非平稳性量度及其在齿轮箱噪声分析中的应用

A measure for non-stationarity with application to gear box noise

摘要: 从时变噪声过程的演变矢量描述出发,提出了非平稳性量度Q,同时包括了信号功率的不平稳性和谱形状的不平稳性。作为一个单参数为不同过程间非平稳性的比较,提供了一个可资比较的量。并将非平稳性量度应用到所谓的齿轮箱“杂声”分析中。

Abstract: From the evolutionary vector description of slowly-varying noise processes, a measure for non-stationarity is developed It includes both the non-stationarities of power and of spectrum shape. As a single parameter, it is a comparable quantity for different processes. Application to the analyses of gear box noise is presented.