机械耦合振动响应双谱解卷积识别方法

Identify Response of Machine Coupling Vibration Based on Bispectra-blind Source Separation for Convolved Signals

在机械故障诊断中,从被监测机器测得的振动信号除噪声干扰外,还常混叠有其他机器振动。分析了振源卷积混叠机理,提出了一种双谱解卷积方法,并从盲源分离和波形恢复的角度对新方法的实用背景进行了概括。实验结果证明了所提方法的可行性和可靠性。

In implementing the fault diagnosing of machine, the measured vibration signals, include both noise and the signals from other machines. The mechanism of vibration source convolution is analyzed, and a method for bispeetra - blind source separation for convolved signals is proposed. Moreover, a summary to the application of this new method in blind source separation and waveform restoration is made. Engineering experiment shows the applicability and reliability of the method under discussion.