Modelagem e simulação distribuída de sistema produtivo baseados em rede de Petri

Abstract

Em função da capacidade computacional instalada e da estrutura dispersa de alguns sistemas produtivos, existe interesse em soluções de modelagem e simulação distribuída destes sistemas. Isso é considerado como um recurso fundamental para o projeto, implementação e melhoria de desempenho desses sistemas produtivos. A idéia é que por meio de simulações com o uso de computadores fisicamente dispersos, mas integrados através de uma rede de comunicação, pode-se avaliar o comportamento de sistemas em concepção e melhorar resultados de plantas existentes. Este trabalho propõe assim, um procedimento para a modelagem de sistemas produtivos em ambientes distribuídos. Esse procedimento foi aplicado com sucesso a alguns estudos de caso onde sua eficácia foi confirmada. Este trabalho envolve ainda a proposta de um algoritmo para o gerenciamento da simulação distribuída. Com o método de modelagem e o algoritmo de gerenciamento tem-se os principais elementos para a implementação prática de um simulador de sistemas produtivos dispersos.<br>Based on the existing computational capability and disperse infrastructure of some productive systems, there are interest for distributed modeling and simulation of these systems. These techniques are considered fundamental for design, implementation and performance improvement of productive systems. The approach is the simulation through the use of computers physically dispersed but integrated via a communication network to evaluate the behavior of systems still in conception level and also to improve the performance of existing plants. This work proposes a procedure for modeling of productive systems in distributed environment. This procedure was applied to case studies to confirm it effectiveness. The work includes an algorithm for the management of the distributed simulation. With the modeling method and the management algorithm we have the main elements for the practical implementation of the disperse productive system simulator

Framework to evaluate the performance and sustainability of a disperse productive system

“…As defined in Cambridge dictionary online [3], a framework is a support structure around which a ''thing'' can be built. Adapting it to the present work, a framework can be Example of a productive process modeling in PFS: a transporter circular movement, going through the stations; b PFS model of the transport system Adapted from Junqueira and Miyagi [21] their tools must be adopted to ensure the correct application of the requirements involved [9]. Figure 7 illustrates the main functionalities that should be considered to evaluate the sustainability performance of a DPS.…”

Wi-Bio: management policy aimed at the establishment of networks for patient monitoring using IEEE 802.11

“…Moreover, such networks are widely used for the description of protocols and communication systems (Cassandras and Lafortune, 2008;Godoy et al, 2010;Junqueira and Miyagi, 2009). The tool used when projecting the Petri nets of Wi-Bio was PIPE2 3.0 (Dingle et al, 2009).…”

Modeling of Collaborative Production Systems Using Coloured Petri Nets

“…Step 6: The CPS is integrated into a single model that can be simulated. The simulation of the computational model allows the designer to refine or to create new strategies or specifications of the system, detecting errors and mistakes before the CPS implementation (Junqueira and Miyagi, 2009).…”

“…Thus, the logic control of the system is classified according to the semantics and functionality. In Junqueira and Miyagi (2009), a framework for distributed simulation was defined which the Petri net is used as a tool to model large and geographically dispersed PS. In Garcia et al (2009), a characterization of a framework was presented for integration and coordination of services provided by components of a geographically dispersed PS.…”