NDLI: Methodology for modeling visual flowchart control programs using net condition/event systems formalism in distributed environments

Content Provider	IEEE Xplore Digital Library
Author	Lobov, A. Lastra, J.L.M. Tuokko, R. Vyatkin, V.
Copyright Year	2003
Description	Author affiliation: Inst. of Production Eng., Tampere Univ. of Technol., Finland (Lobov, A.; Lastra, J.L.M.; Tuokko, R.)
Abstract	This paper addresses formal validation of distributed logic controllers represented in Visual Flowchart Language (VFL) that is a high-level programming language used in industrial automation. Traditional validation approaches based on simulation become obsolete in reconfigurable manufacturing systems where complex machines have decentralized control and are built by reuse of components. The source code based validation is also important for OEMs to unify their development procedures from embedded systems to machine controllers. For modeling the VFL design we used net condition/event systems (NCES) - a modular formalism developed for modeling systems with distributed states such as closed-loop control systems in distributed mechatronic devices. The methodology was implemented in software tools automatically generating the model's modules given the controller's source code. Then the hierarchical NCES model is assembled into a place/transition net that is subjected to model checking. The proposed approach facilitates integration of formal validation into software/hardware development in control systems' engineering.
Sponsorship	IEEE Ind. Electron. Soc. UNINOVA & Univ. Nova de Lisboa-FCT- DEE
Starting Page	329
Ending Page	336
File Size	459590
Page Count	8
File Format	PDF
ISBN	0780379373
DOI	10.1109/ETFA.2003.1248718
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-09-16
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Flowcharts Automatic control Distributed control Control systems Reconfigurable logic Logic programming Computer languages Electrical equipment industry Industrial control Manufacturing industries
Content Type	Text
Resource Type	Article

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