Fault Diagnosis of Hydraulic Actuator Based on Least Squares Support Vector Machines

摘要：

According to the fault diagnosis method based on a mathematical model of the control system, a fault diagnosis method is proposed for hydraulic actuator based on least squares support vector machines (LS-SVM). This new fault diagnosis approach leads to solving a linear set of equations instead of solving a quadratic programming problem. The LS-SVM formulation also involves less tuning parameters. By using the measurable parameters, the fault diagnosis model of LS-SVM for hydraulic actuator are established. The simulation results show that this method can effectively detect every fault of servo valve, displacement sensor and servo amplifier.

关键词： Support vector machines Least squares support vector machines Hydraulic actuator Fault diagnosis

作者: Liangmou Hu Keqiang Cao Haojun Xu Baorui Li

作者单位: Department of Aircraft and Engine Engineering University of Air Force Engineering Xian, Shanxi Prov Equipment Headquarters College of Army Air Corps Beijing, China

会议类型: 国际会议

会议名称: 2007 IEEE International Conference on Automation and Lofistics

会议地点: 山东济南

会议语种:英文

在线出版日期: 2007-08-18（万方平台首次上网日期，不代表论文的发表时间）