基于LabVIEW软件的时频域测试研究
发布时间：2019-05-13 11:14
【摘要】：在测试软件LabVIEW平台的基础上,研究了利用时频域测试方法来分析信号在时-频平面上的能量分布情况。此测试分析方法利用短时傅里叶变化STFT的基本原理,对一些非平稳的信号进行分析,能很好地描述信号的频率如何随时间而变化。对长度有限的信号进行施加窗函数处理,从而来更好地分析窗函数的不同选择对时频域分析的影响,具有一定的优越性和创新性。
[Abstract]:On the basis of the testing software LabVIEW, the time-frequency domain testing method is used to analyze the energy distribution of the signal in the time-frequency plane. This test and analysis method uses the basic principle of short-time Fourier variation STFT to analyze some non-stationary signals, which can well describe how the frequency of the signal changes with time. In order to better analyze the influence of different selection of window function on the analysis of time and frequency domain, it has some advantages and innovations to apply window function to the signal with limited length and to process the window function in order to better analyze the influence of window function on time and frequency domain analysis.
【作者单位】： 宁波吉利罗佑发动机零部件有限公司;浙江吉利罗佑发动机有限公司;
【分类号】：TN911.7
，
本文编号：2475833
[Abstract]:On the basis of the testing software LabVIEW, the time-frequency domain testing method is used to analyze the energy distribution of the signal in the time-frequency plane. This test and analysis method uses the basic principle of short-time Fourier variation STFT to analyze some non-stationary signals, which can well describe how the frequency of the signal changes with time. In order to better analyze the influence of different selection of window function on the analysis of time and frequency domain, it has some advantages and innovations to apply window function to the signal with limited length and to process the window function in order to better analyze the influence of window function on time and frequency domain analysis.
【作者单位】： 宁波吉利罗佑发动机零部件有限公司;浙江吉利罗佑发动机有限公司;
【分类号】：TN911.7
，
本文编号：2475833
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