Fault Detection for Electro-Hydraulic Valve-Controlled Single Rod Cylinder Servo System Using Linear Robust Observer

摘要：

This paper presents a method of linear robust observer design for electro-hydraulic valvecontrolled single rod cylinder servo system fault detection. Firstly, the paper outlines the difficulties associated with modeling nonlinear observer and the dynamic equations of the system. Secondly, the linear modeling process is recapped by highlighting the likely uncertainties which influence the implementation of model-based approaches. Thirdly, the linear robust observer is designed in the presence of unknown inputs, such as adscititious force disturbance, linearization error, parameters fluctuation, process noise, measurement noise. Finally, experiments show that this observer has the ability to reject disturbance and reliably respond to the fault due to oil leakage.

关键词： fault detection electro-hydraulic valve-controlled single rod cylinde servo systemr linear robust observer design

作者: MING Ting-tao ZHANG Yong-xiang ZHANG Xi-yong

作者单位: College of Naval Architecture and Power Naval University of Engineering Wuhan,China

会议类型: 国际会议

会议名称: 2009 International Conference on Measuring Technology and Mechatronics Automation(ICMTMA 2009)(2009年检测技术与机械自动化国际会议)

会议地点: 长沙

会议语种:英文

页码: 639-642

在线出版日期: 2009-04-11（万方平台首次上网日期，不代表论文的发表时间）