Q scan, a qualitative analysis method, is analogous to velocity scanning or frequency scanning.
前者类似于速度扫描或频率扫描，属于一种定性分析方法；
The method USES FFT instead of the cyclic frequency scanning.
该方法利用FFT运算代替循环频率遍历搜索。
Based on the analytic method of cyclic spectrum density, the paper pointed out that the impact frequency could be extracted effectively with the help of scanning cyclic frequency domain.
通过对循环谱密度分析方法的特性分析，指出应用循环谱密度分析方法可以在循环频率域有效提取出滚动轴承的冲击故障频率。
应用推荐