| 摘要: |
| 针对工业过程故障诊断中数据的动态性、非高斯性和非线性特点,提出一种基于动态独立成分的单类支持向 量机(0CSVM)方法。为了分析数据的动态特性和非高斯性，应用动态独立成分分析(DICA)方法提取数据变ft中的 动态独立成分作为特征信息,基于特征信息建立0CSVM模型并构造非线性监控统计童。检测到故障后,计算故障 数据与故障模式数据决策超平面的相似度，通过相似度分析识别故障模式。在TenneSSee Eastman基准过程上的仿 真结果表明，提出的方法能够比单类支持向量机更有效地检测过程故障，并且能够正确识别故障模式。 |
| 关键词: 单类支持向量机 动态独立成分分析 故障检测 故障识别 |
| DOI：10.3969/j.issn.1673-5005.2012.03.032 |
| 分类号:TP 277 |
| 基金项目:山东省自然科学基金项目(ZR2011FM014)；中央高校基本科研业务费专项资金(10CX04046A) |
|
| One-class support vector machine based on dynamic independent component and its application to fault diagnosis |
|
DENG Xiao-gang,TIAN Xue-min
|
|
(College of Information and Control Engineering in China University of Petroleum，Qingdao 266580，China )
|
| Abstract: |
| In order to analyze dynamic, nou-Gaussian and nonlinear property of data in industrial process fault diagnosis, one-class support vector machine based on dynamic independent component was presented. Dynamic independent component analysis was firstly applied to deal with dynamic and non-Gaussian data to obtain dynamic independent components as feature information. Then one-class support vector machine was used to build nonlinear monitoring statistics based on feature information. After fault was detected, the similarity between new fault data and fault pattern data was computed for fault pattern identification according to their decision hyper planes. The simulation results on Tennessee Eastman benchmark process show that the proposed method can detect fault more effectively than one-class support vector machine and detect diagnosis fault pattern correctly. |
| Key words: one-class support vector machine dynamic independent component analysis fault detection fault identification |
