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Diagnosability of Flexible Robotic Manipulators for Railways SystemsCalin CIUFUDEAN, Alexandru Bogdan LARIONESCU, Daniel POPESCU
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Controlled Petri nets, discrete event systems, railway system
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About this article
Date of Publication: 2005-04-02
Volume 5, Issue 1, Year 2005, On page(s): 33 - 40
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: Not assigned
Fault detection is a crucial and challenging task in the automatic control of complex system, e.g. in flexible manufacturing systems, and robotic systems as representative classes of discrete event systems. In this paper, we consider the discrete event systems (DES) modeled via a state - space representation. The control objective is the avoidance of a given set of states. We achieve this goal by verifying that certain predicates, specified in terms of states, are always false. We model the DES involved in physical systems with a class of controlled state machines, respectively the formalism of the controlled Petri nets. A model of a railway system illustrates the theoretical approach. Possible extensions of the work are also discussed.
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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