THE EST MODELLING AND SIMULATION TECHNOLOGY

AT A GLANCE

  • Rapid and systematic derivation, investigation and optimization of distributed system and system-of-systems models
  • Highest performing, scalable, multi-core simulation engine in the world
  • Enabled the empirical research that first demonstrated that V2V DSRC communication, in its current form, is insufficient to guarantee the safety of vehicles in traffic.

INTEGRATED MODEL-BASED DESIGN, DEVELOPMENT AND VERIFICATION
Integral to the design of the ESSE System Workbench for modelling and simulation of networked, real-time systems and systems-of-systems was that it be able to incorporate:

  • ANY MODEL - discrete or continuous and of various fidelities
  • ANY SIMULATOR - discrete or continuous
  • ANY TOOLSET - compilers, editors, debuggers, monitors, optimizers, analyzers

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Modelling and Simulation Scalability and Application for Automotive Systems

Scaling the ESSE Simulation Performance – from a single model to thousands of models

EST’s modelling and multi-core, distributed simulation technology accommodates interconnected continuous domain models (differential equation) and discrete domain models (ECUs directly executing embedded software) composed into sub-systems – such as drivetrain models and traffic-light controller models – and systems, such as entire vehicles.

The technology scales to accommodate the distributed simulation of large-scale systems of varying fidelity – including, for example: (a) many high fidelity, autonomously controlled vehicle models being regulated by traffic control models in modelled urban areas, and (b) thousands of communicating low fidelity vehicle models containing high fidelity DSRC and MAC (mobile WiFi) models operating cooperatively in high density, city traffic.

High fidelity models – such as, a vehicle’s detailed control and plant models - will be simulated on separate cores. Some of the low fidelity models – such as, point-physics models of vehicles - can be aggregated by the many hundreds and simulated, as an aggregate, on a single core.  These modes of simulation of mixed high and low fidelity models comprising a system model are typical.

Modelling and Simulating Automotive Systems

For the automotive industry, the speed advantage and scalability of EST’s distributed modelling and high performance simulation technology enables the rapid investigation of active safety systems – such as, adaptive cruise control in car following scenarios, stability control in SUV and truck roll-over scenarios, and collision avoidance amongst communicating vehicles.

With the advent of the ISO 26262 Functional Safety standard and its beginning adoption by the automotive industry, the need for full vehicle verification along with the requirement to demonstrate that vehicles will not cause damage to humans, property and the environment (due to emissions and fuel consumption), necessitate the adoption of full model based design and verification through the supply chain.

The ESSE Systems Workbench provides a modelling system that extends high fidelity systems modelling to high fidelity systems-of-systems modelling, that can:

  • model the complete behaviour of an individual, human driven, vehicle
  • scale to model many vehicles, and hence all specified traffic level effects
  • model the engine emissions of those vehicles
  • accommodate the simulation of various models employed in building systems ranging from abstract mathematical models, to timing accurate operational models executing software, and inaccurate software in the loop type models
  • model wireless communications between many vehicle models with the required detail to make empirically justified claims about the safety of systems relying on those communications, and
  • support the EST un-V process, as well as, any of the commonly employed engineering processes, such as the V process

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