Release 2.20.0

Enhancements

• HopsanCore

  • Move real-time simulation main loop into HopsanCore (from GUI) resulting in much better performance (animation mode)
  • Temporary files created by lookup components are now deleted on Linux systems when the model is closed
    (On Windows they will remain in the temp directory)

• HopsanGUI

  • Show HTML description in FMIWrapper component (extension library) if available in FMU
  • Replace functionality added to FindWidget for text files
  • Import/export parameter data to/from SSV format
  • Support SSV parameter sets for components (can be specified in component xml)
  • Add 'Energy Density Spectrum', 'Power Density Spectrum' and 'Root Mean Square' of vector to frequency analysis
  • Added "Open model file" option in right-click menu for subsystem components in library widget
  • Hide "Open source code" option for components that have no source code specified
  • Double-clicking on subsystem components opens model file
  • HCOM: Add steady-state identification, function ssi()
  • HCOM: New function: cut()
  • HCOM: Support elseif and nested if-statements
  • Make GUI fall back to empty port icon graphics for unknown node types
    This makes it possibly to register and use custom node types in custom component libraries
    Note! Custom nodes may not yet work in all cases, such as in code generation

• Ops

  • Support for surrogate models in Ops algorithms
    Surrogate models are fast numerical approximations of the objective functions.
    The implementation is based on polynomial response surfaces, as described by: https://doi.org/10.1007/s11081-014-9247-9
    To active surrogate models, add the command surrogatemodel in the HCOM script.
    The interval setting specifies how many evaluations the surrogate model is used before it is updated.

Bug Fixes

• HopsanGUI

  • Update default parameters when changing FMU in FMIWrapper component
  • Ignore file change warning after saving a file. At least on Windows the file would otherwise be reported as modified
  • Loading HMF components as internal subsystems was forgotten when saving the model
  • HCOM: Fix SymHop evaluation of model parameters ending with 'e'
  • HCOM: Fix symhop evaluation of power if variable contains underscore, ex: a_b^2
  • HCOM: Fix hg() (highest generation) function, it did always return 0
  • Fix crash when adding new component to library
  • Ensure that error and warning messages about missing files when loading libraries actually contain the missing path
  • Spectrum/FFT dialog Crashes GUI if simulation was stopped by stop component
    time data was not truncated to actual number of simulated samples

• HopsanCore

  • Fix signal component sorting when a ReadMultiPort with multiple connections is present

Component Libraries

• Standard Component Library: MechanicTranslationalLosslessConnector XML file error
• Standard Component Library: SignalSteadyStateIdentifier