Systems Theory and Automatic Control

Systems and Control Seminars for the winter semester 09/10

Fault Diagnosis of Discrete-Event Systems


Prof. Jan Lunze
Ruhr-Universität Bochum
Fakultät für Elektrotechnik und Informationstechnik
Lehrstuhl für Automatisierungstechnik und Prozessinformatik

Time and Place

The presentation will be given on Tuesday November 24, 2009, at 5 p.m. in building 09, room 211, Campus Universitätsplatz


The paper concerns the problem of fault diagnosis of discrete-event systems which are represented by automata. According to the principle of consistency-based diagnosis, methods for detecting and identifying faults in a dynamical system are based on the investigation whether the measured sequences of input and output symbols are consistent with the model of the faultless or the faulty system. As usually no a-priori information about the initial state of the system is available, the diagnostic algorithm has to solve a state observation problem, which will be described at the beginning of the presentation.The basic idea of this method is then used for diagnostic purposes and later generalised to nondeterministic, stochastic and timed automata. Applications to industrial processes illustrate the effectiveness of the method.

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Information about the Speaker

Jan Lunze obtained the diploma in Technical Cybernetics, the PhD, and the DrSc. degrees (Habilitation) all from the Technical University Ilmenau (Germany). Between 1992 and 2001 he was Professor of Control Engineering at the Technical University Hamburg-Harburg. Now he is Professor of Automatic Control and head of the Institute of Automation and Computer Control at the Ruhr-University Bochum where he teaches system and control theory.

Professor Lunze's research interests are in control theory, particularly in the field of networked control systems, where he coordinates the Priority Programme on Control Theory of Digitally Networked Systems, in hybrid dynamical systems, in discrete-event systems and in applications of knowledge processing to dynamical systems. He is author and co-author of numerous research papers and has written several books including "Regelungstechnik" (Springer, several editions since 1996), "Ereignisdiskrete Systeme" (Oldenbourg 2006) and co-authored "Diagnosis and Fault-Tolerant Control" (Springer 2003, 2006).

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