【摘要】 介绍了通过基于快速傅立叶变换(FFT)的谱分析确定综框的动态特性。研究了综框变化信号的特性。比较了两个不同厂家生产的综框的模态参数和能量谱密度。讨论了评价综框质量的能量谱的差异。更多还原

【Abstract】 The method of impact excitation testing with Fast Fourier Transform (FFT) based on spectrum analyzer to determine the dynamic characteristics of a heald frame is introduced. The characteristics of heald frame vibration signature are studied. The modal parameters and power spectral density of two kinds of frames produced by different mills are compared. The differences in the power spectrum for estimating the quality of heddle frame are found.更多还原