【摘要】 提出共振解调技术的数学模型,求解数学模型的脉冲响应,为该技术在正常低频振动中提取所夹带的微小冲击的应用提供了理论依据。介绍小波分析提取微小冲击信息在诊断轴承初始故障中的应用,通过MATLAB数字仿真和现场应用实例,取得与共振解调技术相同的应用效果,说明小波分析和共振解调技术在提取齿轮、轴承机械故障的微小冲击的应用上是非常有效的。更多还原

【Abstract】 A mathematical model of the resonance demodulation technology is put forward. The model provides the theoretical basis for the use of the technology to extract the weensy impulse signal from the normal low-frequency vibrating signal. A method based on wavelet analysis is used to extract the weensy impulse information is introduced too. Simulation result and practical application show that both wavelet analysis and resonance demodulation are effective to extract the weensy impulse from the mechanical fault caused by gear and bearing.更多还原