| 微石英音叉陀螺角速度信号提取方法的研究 |
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| 引用本文： | 王莹,孙雨南,秦秉坤,崔芳.微石英音叉陀螺角速度信号提取方法的研究[J].北京理工大学学报,2003,23(2):241-244. |
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| 作者姓名： | 王莹 孙雨南 秦秉坤 崔芳 |
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| 作者单位： | 1. 大连海事大学,信息工程学院,辽宁,大连,116026
2. 北京理工大学,信息科学技术学院光电工程系,北京,100081 |
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| 基金项目： | 总装备部科研项目;0219.1.6.BO0118; |
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| 摘 要： | 研究微石英音叉陀螺的工作原理和微弱角速度信号的提取方法．从石英音叉陀螺敏感振动的近似动力学方程出发，推导了由哥氏惯性力引起的稳态和暂态振动信号以及陀螺检测输入角速度的灵敏度，并分析了材料各向异性与加工误差引起的正交误差信号特点，在此基础上分析了包含角速度信息的稳态信号与暂态信号、正交误差信号的差异，指出利用相关检测技术可在强背景噪声条件下提取出角速度信号，并通过数字仿真验证了角速度提取方案的可行性．
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| 关 键 词： | 石英陀螺 哥氏力 信号处理 相关检测 |
| 文章编号： | 1001-0645(2003)02-0241-04 |
| 收稿时间： | 2002/6/14 0:00:00 |
| 修稿时间： | 2002年6月14日 |
Extraction of Angular Rate Signal for Micro Quartz Tuning Fork Gyroscopes |
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| WANG Ying,SUN Yu nan,QIN Bing kun and CUI Fang.Extraction of Angular Rate Signal for Micro Quartz Tuning Fork Gyroscopes[J].Journal of Beijing Institute of Technology(Natural Science Edition),2003,23(2):241-244. |
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| Authors: | WANG Ying SUN Yu nan QIN Bing kun and CUI Fang |
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| Institution: | WANG Ying 1,SUN Yu nan 2,QIN Bing kun 2,CUI Fang 2 |
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| Abstract: | The principle of micro quartz tuning fork gyroscope and the detecting method for weak angualr rate signals are studied. Based on the approximate dynamical equation of sensing vibration, the steady and transient vibration signals caused by Coriolis forces are studied, and the quadrature error signal caused by the anisotropy of quartz and the fabrication tolerance is analyzed. Differences among the steady signal which contains the angular rate information, the transient signal and quadrature error signal are analyzed, and the method of correlation detection can be used to extracte the input angular rate signal. The practicability of the method is verified by digital simulation at the end. |
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| Keywords: | quartz gyroscope Coriolis forces signal processing correlation detection |
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