Fault Diagnosis Expert System for Hydraulic System Based on Two-Dimensional United Fuzzy Method

doi:10.3969/j.issn.1674-0696.2012.06.31

Journal of Chongqing Jiaotong University(Natural Science) ›› 2012, Vol. 31 ›› Issue (6): 1227-1231.DOI: 10.3969/j.issn.1674-0696.2012.06.31

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Fault Diagnosis Expert System for Hydraulic System Based on Two-Dimensional United Fuzzy Method

Luo Tianhong^1,2，Xiong Yu²，Sun Dongmei³

1. School of Economy ＆ Business Administration，Chongqing University，Chongqing 400030，China; 2. School of Mechatronics ＆ Automotive Engineering，Chongqing Jiaotong University，Chongqing 400074，China; 3. Department of Petroleum ＆ Gas Equipment，Petroleum Exploration ＆ Development Research Institute，Beijing 100083，China

Received:2012-03-29 Revised:2012-06-11 Online:2012-12-15 Published:2014-10-31

二维联合模糊的液压系统故障诊断专家系统

罗天洪^1,2，熊钰²，孙冬梅³

1. 重庆大学经济与工商管理学院，重庆400030; 2. 重庆交通大学机电与汽车工程学院，重庆400074; 3. 中国石油勘探开发研究院采油采气装备研究所，北京100083

作者简介:罗天洪(1975—)，男，四川乐至人，教授，博士，主要从事工程机械设计、多领域仿真等方面的研究。E-mail:tianhong.luo@163.com。
基金资助:
中国博士后基金项目( 20070420714) ; 重庆市“企业科技特派员”科技项目( CSTC，2009DA0001-B)

Abstract

Abstract: Online fault diagnosis for the hydraulic system which is based on the two-dimensional united fuzzy method is offered， and a dual of fault diagnosis mode combing the wavelet analysis with fuzzy evaluation have been used． The fuzzy array of the fault diagnosis expert system has been structured by using the united weighting allocation method，then an objective and reasonable vector of fault symptoms is obtained by using the theory of evaluation of complex sample variance． In that way，the swiftness and preciseness of fault diagnosing are validated． At the end，the fault diagnosis expert system for hydraulic system of truck crane has been set up．

Key words: wavelet analysis, united weighting allocation method, fuzzy fault diagnosis, expert system

摘要： 提出了基于二维联合模糊评判的液压系统故障在线诊断方法; 用MATLAB 小波分析与模糊评判相结合的双重故障诊断模式，运用联合权重分配法构建故障诊断专家系统模糊矩阵; 采用复杂样本方差估计，得出一个客观合理的故障征兆向量，实现了液压系统故障诊断的实时性，精确性; 建立了起重机液压系统故障诊断专家系统。

关键词: 小波分析, 联合权重分配法, 模糊故障诊断, 专家系统

CLC Number:

TH215

Luo Tianhong，Xiong Yu，Sun Dongmei. Fault Diagnosis Expert System for Hydraulic System Based on Two-Dimensional United Fuzzy Method[J]. Journal of Chongqing Jiaotong University(Natural Science), 2012, 31(6): 1227-1231.

罗天洪，熊钰，孙冬梅. 二维联合模糊的液压系统故障诊断专家系统[J]. 重庆交通大学学报（自然科学版）, 2012, 31(6): 1227-1231.

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Fault Diagnosis Expert System for Hydraulic System Based on Two-Dimensional United Fuzzy Method

二维联合模糊的液压系统故障诊断专家系统

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