ModelingToolkitStandardLibrary.jl
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ModelingToolkitStandardLibrary.jl | auto-07p | |
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9.1 | 7.8 | |
3 days ago | 22 days ago | |
Julia | Fortran | |
MIT License | - |
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ModelingToolkitStandardLibrary.jl
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Is Julia is a good first language for children/teens?
I see, yes, RigidBodySim is in a bit of a bad place since Twan and Robin spend all of their time doing "real robotics projects" now (they are both at Boston Dynamics). I think it's fine though, since I don't think that that is the right implementation anymore anyways. Robotics simulators like Drake, (Diff)Taichi, MuJoCo, etc. end up numerically unstable when trying to model real physics, which is why still the big industrial simulations use Dymola. This is why these days it's all going the route of ModelingToolkit. MTK plus a differentiable simulator (DifferentialEquations.jl) already runs circles around MuJoCo and DiffTaichi, it just needs to complete its library to make building rigid body simulations a lot simpler. Once the mechanical components portion of the ModelingToolkit Standard Library is completed, we plan to demonstrate some things like control of UAVs and such. That's all slated for this year (and is connected to some things going on in JuliaSim), in which case I think we'll be in a much better state for this domain.
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‘Machine Scientists’ Distill the Laws of Physics from Raw Data
The thing to watch in the space of Simulink/Modelica is https://github.com/SciML/ModelingToolkit.jl . It's an acausal modeling system similar to Modelica (though extended to things like SDEs, PDEs, and nonlinear optimization), and has a standard library (https://github.com/SciML/ModelingToolkitStandardLibrary.jl) similar to the MSL. There's still a lot to do, but it's pretty functional at this point. The two other projects to watch are FunctionalModels.jl (https://github.com/tshort/FunctionalModels.jl, which is the renamed Sims.jl), which is built using ModelingToolkit.jl and puts a more functional interface on it. Then there's Modia.jl (https://github.com/ModiaSim/Modia.jl) which had a complete rewrite not too long ago, and in its new form it's fairly similar to ModelingToolkit.jl and the differences are more in the details. For causal modeling similar to Simulink, there's Causal.jl (https://github.com/zekeriyasari/Causal.jl) which is fairly feature-complete, though I think a lot of people these days are going towards acausal modeling instead so flipping Simulink -> acausal, and in that transition picking up Julia, is what I think is the most likely direction (and given MTK has gotten 40,000 downloads in the last year, I think there's good data backing it up).
And quick mention to bring it back to the main thread here, the DataDrivenDiffEq symbolic regression API gives back Symbolics.jl/ModelingToolkit.jl objects, meaning that the learned equations can be put directly into the simulation tools or composed with other physical models. We're really trying to marry this process modeling and engineering world with these "newer" AI tools.
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auto-07p VS BifurcationKit.jl - a user suggested alternative
2 projects | 11 Feb 2024
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Error: multiple definitions of block data
The odepack.o is from a .f file and homcont.o is from a .f90. I'm not sure how to fix this error. I can't edit the homcont.f90 file, but I can edit odepack.f. Can someone help me with this? Thanks :)
What are some alternatives?
PySR - High-Performance Symbolic Regression in Python and Julia
OrdinaryDiffEq.jl - High performance ordinary differential equation (ODE) and differential-algebraic equation (DAE) solvers, including neural ordinary differential equations (neural ODEs) and scientific machine learning (SciML)
Modia.jl - Modeling and simulation of multidomain engineering systems
SciMLTutorials.jl - Tutorials for doing scientific machine learning (SciML) and high-performance differential equation solving with open source software.
pySRURGS - Symbolic regression by uniform random global search
NeuralPDE.jl - Physics-Informed Neural Networks (PINN) Solvers of (Partial) Differential Equations for Scientific Machine Learning (SciML) accelerated simulation
diffeqpy - Solving differential equations in Python using DifferentialEquations.jl and the SciML Scientific Machine Learning organization
ModelingToolkit.jl - An acausal modeling framework for automatically parallelized scientific machine learning (SciML) in Julia. A computer algebra system for integrated symbolics for physics-informed machine learning and automated transformations of differential equations
Causal.jl - Causal.jl - A modeling and simulation framework adopting causal modeling approach.
DiffEqBase.jl - The lightweight Base library for shared types and functionality for defining differential equation and scientific machine learning (SciML) problems
FunctionalModels.jl - Equation-based modeling and simulations in Julia