Method of Testing and Calculating for Frequency Characteristics of Digital Closed-Loop FOG
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摘要: 建立数字闭环光纤陀螺FOG(fiber-optics gyroscopes)的数学模型,得到描写模型的差分方程,推导出与之对应的微分方程和传递函数.分析传递函数与FOG模型的误差,得出数字闭环FOG频率特性的计算方法.研究在普通速率转台测试数字闭环FOG频率特性的方法.并将测试数据与计算数据加以比较验证.计算和测试的结果证明了该计算的测试方法是准确和有效的.Abstract: A mathematical model for digital closed-loop FOG(fiber-optics gyroscropes) was established to get the difference equation of the model. Also, the differential equation and transfer function corresponding to the model were deduced. Frequency characteristics calculation of the digital closed-loop FOG was conducted based on error analysis between the transfer function and the model. A method found for testing frequency characteristics of the digital closed-loop FOG on common speed platform was established. The validity and veracity of the methods were verified by comparing the testing and calculation data.
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Key words:
- gyroscopes /
- fiber-optics /
- frequency characteristic /
- digital signals
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[1] 拉宾纳L R. 数字信号处理的原理与应用[M]. 史令启译.北京:国防工业出版社, 1982. [2]胡寿松. 自动控制原理[M]. 北京:国防工业出版社, 1997. [3]Lefever H. The fiber-optic gyroscope[M]. USA:Artech house,1993. [4]薛定宇. 控制系统计算机辅助设计[M]. 北京:清华大学出版社, 1996. -
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