Koopman-based feedback design with stability guarantees

R Strässer, M Schaller, K Worthmann… - … on Automatic Control, 2024 - ieeexplore.ieee.org
We present a method to design a state-feedback controller ensuring exponential stability for
nonlinear systems using only measurement data. Our approach relies on Koopman-operator …

Data-driven linearization of dynamical systems

G Haller, B Kaszás - Nonlinear Dynamics, 2024 - Springer
Dynamic mode decomposition (DMD) and its variants, such as extended DMD (EDMD), are
broadly used to fit simple linear models to dynamical systems known from observable data …

Markov chain Monte Carlo for Koopman-based optimal control: Technical report

J Hespanha, K Camsari - arXiv preprint arXiv:2405.01788, 2024 - arxiv.org
We propose a Markov Chain Monte Carlo (MCMC) algorithm based on Gibbs sampling with
parallel tempering to solve nonlinear optimal control problems. The algorithm is applicable …

Modeling Nonlinear Dynamics from Videos

A Yang, J Axås, F Kádár, G Stépán, G Haller - arXiv preprint arXiv …, 2024 - arxiv.org
We introduce a method for constructing reduced-order models directly from videos of
dynamical systems. The method uses a non-intrusive tracking to isolate the motion of a user …

Learning Global Linear Representations of Truly Nonlinear Dynamics

T Breunung, F Kogelbauer - arXiv preprint arXiv:2408.03437, 2024 - arxiv.org
While linear systems are well-understood, no explicit solution exists for general nonlinear
systems. Thus, it is desirable to make the understanding of linear system available in the …

Markov Chain Monte Carlo for Koopman-Based Optimal Control

J Hespanha, K Çamsari - IEEE Control Systems Letters, 2024 - ieeexplore.ieee.org
We propose a Markov Chain Monte Carlo (MCMC) algorithm based on Gibbs sampling with
parallel tempering to solve nonlinear optimal control problems. The algorithm is applicable …

On the lifting and reconstruction of nonlinear systems with multiple invariant sets

S Pan, K Duraisamy - Nonlinear Dynamics, 2024 - Springer
The Koopman operator provides a linear perspective on non-linear dynamics by focusing on
the evolution of observables in an invariant subspace. Observables of interest are typically …