4 papers
On Koopman Resolvents and Frequency Response of Nonlinear Systems
Yoshihiko Susuki, Natsuki Katayama, Alexandre Mauroy +1
This paper proposes a novel formulation of frequency response for nonlinear systems in the Koopman operator framework. This framework is a promising direction for the analysis and…
Global Linearization of Parameterized Nonlinear Systems with Stable Equilibrium Point Using the Koopman Operator
Natsuki Katayama, Alexandre Mauroy, Yoshihiko Susuki
The Koopman operator framework enables global analysis of nonlinear systems through its inherent linearity. This study aims to clarify spectral properties of the Koopman operators…
Koopman Operators for Global Analysis of Hybrid Limit-Cycling Systems: Construction and Spectral Properties
Natsuki Katayama, Yoshihiko Susuki
This paper reports a theory of Koopman operators for a class of hybrid dynamical systems with globally asymptotically stable periodic orbits, called hybrid limit-cycling systems. W…
Koopman Analysis of the Singularly-Perturbed van der Pol Oscillator
Natsuki Katayama, Yoshihiko Susuki
The Koopman operator framework holds promise for spectral analysis of nonlinear dynamical systems based on linear operators. Eigenvalues and eigenfunctions of the Koopman operator,…