F
Fredi Tröltzsch
Researcher at Technical University of Berlin
Publications - 158
Citations - 5842
Fredi Tröltzsch is an academic researcher from Technical University of Berlin. The author has contributed to research in topics: Optimal control & Pointwise. The author has an hindex of 36, co-authored 156 publications receiving 5247 citations. Previous affiliations of Fredi Tröltzsch include Chemnitz University of Technology & University of Hamburg.
Papers
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Journal ArticleDOI
Second-Order and Stability Analysis for State-Constrained Elliptic Optimal Control Problems with Sparse Controls
Eduardo Casas,Fredi Tröltzsch +1 more
TL;DR: The main novelty of the paper is the presence of the $L^1$-norm of the control as part of the objective functional that eventually leads to sparsity of the optimal control functions.
Journal ArticleDOI
A coupled Maxwell integrodifferential model for magnetization processes
Serge Nicaise,Fredi Tröltzsch +1 more
TL;DR: In this article, a mathematical model for instationary magnetization processes is considered, where the underlying spatial domain includes electrically conducting and nonconducting regions, and the model accounts for the magnetic induction law that couples the given electrical voltage with the induced electrical current in the induction coil.
Book ChapterDOI
Analytical, Optimal, and Sparse Optimal Control of Traveling Wave Solutions to Reaction-Diffusion Systems
TL;DR: This work deals with the position control of selected patterns in reaction-diffusion systems using the Schlogl and FitzHugh-Nagumo model and extends standard optimal control to so-called sparse optimal control that results in very localized control signals and allows the analysis of second order optimality conditions.
Journal Article
Optimality conditions for a class of optimal boundary control problems with quasilinear elliptic equations
Eduardo Casas,Fredi Tröltzsch +1 more
TL;DR: In this paper, a class of optimal control problems for quasilinear elliptic equations is considered, where the coefficients of the elliptic differential operator depend on the state function.
Journal ArticleDOI
On an Augmented Lagrangian SQP Method for a Class of Optimal Control Problems in Banach Spaces
TL;DR: The method is shown to be quadratically convergent, if the optimality system of the standard non-augmented SQP method is strongly regular in the sense of Robinson, and this result is applied to a test problem for the heat equation with Stefan-Boltzmann boundary condition.