| 反射式光纤电流传感器频率特性计算和测试 |
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| 引用本文： | 张朝阳,张春熹,王夏霄,梁冰.反射式光纤电流传感器频率特性计算和测试[J].光电工程,2007,34(7):88-92. |
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| 作者姓名： | 张朝阳 张春熹 王夏霄 梁冰 |
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| 作者单位： | 北京航空航天大学,仪器科学及光学工程学院,北京,100083 |
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| 摘 要： | 建立反射式光纤电流互感器R-FOCT(Reflecting Fiber-optic Current Transducer)的教学模型,得到描写模型的差分方程,推导出与之对应的传递函数,仿真系统的频率特性.根据电流传感器的工作特点,提出应用锁定放大器SR830测试R-FOCT频率特性的方法.比较测试数据和仿真结果,结果表明,系统的带宽计算和测量方法是可信的,得到了系统带宽大于6kHz的结论.
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| 关 键 词： | 光纤电流传感器 传递函数 频率特性 |
| 文章编号： | 1003-501X（2007）07-0088-05 |
| 收稿时间： | 2006/6/20 |
| 修稿时间： | 2006-06-202007-03-26 |
Frequency characteristics of reflecting fiber-optic current transducer |
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| ZHANG Chao-yang,ZHANG Chun-xi,WANG Xia-xiao,LIANG Bing.Frequency characteristics of reflecting fiber-optic current transducer[J].Opto-Electronic Engineering,2007,34(7):88-92. |
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| Authors: | ZHANG Chao-yang ZHANG Chun-xi WANG Xia-xiao LIANG Bing |
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| Affiliation: | School of Instrument and Optoelectronic Engineering, Beihang University, Beifing 100083, China |
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| Abstract: | A mathematical model for Reflecting Fiber-optic Current Transducer (R-FOCT) was established. The difference equation and transfer function of the system model were deduced. Frequency characteristics corresponding to the model were simulated. According to the principle of the Current Transducer, a method based on Lock-in Amplifier SR830 was put forward for testing frequency characteristics. Credibility of the calculation and testing method were verified by comparing the testing data and simulation results. The conclusion that the bandwidth of R-FOCT exceeded 6kHz was approved. |
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| Keywords: | fiber-optic current transducer transfer function frequency characteristic |
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