کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
755627 | 1462555 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Generation of Non-Gaussian Random Vibration Excitation Signal for Reliability Enhancement Test Generation of Non-Gaussian Random Vibration Excitation Signal for Reliability Enhancement Test](/preview/png/755627.png)
During environment testing, the time histories of some dynamic environments follow non-Gaussian distribution. It is always assumed that the random vibration simulated follows Gaussian distribution, because the traditional digital random vibration control system can only supply the random vibration excitation signal of Gaussian. To simulate the real environment of product, a method is developed in this paper that can generate non-Gaussian random signal with specified power spectrum density (PSD), skewness and kurtosis by shot noise. In this way, non-Gaussian random vibration can be produced on traditional electrodynamic shaker. It solves the problems of spectral valley and energy shortage in low frequency on omni-axis shaker. At last, the wavelet is used to analyze the non-Gaussian signal.
Journal: Chinese Journal of Aeronautics - Volume 20, Issue 3, June 2007, Pages 236-239