时域信号复杂度指标的建立及其在机械故障诊断技术中的应用

The Establishement of Signal Complexity Index in Time Domain and Its Application to Machine Unit Diagnostic Process

通过ＷａｖｅｆｏｒｍＭａｔｃｈｉｎｇ法对时域信号的畸变特性进行了定量描述，建立了时域波形复杂度指标（ＩＷＣ）和轴心轨迹复杂度指标（ＩＯＣ），并进行了试验验证。这２个指标不仅对机组运行状态反映灵敏，而且也完全适用于在变工况条件下对机组的运行状态进行评估。

This paper describes the distortion characteristics of the waveform by waveform matching method.The indexes of IWC and IQC are built,moreover,they are tested and verified by experiments.The two indexes not only reflect the variation of machine unit ′s operating conditions effectively,but also meet to the need of condition evaluation well during machine unit′s transition process.