Conference article

PNlib - An Advanced Petri Net Library for Hybrid Process Modeling

Sabrina Proß
University of Applied Sciences, Department of Engineering and Mathematics, Bielefeld, Germany

Bernhard Bachmann
University of Applied Sciences, Department of Engineering and Mathematics, Bielefeld, Germany

Download articlehttp://dx.doi.org/10.3384/ecp1207647

Published in: Proceedings of the 9th International MODELICA Conference; September 3-5; 2012; Munich; Germany

Linköping Electronic Conference Proceedings 26:4, p. 47-56

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Published: 2012-11-19

ISBN: 978-91-7519-826-2

ISSN: 1650-3686 (print), 1650-3740 (online)

Abstract

The scope of Modelica 3.3 has been extended from a language primarily intended for physical systems modeling to modeling of complete systems by allow the modeling of control systems and enabling automatic code generation for embedded systems. This paper describes the state machines introduced in Modelica 3.3. Any block without continuous-time equations or algorithms can be a state of a state machine. Transitions between such blocks are new kind of connections associated with transition conditions. The paper gives the details for building state machines and includes many examples. In addition; the complete semantics is described using only 13 Modelica equations.

Keywords

Petri nets; hybrid modeling; xHPN; process modeling

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