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This paper addresses the minimal cost sensor selection problem for event-detectability in Interpreted Petri Nets (IPN) models of Discrete Event Systems (DES). The computational complexity of this problem is reduced using an Ant Colony Optimization (ACO) algorithm. The proposed algorithm takes advantage of a structural characterization of the event-detectability property and can be tested in a polynomial...
In the context of video games design, Artificial Intelligence (AI) a broad of techniques have been used to generate the behavior of Non-Players Characters (NPC's). In this document, is explored the use of Supervisory control in Discrete Event Systems for design the behavior of NPC's, where the interaction between them it is not blocking. The modeling tool used is Interpreted Petri Nets (IPN) which...
This paper deals with supervisory control of discrete event systems (DES) by state feedback in order to avoid uncontrollable specifications and blockings. It incorporates two levels of modeling that includes the system and specification model and secondly the interpretation of the specification model in term of the system model based on trace equivalence. Next the controller process is computed. In...
In this paper we deal with the observability problem in discrete event systems modeled with interpreted Petri nets (IPN) under partial state observations with both silent and indistinguishable transitions. In particular, we study the sequence-detectability property which is a necessary condition for observability. We provide a characterization of sequence-detectability. This characterization takes...
This paper deals with supervisory control of discrete event systems (DES) modeled by interpreted Petri nets (IPN). In the approach herein proposed, both, the specification and the system model are described by IPN, however, the specification describes a state subset that the specification must reach. It also captures the order in which these states must be reached. Based on this framework, this paper...
This paper deals with a diagnosis based on interpreted Petri nets. It introduces the problem of energy interruption on electrical systems, which is a phenomenon of discrete nature where lost of the electrical energy and disconnections of several elements characterize it. Also, it presents a method for obtaining the diagnosis based on interpreted Petri nets and error interpreted Petri nets; the diagnosis...
In this paper we deal with the observability problem in discrete event systems modeled with interpreted Petri nets (IPN) under partial state observations. In particular, under the assumption of event-detectability and the knowledge of the number of system resources, we provide a methodology to compute the estimations reachability graph for a kind of IPN. Later, the estimations reachability graph is...
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