AMR.383-390.2318[1] - Advanced Materials Research Vols 383-390(2012 pp 2318-2326 ©(2012 Trans Tech Publications Switzerland

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A procedure for modeling of Holonic Control Systems for Intelligent Building (HCS-IB) Robson M. da Silva 1,a , Julio Arakaki 2,b , Fabricio Junqueira 3,c , Diolino J. Santos Filho 3,d , Paulo E. Miyagi 3,e 1 Universidade Estadual de Santa Cruz, Ilhéus, BA, Brazil 2 Pontifícia Universidade Católica de São Paulo, São Paulo, SP, Brazil 3 Escola Politécnica da Universidade de São Paulo, São Paulo, SP, Brazil a [email protected], b [email protected], c [email protected], d [email protected], e [email protected] Keywords: ntelligent building, building control system, fault tolerance, holonic system, Petri net, system reconfiguration. Abstract. Faults occurrence is inevitable in real world and a practical alternative approach is the reduction of fault consequences. Despite of this, the majority of buildings control systems do not have such mechanisms. Thus, this work proposes a procedure for the modeling of control systems for intelligent buildings which considers their functional specifications in normal operation, and in case of faults occurrence. The procedure adopts the concepts of discrete event system, holon, and Petri net and its extensions. It is presented some models derived from case studies, and mechanisms to fault-diagnosis, decision and reconfiguration. Introduction Intelligent building (IB) became an important infrastructure of modern productive plants dedicated to manufacturing products and executing services. In a typical IB environment there are systems such as HVAC (heating, ventilation and air conditioner) system, digital surveillance system, and access control and fire management system. In this work these systems are called as subsystems of the IB and in practical case there are heterogeneous. Despite this the designer of the IB should guarantee the interoperability among these subsystems. The concept of integrated systems is also fundamental to effectively combine the use of available resources in buildings control subsystems (BCS) [1, 2]. Moreover, a totally infallible system is unfeasible from practical viewpoint, once operational errors and faults occurrence is inevitable in systems conceived, constructed and operated by human [3]. Thus, the IB control subsystem must be provided with mechanisms of active fault-tolerant control (AFTC) that take account the system reconfiguration [4]. This reconfiguration is done by reallocation of resources and by choosing alternative ways of interactions among the processes [5]. These aspects define a complex behavior that confirms the necessity of a control architecture that integrates different functions for execution of a set of activities and of shared use of resources. An agent is considered a software entity with enough intelligence that is capable of autonomous control actions and cooperation relationships by participating in associations’ agreements with other entities in order to meet its design objectives [6]. A multi-agent system (MAS), a system composed by two or more agents, can execute distributed intelligent supervisory control function with
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This note was uploaded on 12/11/2011 for the course DCET eng taught by Professor Rms during the Spring '11 term at University of South Pacific.

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AMR.383-390.2318[1] - Advanced Materials Research Vols 383-390(2012 pp 2318-2326 ©(2012 Trans Tech Publications Switzerland

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