摘要
建立反射式光纤电流互感器R-FOCT(Reflecting Fiber-optic Current Transducer)的数学模型,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。
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.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2007年第7期88-92,共5页
Opto-Electronic Engineering
关键词
光纤电流传感器
传递函数
频率特性
fiber-optic current transducer
transfer function
frequency characteristic
