摘要
对试验中采集的振动信号零点漂移现象进行了分析,零点漂移严重影响数据统计特征值的求取并使得频谱分析失真,在进行数据处理之前必须对零点漂移进行检测,选择适当的方法去除。文中针对阶跃型零点漂移去除方法进行了研究,给出了一种滑动分段平均去除零点漂移方法,试验数据处理证明了文中提出方法的可行性。
Study on the phenomenon of zero excursion for vibration signal in the examination has important meaning. Zero excursion can affect the acquisition of statistics eigenvalue and make the frequency spectrum distortion, thus, it needs to check if any zero excursion in the signal and choice adequacy method to wipe off the phenomenon of zero excursion. The method of wiping off abnormity zero excursions has studied in this paper, the results of data processing in test show that the method of this paper is accurate.
出处
《强度与环境》
2008年第4期61-64,共4页
Structure & Environment Engineering
关键词
振动信号
零点漂移
滑动平均
vibration signal
zero excursion
slippage average
