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Marco Münchhof

Fault Diagnosis for Hydraulic Servo Axes

Keywords: fault diagnosis, condition monitoring, hydraulic servo axis, parameter estimation, parity equation

This paper presents a model-based fault diagnosis system for linear hydraulic servo axes. Parity equations and parameter estimation methods are employed for fault detection, which are based on a precise physical model of the hydraulic plant. A fuzzy logic based diagnosis system allows the diagnosis of ten process faults at the control valve and the cylinder as well as sensor faults in all employed sensors.

at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag

Print ISSN: 0178-2312
Volume: 55, 02/2007
Pages: 96 - 103

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