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This paper deals with a system maintenance optimization problem. The system to be maintained is assumed to be continuously monitored and subject to stochastic degradation. The proposed maintenance model considers three types of maintenance actions: minimal repair, preventive maintenance(PM)and replacement. PM are performed at dates kT (k = 1,2,…) while minimal repair are executed at failure occurrence...
This paper considers a manufacturing system composed of a single randomly failing machine. Initially, the system is the supplier of a direct client, in a supplier - client relation. In order to maximise its profits, the system provides an outsourcing task to several firms, in a subcontractor - multi-outsourcers relation. The research described here aims to study the outsourcing constraints from the...
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...
Several periodic preventive maintenance (PM) models have been developed in the literature. This paper introduces an adaptive failure law which can vary over time depending on the missions to achieve. From this degradation law, the purpose of this paper is to develop a preventive maintenance policy for finite horizon of time, noted H, based on a set of improvement maintenance actions at fixed interval...
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