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本文针对机械系统中通常存在确定性周期激励的事实 ,论证了周期干扰成分的存在对提取的随机减量特征信号的影响 ,基于数字滤波技术提出了一种从周期干扰环境中提取随机减量特征信号的简便方法。在回转机械稳定性监测中的应用实例表明本文提出的方法是有效的。
Aiming at the fact that the deterministic periodic excitation usually exists in the mechanical system, this paper proves the influence of the periodic interference component on the extracted random reduction feature signal. Based on the digital filtering technology, this paper proposes a method to extract the random reduction feature from the periodic interference environment Easy way to signal. The application example in the stability monitoring of rotary machinery shows that the method proposed in this paper is effective.