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Redesign distributed PLC Control systems Using IEC 61499 Function Blocks

IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING 2012年第2期9卷 390-401页

作者： Dai, Wenbin Vyatkin, Valeriy Univ Auckland Dept Elect & Comp Engn Auckland 1142 New Zealand

The IEC 61499 Function Block architecture is considered as the next generation of programmable control technology promoting distributed control in automation. In this paper, the redesign methodologies from the PLC control to the event-driven architecture of IEC 61499 function blocks are proposed. A general set of translation steps and mapping rules for redesigning applications from IEC 61131-3 PLC to IEC 61499 Function Blocks is provided. Three different redesign approaches are proposed: object-oriented conversion approach, object-oriented reuse approach, and class-oriented approach. These approaches are to be applied for different design styles of the source PLC code. The data handling efficiency of all approaches is investigated. An airport baggage handling system is chosen as the case study for the redesign process. The rules and limitations are summarized and guidelines for the redesign process are provided. Note to Practitioners-This paper is motivated by the issue of insufficient PLC performance in an airport baggage handling system. When trying to deploy distributed control to PLC based baggage handling systems and provide intelligence to each PLC for sorting bags and malfunction detection, the efficiency and performance problems occur. Also, the PLC is not capable of reconfiguring the program during the operation. The performance of data update on a fieldbus deteriorates when more PLCs are connected to it. This paper suggests to use IEC 61499 standard and distributed control to solve those problems and proposes a way to migrate to IEC 61499 from IEC 61131-3 PLCs. By applying the proposed object-oriented and class-oriented design patterns for combining IEC 61499 with IEC 61131-3, the migration of centrally controlled baggage handling systems to distributed control systems is feasible. In this paper, we present a general translation methodology for both object-oriented and class-oriented approaches. Also, the data handling efficiency over the distributed contr

关键词： data handling in distributed system distributed control systems design IEC 61131-3 IEC 61499 programmable logical controllers (PLC)

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