基于信号结构特性的中长期预报方法研究

摘要

The paper focuses on the prediction method based on structural properties. First, we present a signal description method which adopts the characters of vibration signal of large machine-sets. Based on this, forecasting methods based on structural properties are constructed and a series of prediction algorithms are also presented. Substantial results were obtained in predicting running condition of large rotating machine in practice.%将信号的结构描述方法应用于机械故障的中长期预报，构造了新的预报方法——基于信号结构特性的中长期预报方法。首先，在分析机组长期运行状态变化趋势的几种典型情况的基础上，提出了适合描述大机组运行信号的结构特性描述方法；然后，以结构描述为基础构造了新的预报算法；数字实例的结果表明，该方法在机组运行状态预报中具有较好的效果。