摘要
改进的快速富里叶变换的计算方法能够在采样的持续时间不是信号的周期的整数倍时,准确地提供此信号中各周期分量的特性。它可以用于分析周期未知或者周期经常变化的信号。本文介绍了它的计算方法,及其在轧钢机中由轧辊偏心引起的变化信号补偿中的应用。
The method of Modified Fast Fourier Transform (MFFT) can be used to compute the exact characteristics of the components of a periodic signal when sampling duration is not equal to an integral multiple of the fundamental. It can be used to analyze a signal whose period is unkown or varied. An application to the compensation of the periodical thickness variation of the strip produced by eccentricities in a cold mill rolling is presented.
出处
《自动化学报》
EI
CSCD
北大核心
1990年第2期151-155,共5页
Acta Automatica Sinica
