Research on Fault Diagnosis of Hydraulic System for Shield Machine Based on Improved Moving Windows Algorithm of Principal Component Analysis

Abstract

Abstract:

For fault diagnosis of hydraulic system of a shield machine,this paper proposed applying multi-block theory to this machine.Firstly multi-block principal component analysis of hydraulic system of a shield machine was expounded,and the whole system was divided into many sub-systems of the hydraulic system,
then an improved moving windows algorithm was adopted to analyse each sub-system,and finally the erector hydraulic system was taken as research object.The results show this algorithm is effective.

Key words: shield machine, hydraulic system, moving windows algorithm, principal component analysis, fault diagnosis

摘要：

将主元分析的分层理论应用于盾构机液压系统的故障诊断,首先阐述了盾构液压系统的PCA分块思想,将盾构液压系统整体分成多个子系统，然后对每一个子系统采用改进型滑动窗算法进行分析，最后以盾构拼装机液压系统为仿真对象进行了仿真分析,仿真结果证明了该算法的有效性。

关键词: 盾构, 液压系统, 滑动窗算法, 主元分析, 故障诊断

CLC Number:

ZHOU Ai-Cai, HUANG Ke, DIAO Jiong, XIONG Xiao-Lei. Research on Fault Diagnosis of Hydraulic System for Shield Machine Based on Improved Moving Windows Algorithm of Principal Component Analysis[J]. China Mechanical Engineering, 2013, 24(5): 638-643.

周奇才, 黄克, 赵炯, 熊肖磊. 基于改进型滑动窗主元分析的盾构液压系统故障诊断研究[J]. 中国机械工程, 2013, 24(5): 638-643.

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Research on Fault Diagnosis of Hydraulic System for Shield Machine Based on Improved Moving Windows Algorithm of Principal Component Analysis

基于改进型滑动窗主元分析的盾构液压系统故障诊断研究

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