A unique feature of the ESSE Systems Engineering Workbench is the ability to construct large-scale distributed systems from any mix of EST, 3rd party vendor, and proprietary and open source models with their respective simulators and relevant support tools.

GRAHAM HELLESTRAND
chief executive officer

INTEGRATED MODEL-BASED DESIGN, DEVELOPMENT AND VERIFICATION
Integral to the design of the ESSE Systems Engineering 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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Solutions for the Engineering of Cyber-Physical Systems and Systems of Systems

The solutions that EST’s model-based technologies and methodologies enable have wide scope in a number of markets. In general, solutions and empirical investigations are enabled for problems posed that involve the automatic control (called cybernetics) of sets of physical plant – that is, the investigation, analysis and design of cyber-physical systems.

Connected Vehicles Coordinating Control for Safety
Connected Vehicles Coordinating Control for Safety

In the automotive space, for example, the scope extends from detailed requirements to executable specifications, architecture, optimization, design and verification of control systems governing the spatially separated plant. The control systems need to cooperate to verifiably produce the required behaviour of their plant, from (i) an entire vehicle, (ii) vehicles safely cooperating in traffic, through to (iii) the control of terrestrial transport systems. 

Apart from the automotive sector, other important and challenging sectors that require high fidelity modelling and high performance simulation include industrial automation, transport, military, civilian aeronautical and nautical, and the combination of these sectors. In all sectors, multiple mobile systems (called, systems-of-systems) operate using networked wireless communications to control interactions through some degree of autonomous control. In particular, the military sector may require the combined coordination of terrestrial, aeronautical and nautical modes of transport with the various degrees of immediacy that unpredictably present under battlefield conditions.

In this Solutions section, we highlight the two major engineering disciplines in which EST’s technologies and methodologies are playing a major role – Automotive Vehicle Engineering and Intelligent Transport Systems (ITS). Although these disciplines appear to be far apart, in fact, they share common modelling and simulation technologies and methodologies.

Automotive Vehicle Engineering - From the vehicle engineering side, we will show how to verify an entire high fidelity vehicle model using an unlimited number of traffic scenarios involving a few to many hundreds of vehicles in urban, highway and sparse traffic conditions. This verification will include crashes that would cause fatalities if validated using a physical mule vehicle.

For automotive Active Safety we show that meeting the various Safety Standards and providing the degree of fault tolerance that the autonomous control associated with active safety subsystems requires is best (and possibly only) satisfied through the model-driven, cyber-physical, concurrent design and verification process. The rigorous empirical testing of vehicles, particularly in urban traffic environments, can only be achieved using validated high fidelity models of vehicles which incorporate non-autonomous and autonomous driver models in large-scale simulations. Physical mule vehicles cannot achieve the same results.

Vehicle to Vehicle and Vehicle to Infrastructure Communications
Vehicle to Vehicle and Vehicle to Infrastructure Communications

Intelligent Transport Systems (ITS) - on the ITS side, we will show how to introduce high fidelity vehicle models into traffic scenarios, containing mainly point physics vehicle models, in order to calculate accurate instantaneous and aggregate levels of many gas emissions, and fuel consumption across the entire cohort of vehicles in the traffic study.

A unique capability of EST’s ESSE Systems Engineering Workbench is the ability to construct large scale distributed systems from any mix of EST, 3rd party vendor, and proprietary and open-source models with their respective simulators and relevant support tools. This unique feature provides the capabilities for engineers and managers to solve systems and systems-of-systems design and engineering problems that have remained intractable due to complexity, scale and/or lack of appropriate tools and methodologies.