Identification and correction of phase delay errors for hemispherical resonator gyroscopes
Abstract The phase-delay error of the circuit system is the primary source of the output error observed in the hemispherical resonator gyroscope (HRG). Additionally, the temperature-dependent nature of the phase-delay error results in a deterioration of the initial calibration parameters, which, in...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-86288-1 |
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| author | Youhuan Ning Changhong Wang Boqi Xi Zhen Tian Boda Zhang |
| author_facet | Youhuan Ning Changhong Wang Boqi Xi Zhen Tian Boda Zhang |
| author_sort | Youhuan Ning |
| collection | DOAJ |
| description | Abstract The phase-delay error of the circuit system is the primary source of the output error observed in the hemispherical resonator gyroscope (HRG). Additionally, the temperature-dependent nature of the phase-delay error results in a deterioration of the initial calibration parameters, which, in turn, significantly impairs the performance of the gyroscope in its intended application. This paper proposes a self-calibration method to effectively suppress the impact of phase-delay error on the application performance of gyroscopes. Firstly, based on the analysis of the influence of phase-delay error on the performance of the whole-angle mode HRG, a sinusoidal interference signal with a small amplitude is introduced into the quadrature control loop of the gyroscope. Then, the angular rate signal is demodulated and calculated to obtain the phase-delay error of the system, which is employed as the compensation value of the reference phase of the PLL to offset the phase-delay error of the circuit system in real-time. The experimental results demonstrate that after the phase-delay error is self-calibrated, the zero-bias output error of the gyroscope is reduced by 5 times, the bias instability is improved by 37.7%, and the self-calibration method of the phase-delay error presented is more strongly robust to temperature changes. |
| format | Article |
| id | doaj-art-54266fde8c294ad093d6debd96ccf2d7 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-54266fde8c294ad093d6debd96ccf2d72025-01-19T12:19:25ZengNature PortfolioScientific Reports2045-23222025-01-0115111610.1038/s41598-025-86288-1Identification and correction of phase delay errors for hemispherical resonator gyroscopesYouhuan Ning0Changhong Wang1Boqi Xi2Zhen Tian3Boda Zhang4Space Control and Inertial Technology Research Center, Harbin Institute of TechnologySpace Control and Inertial Technology Research Center, Harbin Institute of TechnologySpace Control and Inertial Technology Research Center, Harbin Institute of TechnologySpace Control and Inertial Technology Research Center, Harbin Institute of TechnologySpace Control and Inertial Technology Research Center, Harbin Institute of TechnologyAbstract The phase-delay error of the circuit system is the primary source of the output error observed in the hemispherical resonator gyroscope (HRG). Additionally, the temperature-dependent nature of the phase-delay error results in a deterioration of the initial calibration parameters, which, in turn, significantly impairs the performance of the gyroscope in its intended application. This paper proposes a self-calibration method to effectively suppress the impact of phase-delay error on the application performance of gyroscopes. Firstly, based on the analysis of the influence of phase-delay error on the performance of the whole-angle mode HRG, a sinusoidal interference signal with a small amplitude is introduced into the quadrature control loop of the gyroscope. Then, the angular rate signal is demodulated and calculated to obtain the phase-delay error of the system, which is employed as the compensation value of the reference phase of the PLL to offset the phase-delay error of the circuit system in real-time. The experimental results demonstrate that after the phase-delay error is self-calibrated, the zero-bias output error of the gyroscope is reduced by 5 times, the bias instability is improved by 37.7%, and the self-calibration method of the phase-delay error presented is more strongly robust to temperature changes.https://doi.org/10.1038/s41598-025-86288-1Hemispherical resonator gyroscopesPhase-delay errorSelf-calibrationTemperature driftParameter identification |
| spellingShingle | Youhuan Ning Changhong Wang Boqi Xi Zhen Tian Boda Zhang Identification and correction of phase delay errors for hemispherical resonator gyroscopes Scientific Reports Hemispherical resonator gyroscopes Phase-delay error Self-calibration Temperature drift Parameter identification |
| title | Identification and correction of phase delay errors for hemispherical resonator gyroscopes |
| title_full | Identification and correction of phase delay errors for hemispherical resonator gyroscopes |
| title_fullStr | Identification and correction of phase delay errors for hemispherical resonator gyroscopes |
| title_full_unstemmed | Identification and correction of phase delay errors for hemispherical resonator gyroscopes |
| title_short | Identification and correction of phase delay errors for hemispherical resonator gyroscopes |
| title_sort | identification and correction of phase delay errors for hemispherical resonator gyroscopes |
| topic | Hemispherical resonator gyroscopes Phase-delay error Self-calibration Temperature drift Parameter identification |
| url | https://doi.org/10.1038/s41598-025-86288-1 |
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