Fault Diagnosis for Electrohydraulic Servo Valve Based on Support Vector Machine

摘要：

　　Fault diagnosis for hydraulic components has featues of nonlinearity and high dimensional pattern identification,so its difficult to do it accurately with small sample using some common methods.Aimed at this problem,fault analysis for electro-hydraulic servo valve is carried on and the thought of symptom parameters reflecting the running status is illustrated.firstly.Then combining with function in the toolbox of MATLAB,the function to carry out multi-classification fault diagnosis based on Directed Acyclic Graph (DAG)Support Vector Machine (SVM) theory is built.At last,an example of fault diagnosis t is taken to test and verify the effectiveness of this method.

关键词： multi-classification fault diagnosis Support Vector Machine (SVM) Directed Acyclic Graph (DAG) electro-hydraulic servo valve

作者: Li Shiqiang Jiang Tongmin Li Xiaoyang

作者单位: school of reliability and system engineering, beihang university beijing, 100191 China

会议类型: 国际会议

会议名称: 2012 2nd International Conference on Computer Application and System Modeling(2012第二届计算机应用与系统建模国际会议)(ICCASM-2012)

会议地点: 沈阳

会议语种:英文

页码: 1385-1389

在线出版日期: 2012-07-27（万方平台首次上网日期，不代表论文的发表时间）