Implementation of a decentralized supervisory controller for an assembly cell using a discrete-event systems approach

Thushara Ekanayake, Damith C. Herath, S. Devapriya Dewasurendra

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Abstract

In the context of supervisory control of discrete-event systems, decentralized control is a well-established area of research. In this paper we present an implementation of such controllers for an assembly cell with two-assembly stations (SCARA robots), in a laboratory scale Computer Integrated manufacturing (CIM) system. Step by step implementation, conflict avoidance between local supervisors and difficulties encountered are discussed. Petri nets are used as the modelling tool and Lin and Wonham [7] framework is used as the control architecture. Assembly stations are modelled as intelligent agents. A separate software module called Order Processing Module (OPM) is used to handle orders into and out of the system and to schedule the two-assembly stations.

Original languageEnglish
Title of host publication1st International Conference on Industrial and Information Systems, ICIIS 2006
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages485-490
Number of pages6
ISBN (Print)9781424403219
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event1st International Conference on Industrial and Information Systems, ICIIS 2006 - Peradeniya, Sri Lanka
Duration: 8 Aug 200611 Aug 2006

Conference

Conference1st International Conference on Industrial and Information Systems, ICIIS 2006
CountrySri Lanka
CityPeradeniya
Period8/08/0611/08/06

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    Ekanayake, T., Herath, D. C., & Dewasurendra, S. D. (2006). Implementation of a decentralized supervisory controller for an assembly cell using a discrete-event systems approach. In 1st International Conference on Industrial and Information Systems, ICIIS 2006 (pp. 485-490). [4216637] IEEE, Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/ICIIS.2006.365776