摘要
本文研究了非平稳随机振动信号的瞬时功率谱.首先评述了现有瞬时功率谱的优缺点,然后提出了一种新的瞬时功率谱,并证明了这种新型瞬时功率谱的主要性质,最后通过一个例子对两种瞬时功率谱进行了对比分析.
The instantaneous power spectrum of nonstationary random vibration signals is discussed in this paper.First of all,the advantages and short comings of existing instantaneous power spectrums are reviewed.Then a new kind of instantaneous power spectrum is advanced and its main properties are proved.Finally an example is quoted to compare the new instantaneous power spectrum with the existing one.
出处
《振动工程学报》
EI
CSCD
1990年第3期25-32,共8页
Journal of Vibration Engineering
关键词
功率谱
随机振动
信号分析
power spectrum
signal analysis
random vibration
spectrum analysis
