铁道科学与工程学报2017，Vol.14Issue(9)：1851-1858,8.
基于ZFFT的轨道波磨高精度弦测算法研究
A discussion about high-precision chord measurement algorithm for rail corrugation based upon ZFFT
摘要
Abstract
A chord measurement is one of the most important rail corrugation's inspecting method, but the theoretical defect restricts it from the increasing recovery precision and the efficiency at the same time. In order to solve this problem and meet the demand of rail corrugation's measurements in engineering, a new ZFFT high-accuracy algorithm was proposed. Complex modulation was utilized to shift target frequency to zero point, after removing high frequency noises, conjugating extension and inverting Fourier Transform, track irregularities were calculated. The data simulation and test results showed that this method can improve the accuracy of measurements an their values with less space and time consumption, hence, it is suitable for engineering application.关键词
轨道波磨/逆滤波/弦测法/ZFFTKey words
rail corrugation/inverse filter/chord measurement method/ZFFT分类
交通工程引用本文复制引用
殷华,朱洪涛..基于ZFFT的轨道波磨高精度弦测算法研究[J].铁道科学与工程学报,2017,14(9):1851-1858,8.基金项目
国家自然科学基金地区科学基金资助项目(51468042) （51468042）
江西省自然科学基金资助项目(20142BAB206003) （20142BAB206003）
