W
Willi Braun
Researcher at Bielefeld University of Applied Sciences
Publications - 16
Citations - 237
Willi Braun is an academic researcher from Bielefeld University of Applied Sciences. The author has contributed to research in topics: Modelica & Automatic differentiation. The author has an hindex of 9, co-authored 16 publications receiving 176 citations. Previous affiliations of Willi Braun include Bielefeld University.
Papers
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Journal ArticleDOI
The OpenModelica Integrated Environment for Modeling, Simulation, and Model-Based Development
Peter Fritzson,Adrian Pop,Karim Abdelhak,Adeel Ashgar,Bernhard Bachmann,Willi Braun,Daniel Bouskela,Robert Braun,Lena Buffoni,Francesco Casella,Rodrigo Castro,Rüdiger Franke,Dag Fritzson,Mahder Gebremedhin,Andreas Heuermann,Bernt Lie,Alachew Mengist,Lars Mikelsons,Kannan M. Moudgalya,Lennart Ochel,Arunkumar Palanisamy,Vitalij Ruge,Wladimir Schamai,Martin Sjölund,Bernhard Thiele,John Tinnerholm,Per Östlund +26 more
TL;DR: This overview paper gives an up-to-date description of the capabilities of the OpenModelica system, short overviews of used open source symbolic and numeric algorithms with pointers to published literature, tool integration aspects, some lessons learned, and the main vision behind its development.
Proceedings ArticleDOI
Solving large-scale Modelica models: new approaches and experimental results using OpenModelica
TL;DR: Recently implemented sparse solver techniques in OpenModelica are described in order to efficiently compile and simulate large-scale Modelica models.
Proceedings ArticleDOI
The OpenModelica Integrated Modeling, Simulation, and Optimization Environment
Peter Fritzson,Adrian Pop,Adeel Asghar,Bernhard Bachmann,Willi Braun,Robert Braun,Lena Buffoni,Francesco Casella,Rodrigo Castro,Alejandro Danós,Rüdiger Franke,Mahder Gebremedhin,Bernt Lie,Alachew Mengist,Kannan M. Moudgalya,Lennart Ochel,Arunkumar Palanisamy,Wladimir Schamai,Martin Sjölund,Bernhard Thiele,Volker Waurich,Per Östlund +21 more
TL;DR: An up-to-date brief description of the capabilities of the OpenModelica system, and the main vision behind its development are given.
Proceedings ArticleDOI
Symbolically Derived Jacobians Using Automatic Differentiation - Enhancement of the OpenModelica Compiler
TL;DR: This paper describes the corresponding implementation work within the OpenModelica Compiler (OMC) to create a symbolic derivative module that generates symbolically partial derivatives in order to calculate Jacobian matrices with respect to dierent variables.
Proceedings ArticleDOI
Integrated Debugging of Equation-Based Models
Martin Sjölund,Francesco Casella,Adrian Pop,Adeel Asghar,Peter Fritzson,Willi Braun,Lennart Ochel,Bernhard Bachmann +7 more
TL;DR: This paper presents the first integrated debugger for equation-based languages like Modelica, which can combine static and dynamic methods for run-time debugging of equation- based Modelica models during simulations.