在化二氧化感应振动环陀螺仪中进行局部热调节
Kai Wu1, Xinyu Wang1, Qingsong Li2
1College of Intelligence Science and Technology, National University of Defense Technology, Changsha, 410073, China.
Microsystems & nanoengineering
|March 2, 2026
概括
局部化热调节有效地减少了诱导振动环陀螺仪 (IVRGs) 中的频率分裂. 这一进步提高了在恶劣环境下惯性测量的精度.
科学领域:
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
背景情况:
- 感应振动环陀螺仪 (IVRGs) 与电容式陀螺仪相比,具有更高的抗冲击能力,非常适合恶劣的环境.
- 高精度IVRG操作需要将变态模式之间的频率分割最小化,以防止错误.
- 传统的静电调与电磁IVRG配置不兼容.
研究的目的:
- 提出和验证本地化热调技术,用于IVRG中的实时频率调整.
- 为了解决电磁陀螺仪设计中的传统调方法的局限性.
- 为了提高 IVRG 的精度和可靠性,用于苛刻的应用.
主要方法:
- 开发了一种局部化的热调技术,使用图案式电极进行可控的朱尔加热.
- 为了调节频率,利用了化的温度依赖的模量.
- 采用有限元模拟来优化电极设计并最大限度地减少热合.
- 使用局部热电极制造和特征化原型IVRG.
主要成果:
- 实现了高效的频率分裂抑制,将分裂减少到14mHz.
- 从0.928°/s降低到0.146°/s,显著减少了取决于角度的偏差.
- 改进了尺度因子非线性,从43.21 ppm升至61.3 ppm,偏差不稳定性从4.8°/h降至0.67°/h.
- 在-40°C至60°C的温度下表现出强的性能,对质量因素的影响微不足道.
结论:
- 局部热调是感应振动环陀螺仪的可行和有效策略.
- 这种技术可以实时调节频率,这对于高精度全角模式操作至关重要.
- 该方法提高了IVRG性能,为在恶劣环境中改进惯性测量铺平了道路.
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