Failure analysis and fault simulation of an electrohydraulic servo valve

被引：0

作者：

Shi, ZQ ^{[1
]}

Gu, FS

Ball, A

Hong, Y

机构：

[1] Univ Manchester, Maitenance Engn Res Grp, Manchester M13 9PL, Lancs, England

[2] Hebei Univ Technol, Sch Mech Engn, Tianjin 300130, Peoples R China

来源：

CONDITION MONITORING AND DIAGNOSTIC ENGINEERING MANAGEMENT | 2001年

关键词：

Failure mode; fault diagnosis; fault simulation; fluid power; electro -hydraulic servo valve; symptom;

D O I：

10.1016/B978-008044036-1/50104-9

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper presents the failure analysis and fault simulation of the electro-hydraulic servo (EHS) valve. The aim is to provide solutions to some difficulties that exist on the fault diagnosis of the EHS valve such as failure modes and fault symptoms. The failure analysis will give the fault modes of the valve by means of failure investigation. The fault symptoms are obtained by means of fault simulation. According to the principle of the valve, a mathematical model has been derived in this paper. After combining the math-model with the failure modes, the fault model is developed for use with the EHS valve. A new approach, digital fault simulation (DFS), is then developed to implement the simulation. In this approach, some faults can be investigated, including faults in operating principle failure and faults that can not be implemented in the test rig. As results, many useful symptoms can be obtained from the simulation. This will provide signature basis for the maintenance and fault diagnosis of EHS valve.

引用

页码：881 / 887

页数：7