Contigenous Systems

The Contigenous Systems

(abbreviated CHS) is the name of a new paradigm introduced by us, in 2016. This paradigm refers to subclass of Cyber-Physical Systems (CPS) and it approach focuses on aspects like contingency and heterogeneity.

The contigenous systems are CPS characterized by:

  • regime change: the overall system behavior involves the existence of different operating modes and a switching between them
  • hybrid dynamics: strong interaction between discrete and continuous dynamics
  • embedded behavior: the system functions in a dynamic physical environment
  • contingency: the system behavior can be perturbed by the environment or by internal events
  • heterogeneity: the whole system is composed from heterogeneous subsystems
  • complexity: this refers to complexity science and not to the large scale approach from engineering or the computational complexity from computer science

The CHS technology


  • Modelling based on stochastic hybrid systems and extensions
  • Analysis based on stochastic reachability analysis
  • Case studies: air traffic management


Relevant publications

  1. Manuela Bujorianu, Marius Bujorianu “Interdisciplinary Modeling of Autonomous Systems Deployed in Uncertain Dynamic Environments” Springer Verlag, Lecture Notes In Electrical Engineering, vol. 85(4), 2010:337-
  2. Manuela Bujorianu, Marius Bujorianu State Constrained Reachability Analysis of Stochastic Hybrid Systems Elsevier-IFAC Analysis and Design of Hybrid Systems Vol. 3(1), 2008:168-173.
  3. Marius Bujorianu, Manuela L.Bujorianu, Howad Barringer, “A Formal framework for user centric control of probabilistic multi-agent cyber-physical systems”, Springer Verlag, Lecture Notes in Artificial Intelligence Vol. 5405, 2008:97-116.
  4. M. Bujorianu, J. Lygeros, Marius. Bujorianu: Bisimulation of general stochastic hybrid systems,Springer Verlag, Lecture Notes In Computer Science Vol. 3414, 2004:198-216

©Marius Bujorianu, August 2017