光纤陀螺仪的温度偏移补偿基于一种改进的方法
Xinwang Wang1, Ying Cui2,3,4, Huiliang Cao5
1School of Instrument Science and Engineering, Southeast University, Nanjing 210018, China.
Micromachines
|September 28, 2023
概括
这项研究引入了一种改进的光纤陀螺仪 (FOG) 信号消噪方法,显著减少温度漂移并提高精度. 增强的多尺度排列完全集体实证模式分解与适应性噪声 (MPE-CEEMDAN) 方法实现了卓越的性能.
科学领域:
- * 仪器仪表与测量科学 * 仪表仪表与测量科学
- * 信号处理和数据分析
背景情况:
- *光纤陀螺仪 (FOG) 对于导航和方向感应至关重要.
- *FOG性能受到温度漂移和各种噪声源的显著影响,需要先进的信号处理技术.
- *现有的无声化方法往往难以有效地解决复杂的噪声模式和FOG信号中的温度诱导错误.
研究的目的:
- * 开发和验证一种改进的信号处理方法,以提高FOG的准确性.
- *通过解决混合噪声和温度漂移,有效地消除FOG输出信号.
- * 提高FOG在不同温度条件下的整体性能和可靠性.
主要方法:
- *利用多尺度顺序完全集体实证模式分解与适应性噪声 (MPE-CEEMDAN) 来将信号分解为内在模式函数 (IMF).
- *采用自适应卡尔曼波器 (AKF) 来消除混合噪声组件的噪声.
- * 通过使用灰狼优化器-最小方形支持矢量机器 (GWO-LSSVM) 建立了光纤陀螺仪温度补偿模型,以减轻温度漂移.
主要成果:
- * 拟议的MPE-CEEMDAN方法,结合AKF和GWO-LSSVM,显著减少了FOG温度漂移在-30°C至60°C的范围内.
- *量化噪声 (Q) 因数从6.1269×10−3降低到1.0132×10−4.
- *偏差不稳定性 (B) 从1.53×10−2减少到1×10−3,角速度 (N) 的随机步行从7.8034×10−4减少到7.2110×10−6.
结论:
- * 改进的基于MPE-CEEMDAN的方法有效地拒绝FOG输出信号,从而提高了准确性.
- * AKF和GWO-LSSVM的集成提供了一个强大的解决方案,以减轻FOG中复杂的噪音和温度漂移.
- *开发的算法为提高光纤陀螺仪在苛刻应用中的性能和可靠性提供了有希望的方法.
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