液压与气动Issue(9)：60-65,6.DOI:10.11832/j.issn.1000-4858.2017.09.012
基于VW-FDA的盾构机液压系统故障诊断方法研究
Fault Diagnosis Based on VW-FDA for Hydraulic System of Shield Machine
摘要
Abstract
A shield machine has a large scale size and a complex structure,and numerous variables to be inspected,so faults of hydraulic system offen occur during an engineering construction process.In order to realize the online-monitoring of numerous variables and to improve the fault diagnosis accuracy of the hydraulic system,a fast,accurate,and effective fault diagnosis of the shield machine has a great significance.Combined the weighted factor method with the traditional Fisher discriminant method,a variable-weighted-Fisher discriminant analysis (VW-FDA) method is proposed for the fault diagnosis of the hydraulic system of shield machine.A model based on the hydraulic propulsion system is established by the software AMESim,and four types of faults of the propulsion system are simulated.With the simulation result data of fault,the weighted vector of each type of fault is obtained,and the VW-FDA model is built.The research result shows that,for the hydraulic propulsion system of shield machine,the VW-FDA has a stronger diagnosibility than the traditional FDA,and it can classify the fault information effectively and make faults diagnosis more correct.关键词
盾构液压系统/变量加权/费歇尔判别法/AMESim仿真/故障诊断Key words
hydraulic system of shield machine/variable-weighted (VW)/Fisher discriminant analysis (FDA)/AMESim simulation/fault diagnosis分类
机械制造引用本文复制引用
郝用兴,周洋,郑淑娟,陈子义..基于VW-FDA的盾构机液压系统故障诊断方法研究[J].液压与气动,2017,(9):60-65,6.基金项目
国家高技术研究发展计划(863计划)(2012AA041802) （863计划）
国家留学基金委地方合作项目(201308410091) （201308410091）
河南省科技攻关重点项目(122102210166) （122102210166）
2015年度河南省基础与前沿技术研究项目(152300410215) （152300410215）
