Hemispherical harmonic oscillator anchor rod size optimization method and device

By optimizing the dimensions and parameters of the hemispherical resonator anchor, and using a two-dimensional axisymmetric finite element model and thermodynamic field simulation, the problems of long design cycles and insufficient performance in existing technologies were solved, achieving efficient anchor optimization and improving the performance and sensitivity of the hemispherical resonator gyroscope.

CN121920152AActive Publication Date: 2026-04-24HUNAN 208 ADVANCED TECH CO LTD
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Patent Information

Application Number
CN202610357384.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-23
Publication Date
2026-04-24
Estimated Expiration
2046-03-23

AI Technical Summary

Technical Problem

Existing technologies lack a systematic design approach to optimize the geometric parameters of hemispherical resonator anchors, resulting in long design cycles, high costs, and difficulty in achieving optimal performance. Furthermore, temperature gradients and energy leakage lead to gyroscope drift and reduced sensitivity.

Method used

A hemispherical harmonic oscillator anchor size optimization method is adopted. Through a two-dimensional axisymmetric finite element model and transient thermo-field simulation, the anchor parameters are optimized to suppress temperature gradient and energy leakage. Combined with frequency calculation, the strength requirements are met and the sensitivity is improved.

Benefits of technology

It achieves the goal of suppressing temperature gradients and reducing energy leakage while meeting strength requirements, obtaining reasonable frequency and high sensitivity, improving the performance of hemispherical resonant gyroscopes, and having fast iterative calculation speed to meet engineering application needs.

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Abstract

The invention discloses a hemispherical harmonic oscillator anchor rod size optimization method and device, and the method comprises the steps: S1, obtaining the size and attribute parameters of a hemispherical harmonic oscillator, S2, sampling the parameters of an anchor rod, and obtaining the parameter sampling value of the anchor rod; s3, calculating the frequency of the hemispherical harmonic oscillator to obtain a calculation frequency value of the hemispherical harmonic oscillator, judging whether the calculation frequency value is smaller than or equal to a set frequency upper limit value or not, if yes, turning to step S4, and if not, turning to step S2; and S4, constructing a two-dimensional axisymmetric finite element model of the hemispherical harmonic oscillator, performing two-dimensional thermal field transient simulation after obtaining simulated boundary conditions, judging whether the temperature difference between the lip edge of the hemispherical harmonic oscillator and the center of the top end of the anchor rod meets the requirement within specified time or not after simulation is completed, if yes, outputting a specific parameter value of the anchor rod, and if not, turning to the step S2. The anchor rod is optimized, and the performance of the hemispherical resonator gyroscope can be comprehensively improved while the strength requirement is met.
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