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This paper deals with integrated models joining maintenance and quality. We consider a manufacturing system composed of a single machine subject to an increased random failure rate and producing conforming and non-conforming items. In order to decrease the random failure rate and its impact on the quality of output products, a bloc type preventive maintenance strategy with minimal repair is considered...
This paper deals with integrated models joining maintenance and quality. We consider a manufacturing system composed of a single machine subject to an increased random failure rate and producing conforming and non-conforming items. In order to decrease the random failure rate and its impact on the quality of output products, a bloc type preventive maintenance strategy with minimal repair is considered...
This paper investigates integrated models joining Non Quality effect and preventive maintenance (PM) policy. We consider a single machine subject to random failure rate and producing progressive deteriorating products. A preventive maintenance (PM) strategy with minimal repair is applied with non negligible durations of maintenance tasks. This study consists in developing analytical models in order...
This paper presents a control synthesis approach for Discrete Event Systems (DES) modeled by Timed Place Marked Graphs TPMG where the time is associated with places. It solves a forbidden state problems characterized by Marking Exclusion Constraint (MEC). A computationally efficient technique to build the supervisor is proposed, which we take in consideration the uncontrollable and/or unobservable...
This paper addresses the design of a maximally permissive PN controller for the forbidden state problem of bounded Petri nets (PN) under partial observation. The controlled observer reachability graph of the controlled PN which represents the most permissive behavior with liveness requirement and uncontrollable/unobservable transitions is determined using the Ramadge-Wonham theory. A new class of...
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