Scheduling Real-time HiL Co-simulation of Cyber-Physical Systems on Multi-core Architectures
Abstract
When designing complex cyber-physical systems, engineers have to integrate numerical models from different modeling environments in order to simulate the whole system and estimate its global performances. Co-simulation refers to such joint simulation of heterogeneous models. If some parts of the system are physically available, it is possible to connect these parts to the co-simulation in a Hardware-in-the-Loop (HiL) approach. In this case, the simulation has to be performed in real-time where models execution consists in periodically reacting to the real (physically available) components and providing periodic output updates. This paper deals with the parallelization and scheduling of real-time Hardware-in-the-Loop co-simulation of numerical models on multi-core architectures. A method for defining real-time constraints that have to be met is proposed. Also, an ILP formulation as well as a heuristic are proposed to solve the problem of scheduling the co-simulation on a multi-core architecture while satisfying the previously defined real-time constraints. The proposed approach is evaluated for different sizes of co-simulations and multi-core processors.
Domains
Computer Science [cs] Embedded Systems Computer Science [cs] Distributed, Parallel, and Cluster Computing [cs.DC] Computer Science [cs] Modeling and Simulation Computer Science [cs] Operations Research [cs.RO] Computer Science [cs] Software Engineering [cs.SE] Computer Science [cs] Operating Systems [cs.OS] Computer Science [cs] Systems and Control [cs.SY]
Origin : Files produced by the author(s)
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