典型文献
Fast Rail Defect Inspection Based on Half-Cycle Power Demodulation Method and FPGA Implementation
文献摘要：
In this paper,a fast-speed and real-time online rail inspection method based on half-cycle orthogonal power demodulation algorithm is proposed. For this method,the power characters of de-tection signal which represent the degree of rail track can be calculated using only half-cycle detec-tion signal because of the symmetry characteristic of detected sine signal and reference signal. The theoretical analysis,simulation results and experiment results show that the demodulation preci-sion of proposed method is almost equal to fast Fourier transform (FFT) demodulation method and orthogonal demodulation method,but has high demodulation efficiency and less FPGA resources cost. A high-speed experiment system based on three coils structured sensor is built for rail inspec-tion experiment at a moving speed of 200 km/h. The experiment results show that proposed meth-od is more effective for rail inspection and the time resolution of proposed method is double of clas-sic method that based on FFT and orthogonal.
文献关键词：
中图分类号：
作者姓名：
Yu Miao;Jiwei Huo;Ze Liu;Ying Gao;Chengfei Wang
作者机构：
School of Electronic and In-formation Engineering, Beijing Jiaotong University, Beijing 100044, China;Stand-ards & Metrology Research Institute, China Academy of Railway Sciences, Beijing 100081, China
文献出处：
引用格式：
[1]Yu Miao;Jiwei Huo;Ze Liu;Ying Gao;Chengfei Wang-.Fast Rail Defect Inspection Based on Half-Cycle Power Demodulation Method and FPGA Implementation)[J].北京理工大学学报（英文版）,2022(02):185-195
A类：
inspec
B类：
Fast,Rail,Defect,Inspection,Based,Half,Cycle,Power,Demodulation,Method,FPGA,Implementation,this,paper,fast,speed,real,online,rail,inspection,method,half,cycle,orthogonal,power,demodulation,algorithm,proposed,For,characters,tection,signal,which,represent,degree,track,can,calculated,using,only,because,symmetry,characteristic,detected,sine,reference,theoretical,analysis,simulation,results,experiment,show,that,preci,sion,almost,equal,Fourier,transform,FFT,but,has,high,efficiency,less,resources,cost,system,three,coils,structured,sensor,built,moving,more,effective,resolution,double,clas,sic
AB值：
0.538088
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