论文信息 - A STOPWATCH SEMANTICS FOR HYBRID CONTROLLERS

A STOPWATCH SEMANTICS FOR HYBRID CONTROLLERS

Programmable Logic Controllers (PLC) are frequently used in the automation industry for the control of hybrid systems. Although the programming languages for PLCs are given in the standard IEC 61131-3, their semantics are defined in an ambiguous and incomplete way. This holds in particular for the graphical language Sequential Function Charts (SFC), a high-level programming language comprising such interesting features as parallelism, activity manipulation, priorities and hierarchy. In this work we present a formal semantics for timed SFCs, which belong to the class of linear hybrid systems.

Ralf Huuck | Ben Lukoschus | Nanette Bauer

[1] Ralf Huuck,et al. An Abstract Model for Sequential Function Charts , 2000 .

[2] S. Lampérière-Couffin,et al. Formal Verification of the Sequential Part of PLC Programs , 2000 .

[3] Philippe Le Parc,et al. Proving Sequential Function Chart Programs Using Automata , 1998, Workshop on Implementing Automata.

[4] Ralf Huuck,et al. Towards automatic verification of embedded control software , 2001, Proceedings Second Asia-Pacific Conference on Quality Software.

[5] Stefan Kowalewski,et al. A Case study : Multi product batch plant for the demonstration of control and scheduling problems , 2000 .

[6] D. J. Holding,et al. The Formalisation and Analysis of Sequential Function Charts Using a Petri Net Approach , 1996 .

[7] Stuart Anderson,et al. Design for Proof: An Approach to the Design of Domain-Specific Languages , 1998, Formal Aspects of Computing.

[8] Kim G. Larsen,et al. The Impressive Power of Stopwatches , 2000, CONCUR.