Background

In general, diagnostics can be defined as the procedure of mapping the information obtained in the measurement space to the presence and magnitude of faults in the fault space. These measurements, and especially their nonlinear features, have the potential to be exploited to detect changes in dynamics due to the faults.

Purpose

We have been developing some interesting techniques for fault diagnostics with gratifying results.

Methods

These techniques are fundamentally based on extracting appropriate features of nonlinear dynamical behavior of dynamic systems. In particular, this paper provides an overview of a technique we have developed called Phase Space Topology (PST), which has so far displayed remarkable effectiveness in unearthing faults in machinery. Applications to bearing, gear and crack diagnostics are briefly discussed.

中文翻译：

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非线性系统中基于振动的故障诊断的相空间拓扑方法综述

背景

通常，诊断可以定义为将在测量空间中获得的信息映射到故障空间中故障的存在和大小的过程。这些测量，尤其是它们的非线性特征，有可能被利用来检测由于故障引起的动力学变化。

目的

我们一直在开发一些有趣的故障诊断技术，并取得令人满意的结果。

方法

这些技术从根本上基于提取动态系统非线性动力学行为的适当特征。特别是，本文概述了我们开发的一种称为相空间拓扑（PST）的技术，迄今为止，该技术在发现机械故障方面显示出显着的有效性。简要讨论了轴承，齿轮和裂纹诊断的应用。