Hemispherical resonator gyroscope signal demodulation method under high dynamic condition
By constructing a model of the hemispherical resonant gyro signal and using the least squares method to estimate and compensate for the error introduced by the azimuth rate of change of standing wave azimuth, the problem of large signal demodulation error under high dynamic conditions is solved, and the solution accuracy and control accuracy of gyro signal are improved.
CN119984223APending Publication Date: 2025-05-13BEIJING AUTOMATION CONTROL EQUIP INST
Patent Information
- Application Number
- CN202411976779.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-05-13
AI Technical Summary
Technical Problem
Under high dynamic conditions, the demodulation error of the hemispherical resonant gyro signal is too large, resulting in inaccurate calculation of the gyro angular rate.
Method used
By analyzing the vibration signal of the hemispherical resonant gyro, a vibration signal model of the standing wave azimuth change with time was constructed, and the error introduced by the standing wave azimuth change rate was estimated using the least squares method, and compensation was performed.
Benefits of technology
It effectively compensates for the demodulation error introduced by the azimuth change rate of standing wave under high dynamic conditions, and improves the solution accuracy and full-angle control accuracy of the gyroscope vibration signal.
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Figure CN119984223A_ABST
Abstract
The invention provides a hemispherical resonator gyro signal demodulation method under a high dynamic condition, which aims at the hemispherical resonator gyro signal detection problem under the high dynamic condition, establishes a vibration signal model in which a standing wave azimuth angle changes along with time, and adopts a least square method to identify and separate gyro vibration signals and corresponding errors. And a demodulation error introduced by the change rate of the standing wave azimuth angle under the high dynamic condition is compensated, so that the aim of improving the resolving and full-angle control precision of the gyroscope vibration signal under the high dynamic condition is fulfilled. Compared with the prior art, the technical scheme provided by the invention can solve the technical problem of overlarge signal demodulation error of the hemispherical resonator gyroscope under a high dynamic condition in the prior art.
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Citation Information
Cited By
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