Hybrid Systems

Lecture · Bachelor / Master

Summer Term 2024
Teachers: Erika Ábrahám, Lina Gerlach, József Kovács
Show all terms (12 more)
Summer Term 2021
Teachers: Erika Ábrahám, Rebecca Haehn, Jasper Nalbach
Summer Term 2020
Teachers: Erika Ábrahám, Stefan Schupp
Summer Term 2019
Teachers: Erika Ábrahám, Stefan Schupp
Summer Term 2018
Teachers: Erika Ábrahám, Stefan Schupp
Summer Term 2017
Teachers: Erika Ábrahám, Stefan Schupp
Summer Term 2016
Teachers: Erika Ábrahám, Stefan Schupp
Summer Term 2015
Teachers: Erika Ábrahám, Stefan Schupp
Summer Term 2013
Teachers: Erika Ábrahám, Xin Chen
Summer Term 2012
Teachers: Erika Ábrahám, Xin Chen
Summer Term 2011
Teachers: Erika Ábrahám
Summer Term 2010
Teachers: Erika Ábrahám
Summer Term 2009
Teachers: Erika Ábrahám
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Please note

What are hybrid systems?

Hybrid systems are systems with mixed discrete and continuous behavior. Typical examples are physical systems which continuously evolve over time and are controlled by some discrete controller, e.g., a chip or a computer.

Why modelling and analysis?

The behavior of hybrid systems is often safety -critical. For example, in case of an accident an airbag can save the life of the car driver, but only if the airbag reacts in time. To assure the correct functioning of such safety-critical hybrid systems, their automatic synthesis and analysis is of high importance.

Lecture content

In this lecture, we learn how to model hybrid systems and how to analyze the behavior of the models using formal methods. More precisely, we will learn methods to solve the reachability problem , i.e. the problem to decide whether any state from a given target set is reachable in a model.

We start with introducing hybrid automata as a modeling language for hybrid systems, define several sub-classes of hybrid automata with increasing expressive power, and for each sub-class we discuss whether the reachability problem is decidable, and develop algorithms for their analysis. Besides exact methods, we consider also over-approximative computations. Finally, we discuss extensions of hybrid automata models and their analysis methods to cover also random (probabilistic) aspects of hybrid systems.

Course organisation

Evaluation from previous years

SS 10: lecturer and lecture (ss10)
SS 11: lecturer (ss11)lecture (ss11)
SS 12: lecturer (ss12)lecture (ss12)
SS 13: lecturer (ss13)lecture (ss13)
SS 14: no lecture (sabbatical)
SS 15: lecturer+lecture (ss15)
SS 16: lecturer+lecture (ss16)
SS 17: lecturer+lecture (ss17)
SS 18: lecturer+lecture (ss18)
SS 19: lecturer+lecture (ss19)
SS 20: lecturer+lecture+exercise (ss20)
SS 21: lecturer+lecture+exercise (ss21)