| Time: | November 22, 2024 |
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Prof. Gerwald Lichtenberg
Department of Biomedical Engineering
Hamburg University of Applied Sciences (HAW)
Hamburg, Germany
Friday 2024-11-22 2 p.m.
IST Seminar Room 2.255 - Pfaffenwaldring 9 - Campus Stuttgart-Vaihingen
Abstract
The emerging complexity of general nonlinear time-invariant models is an obstacle for their applicability to large scale systems. One possible key to cope with the curse of dimensionality is the restriction to some special classes of nonlinearities. Multilinear time-invariant (MTI) models are of special interest here: some applications have intrinsic multilinear behaviour, others can be multilinearized, and any binary or multi-valued subsystem can be exactly represented. Whereas linear (LTI) models have parameter matrices and analysis methods and tools rely on linear algebra, MTI models are represented by parameter tensors for which multilinear algebra is the mathematical basis. The presentation will show basic principles and applications of MTI models in fields of power networks and HVAC systems.
Biographical Information
Gerwald Lichtenberg studied Physics at the Universities of Heidelberg and Hamburg, received his PhD in control engineering 1998 from the Hamburg University of Technology (TUHH) - supervised by Jan Lunze and his habilitation in systems theory from TUHH in 2012. Since 2013, he is Professor of Physics and Control Engineering at the Faculty of Life Sciences of the University of Applied Sciences (HAW) and scientific director of the Fraunhofer application center for Integration of Local Energy Systems ILES, both in Hamburg. His research areas are in the fields of model-based and learning control as well as fault diagnosis and supervisory control of complex systems such as local energy networks, building systems, or particle accelerators. Multilinear modeling methods and applications of tensor decomposition methods for control engineering problems are main foci of his work.