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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2008.tde-09022009-174607
Document
Author
Full name
Robson Marinho da Silva
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2008
Supervisor
Committee
Miyagi, Paulo Eigi (President)
Arakaki, Julio
Silva, José Reinaldo
Title in Portuguese
Modelagem de sistemas de controle de edifícios inteligentes considerando a ocorrência de falhas.
Keywords in Portuguese
Edifícios inteligentes
Falhas computacionais
Redes de Petri
Sistemas de controle
Abstract in Portuguese
Sistemas de controle de edifícios inteligentes têm evoluído consideravelmente e a sua confiabilidade também tem melhorado. Mesmo assim, falhas são inevitáveis em sistemas concebidos, construídos e operados pelo homem e uma abordagem alternativa envolve a minimização das conseqüências das falhas. Isto é possível através da reconfiguração do sistema que se faz realocando funções de controle e escolhendo outras formas de interação entre os processos. Apesar disso, na literatura ainda não existe muito material que trate da modelagem de processos em que desde a sua concepção as falhas são consideradas. Assim, propõe-se neste trabalho o desenvolvimento de um procedimento para a modelagem de sistemas de controle considerando além das especificações funcionais, em situação normal, a ocorrência de falhas. Em função da base teórica existente e ferramentas disponíveis a abordagem proposta adota o conceito de sistemas a eventos discretos, holon e a técnica de rede de Petri e suas extensões para descrever a estrutura e o funcionamento deste sistema de controle. Um exemplo de aplicação é aqui apresentado para ilustrar as principais características deste procedimento.
Title in English
Control systems modeling of intelligent buildings considering the faults occurrence.
Keywords in English
Control system
Discrete event system
Fault tolerance
Holon
Intelligent building
Petri net
Reconfiguration
Abstract in English
Control systems of intelligent buildings have evolved and its reliability has evidently improved. However, faults are inevitable in systems conceived, constructed and operated by humans and an alternative approach is the minimization of the faults consequences. This is possible through the reconfiguration of the system, i.e., re-allocating control functions and choosing other forms of interaction between the processes. Despite this, there are few publications that deal with the modeling of processes where since its conception the faults are considered. Thus, this work proposes the development of a procedure for the modeling of control systems considering beyond the functional specifications in normal situation, the occurrence of faults. Based on the existing theoretical base and available tools the proposal adopts the concept of discrete event system, holon and Petri net technique with its extensions to describe the structure and the operation of these control systems. An application example is here presented to illustrate the principal characteristics of this proceeding.
 
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Publishing Date
2009-02-20
 
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