7] Prikhodko I P, Gregory J A, Bugrov D I, Et al., Overcoming limitations of Rate Integrating Gyroscope by virtual rotation, IEEE International Symposium on Inertial Sensors & Systems, (2016)
[8] Lynch D D., Vibratory gyro analysis by the method of averaging, The 2nd Saint Petersburg International Conference on Gyroscopeic Technology and Navigation, pp. 26-34, (1995)
[9] Zhao X, Yu D, Jiang L, Et al., Point-trimming method of hemispherical resonator gyroscope based on ultrafast laser technology, Journal of Chinese Inertial Technology, 27, pp. 782-786, (2019)
[10] Zhang Y, Miao T, Guo K, Electronic gain error compensation for whole-angle mode coriolis vibrating gyroscopes with high Q factor, 2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL), pp. 1-4, (2020)

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