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This paper addresses several questions related to the control of timed continuous Petri nets under infinite server semantics. First, some results regarding equilibrium states and control actions are given. In particular, it is shown that the considered systems are piecewise linear, and for every linear subsystem the possible steady states are characterized. Second, optimal steady-state control is...
This paper is concerned with fault detection and location of discrete event systems (DES) modeled using interpreted Petri nets (IPN). In a DES model places and transitions may be epsiv-labeled for representing internal DES behavior. An efficient method for obtaining a diagnoser IPN model is proposed: based on the DES model, an Petri net is synthesized; this net consists of a single place and the same...
This paper addresses fault recovery of discrete manufacturing systems through the reconfiguration of the controller. It is assumed that the system is controlled using a Petri net regulation controller scheme. Based on this scheme, this paper presents a novel control reconfiguration technique for fault recovery. The main contribution of this paper is an incidence matrix based technique and an abelian...
This paper deals with the observability problem in discrete event systems (DES) modeled by interpreted Petri nets (IPN). The observability problem in DES is related with the possibility of mathematically inferring the DES states which could not be directly measured. The observability notion presented is defined having two main properties: a) the possibility of reconstructing the initial and current...
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