As a 10+ year old company working on HVAC system modeling on MATLAB/Simulink, we would like to transition to Julia for faster simulation and modeling of our Simulink model, where we also plan to accelerate the Simulation via surrogates. However, our Simulink model contains s-functions and the varia…

Well, if you continue to use Matlab solvers you need a Matlab license. But you will get the advantages of Julia only if you do NOT use the Matlab solvers but the DifferentialEquations.jl package. There are two different types of FMUs, FMU for co-simulation and FMU for model export ( FMI Standard: Co-…

I looked around for an s-function API and couldn’t find one. I think that it is short for “Simulink Function” and I think that MathWorks intended it to be a MEX interface. This is pretty much most of what I found that was useful. I imagine that if you wanted to keep your existing s-function source …

Hello @ufechner7 I’ve been looking at moving my current Simulink model over to Julia’s ecosystem and I was wondering if you know of any resources/guides to help me get started, considering that you have gone through that experience. What I’m most concerned about actually is how can I visualize the …

I’ve been looking at moving my current Simulink model over to Julia’s ecosystem and I was wondering if you know of any resources/guides to help me get started, considering that you have gone through that experience. Same here. I am especially interested in using FMI for model export of Simulink m…

Did you look at GitHub - ThummeTo/FMI.jl: FMI.jl is a free-to-use software library for the Julia programming language which integrates FMI (fmi-standard.org): load or create, parameterize, differentiate and simulate FMUs seamlessly inside the Julia programming language! ?

[image] acxz: how can I visualize the output of ModellingToolkit Well, I just plot the output using one of the many plotting packages. Usually I write custom plot functions that plot for example four line plots in one diagram similar to the Simulink oscilloscope. I had hardly any need yet to…

Thanks for the link to FMI.jl, will definitely need that to import the exported Simulink FMI’s into Julia. Sorry I should have been more clear. I was asking more along the lines of visualizing the associated graphical model that is modelled in ModelingToolkit, akin to how we edit model files in Sim…

I looked through the docs, but it was not immediately clear if fmiSimulate was only applicable for co-simulation or if it interfaces more generally to the SciML/DiffEq ecosystem. Looking at the src, I now see that it is.

I use Control Block Diagram with TikZ - Overleaf, Online LaTeX Editor , but that is time consuming. Good for scientific papers, not for daily engineering work. I think Home Â· JuliaSimControl has a graphical model editor, but I never used it.

Thanks for the JuliaSim link. Another thought considering that I’d like a graphical view of ModelingToolkit, was if I can graphically visualize an FMU that is exported from ModelingToolkit?

MATLAB/Simulink model simulation and modeling with s-functions and variable-step solver

New to Julia

ufechner7 September 25, 2023, 1:45pm 8

A simple example for plotting the result of a ModelingToolkit model can be found here: Step response using ModelingToolkit

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MATLAB/Simulink model simulation and modeling with s-functions and variable-step solver

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