Modeling and Formal Veriication of a Modular Level-crossing Controller Design

at 0/00 Modeling and formal veri cation of a modular level-crossing controller design H.-M. Hanisch Adresse: Otto von Guericke Universität Magdeburg, Institut für Automatisierungstechnik, PF 4120 D-39019 Magdeburg T. Pannier Adresse: Siemens AG Verkehrstechnik Ackerstraÿe 22 D-38126 Braunschweig D. Peter Adresse: Siemens AG Verkehrstechnik Ackerstraÿe 22 D-38126 Braunschweig S. Roch Adresse: Humboldt-Universität zu Berlin Institut für Informatik Unter den Linden 6, D-10099 Berlin P. Starke Adresse: Humboldt-Universität zu Berlin Institut für Informatik Unter den Linden 6, D-10099 Berlin Abstract: We present a modular modeling technique for Discrete Event Systems and its application to a modular and distributed controller design. The components of the controller were designed using Moore automata. The model of the interconnected system was set up using Signal-Event nets. Modelchecking was performed for veri cation of the design. Critical and dangerous states as well as dead transitions were found. The controller was redesigned, and it could be shown that the new design meets the speci cations.