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Items for "fault diagnosis"

A Systematic Designing Approach for Signal-based Fault Diagnosis System, Part 1

This paper deals with the design methodology of fault diagnosis systems based on signal analysis. Fault diagnosis systems generaly have to be engineered individualy, therefore it is of interest to develop tools and schematic design process as aimed in this paper, which reduce the engineering expense...

Keywords: Fault detection, fault diagnosis, feature extraction, feature selection, classification

01/2006 | at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag

A Systematic Designing Approach for Signal-based Fault Diagnosis System, Part 2

Part 1 of this article dealt with the design methodology of fault diagnosis systems based on signal analysis...

Keywords: Fault detection, fault diagnosis, feature extraction, feature selection, process valve

02/2006 | at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag

Diagnosis of Discretely Controlled Continuous Systems

The papers presents five diagnostic methods for discretely controlled continuous systems, which differ with respect to the model and measurement information used...

Keywords: hybrid systems, fault diagnosis, model abstraction, completeness, embedded map

08/2006 | at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag

Sampling of Narrow Band Signals and its Application for Envelope Analysis in Computer-aided Diagnosis Systems

This paper presents a modified procedure for the application of the envelope analysis for fault detection and diagnosis in rolling bearings...

Keywords: sampling, narrow band signal, sampling theorem, envelope analysis, fault diagnosis

02/2007 | tm – Technisches Messen, Oldenbourg Wissenschaftsverlag

Fault Diagnosis for Hydraulic Servo Axes

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...

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

02/2007 | at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag

Model-based Identification of Malnutrition via Bioimpedance Spectroscopy

Protein-energy-malnutrition reduces the quality of life, lengthens the time in hospital and increases the mortality dramatically...

Keywords: malnourishment, bioimpedance spectroscopy, fault diagnosis

10/2007 | at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag

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