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Research Group Computational Methods in Systems and Control Theory

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Research Group Computational Methods in Systems and Control Theory
(Prof. Dr. Peter Benner)

News

Preprint: Low-Rank Newton-ADI methods for Large Nonsymmetric Algebraic Riccati Equations


November 20th, 2014
Peter Benner, Patrick Kürschner and Jens Saak discuss a numerical algorithm for solving large-scale, nonsymmetric algebraic Ricatti equations, which combines a Newton's method with the low-rank ADI iteration for Sylvester equations.

Preprint: Balancing based model reduction for structured index-2 unstable descriptor systems with application to flow control


November 12th, 2014
Peter Benner, Jens Saak and M. Monir Uddin combine an approach for Balanced truncation of unstable systems with the efficient treatment of Stokes-like index-2 DAE structures and the latest techniques for implementing the low-rank ADI as well as choosing appropriate ADI shifts.

Preprint: On GPU Acceleration of Common Solvers for (Quasi-) Triangular Generalized Lyapunov Equations


October 15th, 2014
Martin Köhler und Jens Saak have extended the already optimized methods for the solution of matrix Lyapunov equations with (quasi) triangular coefficient matrices to support accelerator devices. Thus, they have shown the main problems of using an accelerator device in the Bartels-Stewart algorithm and presented mathematical solutions for these problems.
DAAD

CSC News: Workshop within DAAD project Optimal Damping of Vibrating Systems in Osijek (Croatia)


October 7th, 2014
Peter Benner, Jonas Denißen, Patrick Kürschner and Jens Saak attend the workshop within the DAAD project Optimal Damping of Vibrating Systems in Osijek (Croatia). The workshop is supported by the German Academic Exchange Service (DAAD), Zeidler-Forschungs-Stiftung and the department of mathematics, J. J. Strossmayer University of Osijek.
GAMM DynCont

Events: Workshop and meeting of GAMM activity group "Dynamics and Control"


September 24th, 2014
This years second meeting of the GAMM activity group on "Dynamics and Control" will take place together with the GMA activity groups 1.30 and 1.40 as usual on a bi-anual basis. The meeting is scheduled September 22 to 26 at the Momentum hotel Anif near Salzburg. The talks of the GAMM activity group will take place on Wednesday 24th and contain contributions by Peter Benner and Norman Lang. Also Jens Saak gives a talk in the GMA activity group 1.30 on Friday September 26.

Upcoming seminar talks

Date Speaker(s) Title
09.12.14 Akwum Onwunta All-at-once approach to optimal control problems constrained by PDEs with uncertain inputs
16.12.14 Alfredo Remon Computational kernels for SPD arrowhead matrices

Date Speaker(s) Title

Date Speaker(s) Title
10.12.14 Petar Mlinaric Projection-Based Model Reduction of Multi-Agent Systems Using Graph Partitions

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Jens Saak, saak@mpi-magdeburg.mpg.de