Many diagnosis approaches for discrete event systems are diagnoser-based. A diagnoser is a deterministic automaton that can be built directly from the underlying system model by performing e-reduction and determinization operations. The diagnoser-based approaches allow for analyzing diagnosability, but they also support online diagnosis in a straig...
In this article, a diagnosis approach for partially observed labelled Petri nets is developed based on building a set of analytical redundancy relationships on a progressive horizon. A nominal model is used for fault detection based on a set of relationships linking the known data of the nominal behaviour. A fault model is used for fault isolation ...
Published in Cahiers Agricultures
En Tunisie, la culture de blé dur en irrigué est pratiquée sur une superficie moyenne annuelle de 48 700 ha, soit environ les deux tiers des superficies céréalières conduites en irrigué. Elle produit en moyenne 180 000 t, soit 20 % de la production nationale de blé dur. Cependant, les rendements réalisés restent toujours en dessous des attentes ave...
Published in Health technology assessment (Winchester, England)
Sore throat is a common condition caused by an infection of the airway. Most cases are viral; however, a small number may be caused by the group A Streptococcus bacterium. Most viral and bacterial sore throat infections resolve spontaneously within a few weeks; however, some may be more serious and require antibiotics. Currently, National Institute...
The aim of this work is to propose a new development of the fuel cell characterization tool based on Voltage Singularity Spectrum (VSS), a pattern that can advantageously be estimated from the "free" evolution of the stack voltage. A Polymer Electrolyte Membrane Fuel Cell (PEMFC) designed to operate in micro Combined Heat and Power units is investi...
La commission Corrosion des Aciers dans les Bétons du CEFRACOR travaille sur la rédaction d'un guide méthodologique dédié au diagnostic de corrosion des constructions en béton armé.
The rotary kiln is widely used for the thermal treatment of granular materials in various industries. A better understanding of the heat transfer phenomena, both inside and outside of the industrial rotary kiln, will lead to developing sustainable production techniques, such as materials recycling and heat waste recovery. The present paper summaris...
Real life experience has shown that intermittent faults are among the most challenging kinds of faults to detect and isolate, being present in the majority of production systems. Such a concern has made intermittent fault an active area of research in both discrete event and continuous-variable dynamic systems. In this paper, we present a review of...
Real life experience has shown that intermittent faults are among the most challenging kinds of faults to detect and isolate, being present in the majority of production systems. Such a concern has made intermittent fault an active area of research in both discrete event and continuous-variable dynamic systems. In this paper, we present a review of...
The aim of this work is to propose a new development of the fuel cell characterization tool based on Voltage Singularity Spectrum (VSS), a pattern that can advantageously be estimated from the "free" evolution of the stack voltage. A Polymer Electrolyte Membrane Fuel Cell (PEMFC) designed to operate in micro Combined Heat and Power units is investi...
