Turning clockwise: using UML in the real-time domain
Communications of the ACM
Modelling Distributed Control Systems Using IEC 61499
Modelling Distributed Control Systems Using IEC 61499
A Holonic Approach to Reconfiguring Real-Time Distributed Control Systems
Proceedings of the 9th ECCAI-ACAI/EASSS 2001, AEMAS 2001, HoloMAS 2001 on Multi-Agent-Systems and Applications II-Selected Revised Papers
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The IEC model for distributed control systems (DCSs) was adopted for the implementation of a new generation engineering tool. However, it was found that this approach does not exploit all the benefits of the object and component technologies. In this paper, we present the enhanced 4-layer architecture that proved to be very helpful in the identification of the key abstractions required for the design of the new generation of function block based engineering tools. Despite being IEC-compliant, the proposed approach introduces a number of extensions and modifications to the IEC-model to improve the development process. The Unified Modelling Language is exploited during the requirements phase of DCSs, but the use of the FB construct is confected during the design phase.