Passivity-preserving model reduction for descriptor systems via spectral factorization

Citing

If you use this project for academic work, please consider citing our publication:

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How to install

Clone the project and navigate to the folder:

shell> git clone https://github.com/steff-mueller/spectralFactorMORdescriptor.git
shell> cd spectralFactorMORdescriptor

Activate and instantiate the Julia environment using the Julia package manager to install the required packages:

pkg> activate .
pkg> instantiate

How to reproduce

The scripts/ folder contains TOML configuration files for the different experiments from our paper:

TOML configuration file	Experiment
scripts/RCL-1-SISO.toml	Index-1 SISO descriptor system
scripts/RCL-1-MIMO.toml	Index-1 MIMO descriptor system
scripts/RCL-2-SISO.toml	Index-2 SISO descriptor system
scripts/RCL-2-MIMO.toml	Index-2 MIMO descriptor system

Point the RCL_CONFIG environment variable to the experiment you want to run. Use the scripts/rcl.jl script to run an experiment. For example, to run scripts/RCL-2-SISO.toml, execute the following commands:

shell> cd spectralFactorMORdescriptor
shell> export RCL_CONFIG="scripts/RCL-2-SISO.toml"
shell> julia --project=. scripts/rcl.jl

The experiment results are stored under data/.

Julia package

The project contains a Julia package under src/SpectralFactorMOR which you can include in your own Julia projects to use the methods. See the instructions here.

License

Distributed under the MIT License. See LICENSE for more information.

Contact

Steffen Müller - steffen.mueller@simtech.uni-stuttgart.de
Benjamin Unger - benjamin.unger@simtech.uni-stuttgart.de