基于小波变换的金属橡胶干摩擦系统阻尼识别

针对金属橡胶隔振器阻尼系数难于识别的特点，探讨了一种基于小波变换的干摩擦阻尼识别方法，针对金属橡胶隔振器在自由振动下的动态响应信号进行包络的提取，同时采用了Hilbert变换和Morlet小波变换这两种包络提取方法，并将分析结果与利用常规阻尼识别方法得出的结果进行了对比。结果表明，该方法具有足够的精度，并且易于实现。

Wavelet transformation based damping identification for metal rubber dry friction system

Aimed at the characteristics of difficult identification on damping coefficients in metal rubber isolator, a kind of identification method of dry friction damping based on wavelet transformation has been explored. The picking up of envelope has been carried out directed against the information of dynamic response under free vibration of metal rubber isolator, simultaneously two kinds of envelope collection method of Hilbert transformation and Morlet wavelet transformation were also being adopted. A contrast has been conducted on the result of analysis with the obtained result by using the conventional damping identification method. The result shows that this method possesses sufficient precision and is easy for implementation.