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This paper proposes a design of sophisticated multi-Objective H2/H∞ collective pitch controllers using linear Matrix Inequalities' techniques. The proposed controller's design takes into account model uncertainties by designing a controller based on a polytopic model. The LMI-based approach allows additional constraints to be included in the design (e.g. H∞ problem, H2 problem, H∞/H2 trade-off criteria,...
The common definition of modal participation factors was intended to provide a measure of participation of modes in states and of states in modes for linear time-invariant (LTI) systems. In this paper, recent work by the authors that revisited this common definition is extended to yield definitions and calculations for quantifying the relative contribution of system modes in system outputs. When the...
Ontology is one of the essential topics in the scope of an important area of current computer science and Semantic Web. Ontologies present well defined, straightforward and standardized form of the repositories (vast and reliable knowledge) where it can be interoperable and machine understandable. There are many possible utilization of ontologies from automatic annotation of web resources to domain...
Ontology is one of the essential topics in the scope of an important area of current computer science and semantic Web. Ontologies present well defined, straightforward and standardized form of the repositories (vast and reliable knowledge) where it can be interoperable and machine understandable. There are many possible utilization of ontologies from automatic annotation of Web resources to domain...
According to the exponential growth of services available on large distributed networks, transport customers require relevant, interactive and instantaneous information during their travels. Thus, we designed and implemented a multi-agent information system (MIS) using the mobile agents. However, some network errors can occur during the moving of mobile. So, we define a negotiation ontology protocol...
In this paper, we address the problem of negotiation process in a multi-agents system by using ontologies. Therefore, we present an ontology solution based on the knowledge management system for semantic heterogeneity. The proposed solution prevents the misunderstanding during the negotiation process though the agents' communications. Our approach aims to facilitate, to automate the communications...
In this paper, we address the problem of negotiation process in a multi-agents system by using ontologies. Therefore, we present an ontology solution based on the knowledge management system for semantic heterogeneity. The proposed solution prevents the misunderstanding during the negotiation process though the agents' communications. Our approach aims to make the agents able to understand each other...
After computational grids have lain the foundations for the functionalities and acceptance of grid infrastructures, service grids may now set a new paradigm in their development and construction. We present an organizational model using different roles for each service layer, and discuss the possibility to integrate customer-oriented service chains, located in exclusively delegated virtual service...
Current applications are distributed in nature and manipulate time-critical databases with firm-deadline transactions. A transaction submitted to a master site is splitted into sub transactions executed on participant sites which manage each a local database. In this paper, we propose a Java platform based on a protocol that manages real-time distributed transactions with firm-deadline, in the context...
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