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From physical modelling to compositional models of hybrid systems

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Formal Techniques in Real-Time and Fault-Tolerant Systems (FTRTFT 1994, ProCoS 1994)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 863))

Abstract

By a hybrid system we mean a discrete controller in interaction with a physical environment. This paper discusses methodologies for incorporating physically grounded models in representations of hybrid systems. To this end, we study a driver support system, an example which includes unmodelled inputs. We consider models at different levels of abstraction. First, we show that discrete models of the environment can be obtained from the continuous models without losing relevant information. We do this using an analysis of the continuous state space. Dynamic Transition Systems (DTS) are used for the modular modelling at this level of abstraction. Next, we consider models using Hybrid Transition Systems (HTS). This can be seen as a modular version of timed transition systems allowing both differential and algebraic equations in each mode. Finally, we comment on expressivity requirements on hybrid formalisms for modelling realistic physical systems.

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Author information

Authors and Affiliations

  1. Dept. of Computer and Information Science, Linköping University, Sweden

    Simin Nadjm-Tehrani

  2. Div. of Automatic Control, Dept. of Electrical Engineering, Linköping University, S-581 83, Linköping, Sweden

    Jan-Erik Strömberg

Authors
  1. Simin Nadjm-Tehrani
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  2. Jan-Erik Strömberg
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Hans Langmaack Willem-Paul de Roever Jan Vytopil

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© 1994 Springer-Verlag Berlin Heidelberg

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Nadjm-Tehrani, S., Strömberg, JE. (1994). From physical modelling to compositional models of hybrid systems. In: Langmaack, H., de Roever, WP., Vytopil, J. (eds) Formal Techniques in Real-Time and Fault-Tolerant Systems. FTRTFT ProCoS 1994 1994. Lecture Notes in Computer Science, vol 863. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-58468-4_185

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  • DOI: https://doi.org/10.1007/3-540-58468-4_185

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  • Print ISBN: 978-3-540-58468-1

  • Online ISBN: 978-3-540-48984-9

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