摘要
针对传统的快速傅里叶变换(FFT)算法在进行列车振动频谱分析中存在栅栏效应和频谱泄漏现象,不能对列车振动加速度信号进行准确测量的问题,提出一种基于三根谱线来修正频率和幅值的计算方法,通过加窗和插值来改善计算的准确度。仿真证明了该算法的高精度和简单易实现的特点。
According to conventional Fast Fourier Transform（FFT） algorithm not fit to analyze train vibration spectrum due to its leakage and picket fence effects, which could not detect train vibration acceleration accurately, an improved algorithm based on three spectral lines was presented using window functions and interpolation algorithms to correct the measurement. The simulation results had verified the effectiveness and practicability of the algorithm.
出处
《机车电传动》
北大核心
2014年第5期95-98,共4页
Electric Drive for Locomotives
关键词
三谱线
快速傅里叶变换
插值
横向失稳
窗函数
蛇形运行
列车失稳
three spectrum lines
FFT
interpolation
transverse instability
window function
snaking motion
train instability
