航空电缆TDR数据去噪与故障定位新方法  

New Method of Data Denoising and Fault Location for Aviation Cable TDR

作　　者：翟禹尧 郭纲[1] 

机构地区：[1]空军航空大学,吉林长春130022

出　　处：《现代防御技术》2016年第6期128-134,共7页Modern Defence Technology

摘　　要：根据时域反射法(TDR)原理建立航空电缆绝缘故障模型,进行仿真模拟,并加入高斯白噪声,得到时域反射法仿真模拟数据。由于噪声的存在,导致绝缘故障处的反射信号不明显,不易对故障位置定位。提出一种新的时域反射法数据的去噪与故障定位方法,利用希尔伯特黄变换(HHT)对时域反射法数据进行去噪,并对故障位置进行精确定位,误差小于1%。结果表明,该方法对航空电缆时域反射法数据的噪声去除与故障定位都具有良好的效果。According to the principle of time domain insulation fault model is set up. By adding white gaussian reflectometry （TDR）method, an aviation cable noise, simulation data of TDR is obtained. Due to the presence of noise, the reflected signal of insulation fault is not obvious, so it is difficult to do fault location. A new method for TDR data denoising and fault location is proposed. By using the Hilbert- Huang transform （HHT） for TDR data denoising and fault location, high SNR data and accurate fault localization are achieved, and the error is less than 1%. Results show that the new method of noise removal and fault location of the aircraft cable TDR data is of good effect.

关 键 词：航空电缆 时域反射法 电缆检测 希尔伯特黄变换 信号去噪 故障定位 

分 类 号：TM24[一般工业技术—材料科学与工程] TP391.9[电气工程—电工理论与新技术]