Simulator editor

Mats Johansson : February 17, 2014 10:21 AM : Demos, Frontpage, Project News

A high-level editor for heavy vehicle simulators with operator-in-the-loop is developed – easy to use and require no special knowledge in the underlying software components or simulation methods. The editor is aimed for users doing either i) human-machine-interaction studies, ii) evaluation studies of new machine concepts or alteration in the design or control of existing vehicles or iii) demonstrators or marketing simulators. Features include: modifying the 3D surroundings of the vehicle, e.g., terrain and dynamic objects, modifying the operator interface, modifying powertrain, streaming of selected data from simulation (vehicle, driver or surrounding), e.g., for purpose of creating statistics or visualization.

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Simovate Workshop 2

Mats Johansson : February 17, 2014 9:35 AM : Frontpage, Project News

Workhsop 2 was held Jan 23 2014 at Umeå University. [Link to news item]

workshop_pic program

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International Modelica Conference

Mats Johansson : February 17, 2014 9:32 AM : Project News

The FMI/FMU standard, on which the simovate technology platform is build, will be a central part of the International Modelica conference

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Distributed Simulation

Mats Johansson : February 10, 2014 1:59 PM : Demos, Project News

A protocol for FMI over network was implemented. Using this protocol, simulation slaves could run on different machines and help distribute the load, as well as simplify collaboration.

 

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Composer

Martin Servin : December 20, 2013 8:57 PM : Demos, Project News

A prototype multilingual model composition tool

Composer is a prototype tool for composing simulation of dynamical systems. The tool is

  • multilingual
  • database centric
  • web based

composer

The prototype combine the SVG format with the FMI standard. An XML-based model description of FMI is used for describing the interface for each component, in a language independent way. Simulation parameters can also be expressed on this form, and integrated as metadata into the SVG image.

The prototype, using SVG in conjunction with FMI, is implemented in JavaScript and allow creation and modification of block diagrams directly in the web browser. Generated SVG images are sent to the server where they are translated to program code, allowing the simulation of the dynamical system to be executed using selected implementations. An alternative mode is to generate optimization problem from the system definition and model parameters. The simulation/optimization result is returned to the web browser where it is plotted or processed using other standard libraries.

The composer application is implemented and demonstrator for simulation and optimization of a fiber production proces at a paper plant. The models are implemented in Modelica (as ODE) and in Python (as a discrete event system) but share the same model data, that may be edited in Composer. From the model descripton a mixed integer optimization problem can be generated and solved.

Demo: link

Further reading: abstract, slide

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