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Collaborative Development of Dependable Cyber-Physical Systems by Co-Modeling and Co-Simulation
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Author(s): John Fitzgerald (Newcastle University, UK), Ken Pierce (Newcastle University, UK)and Peter Gorm Larsen (Aarhus University, Denmark)
Copyright: 2014
Pages: 28
Source title:
Handbook of Research on Embedded Systems Design
Source Author(s)/Editor(s): Alessandra Bagnato (Softeam R&D, France), Leandro Soares Indrusiak (University of York, UK), Imran Rafiq Quadri (Softeam R&D, France)and Matteo Rossi (Politecnico di Milano, Italy)
DOI: 10.4018/978-1-4666-6194-3.ch001
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Abstract
The pace of innovation in Cyber-Physical Systems (CPSs) drives the need for multi-disciplinary methods and tools to support rapid and accurate assessment of design alternatives. In this chapter, the authors describe collaborative models (co-models) that link Discrete-Event (DE) models of control software with Continuous-Time (CT) models of controlled plant. They present methods and tools for co-modeling using VDM as the DE formalism, and bond graphs on the CT side, using the Crescendo platform to link existing simulators (Overture for VDM and 20-sim for bond graphs). The authors discuss the exploitation of co-models within the design flow, including their use with SysML, and the roles of Software-in the-Loop and Hardware-in-the-Loop simulation on the way to realising co-models in cyber and physical media. The authors identify research challenges in providing sufficient model fidelity and the evidence needed to support the engineering of certifiably dependable systems.
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