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Intelligent software agent technology has been widely used in manufacturing to make plants more agile and dynamic to satisfy frequently changed requirements from market. After illustrating agent applications in measurement and manufacturing, a multi-agent architecture for measurement system for advanced manufacturing with characteristics of distribution, collaboration and openness is presented, which...
The paper presents a modular control model to develop the control functions for manufacturing systems and its implementation using IEC 61499 function blocks. In particular, a new control module for automation objects is formally specified and its use on a hierarchical functional architecture has been discussed and the possible distribution of its IEC 61499 implementation is investigated. Finally,...
The increasing complexity of productive systems associated with the geographical dispersion of industries motivates new demands and the adoption of new design tools. In this context the purpose of this work is to introduce a new platform for distributed modeling and analyses of productive systems. The platform is based on Petri net as a modeling formalism and on the label-ring protocol for managing...
Global competition has given rise to logistic and production systems (LPSs), that are distributed manufacturing systems integrating international logistics and information technologies with production. This paper builds upon an LPS network design model previously proposed by some of the authors. The recalled technique formulates and solves a multi-criteria optimization problem to select the partners...
There are so many researches on Autonomous Distributed Manufacturing Systems (ADMSs), where cooperation among agents is used to solve problems, such as scheduling problem and routing problem. We target ADMSs where an ADMS consists of two sub-systems: a Production System (PS) and an Autonomous Transportation System (ATS). This paper discusses an on-line Tasks Assignment and Routing Problem (TARP) for...
This paper introduces an adaptive feedback control strategy for (max,+)-linear systems. The feedback loop is tuned following to an estimation of the system transfer and in order to match a given reference model. An application of such an adaptive control strategy is possible for some manufacturing systems in which the feedback control corresponds to an adaptive resource allocation
The paper presents an approach to obtain a closed-loop model of controlled manufacturing systems. The major obstacle in applying such models to formal verification of real systems is the effort that is needed to design a formal model of the plant behavior. We show in this contribution how a semi-formal description of the plant, called pneumatic equipment plan, can be used to reduce the effort to design...
A static control system architecture cannot meet the demand for continually introducing new parts into manufacturing systems while maintaining high quality and throughput for existing parts; a reconfigurable control infrastructure is needed. Control authority in the factory is typically allocated to three levels: the machine, cell, and system. The machine controllers must be reconfigurable to process...
Tumultuous and dynamic markets demand faster changes in their production systems. Frequent changes in order to implement new functionality is time consuming. Reconfigurability could offer a solution by using standard and open methods to represent information. Machines setup time could be decreased obtaining tested and dependable control modules from the device designer. In this way, control modules...
In high volume manufacturing (HVM), system control is shared between automation and human workers. The social organisation of workers plays an important role in supporting human decisions. Advances in the application of automation to a system, may change the social organisation associated with its operation. It establishes new work roles with broader information demands that require advanced decision...
This paper describes formal modeling and verification of automation systems from the system engineering point of view. Reuse of model components is the key issue in order to bring the scientific modeling methodology into engineering practice. The reuse is achieved by the combination of modular modeling of automation systems with object-oriented description of models in UML style. This allows to benefit...
Enterprise application integration (EAI) has been pursued strenuously by researchers and industrial practitioners for decades. With the advent of Web Services and Service-Oriented Architecture (SOA), realizing enterprise integration, even automating inter-enterprise interactions become feasible. Virtualization is the fundamental for implementing an SOA based on Web Service technologies. In this paper,...
The new reconfigurable manufacturing paradigm requires development of systematic methods, and software tools, for the rapid design and builds up of production systems that change the capacity and functionality in response to the market demand. The effectiveness of reconfiguration depends upon the development of such tools. In this work, the new concept consisting of ontology knowledge based systems...
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