Exact controllability of a class of nonlinear distributed parameter systems using back-and-forth iterations

V Natarajan, HC Zhou, G Weiss… - International Journal of …, 2019 - Taylor & Francis
We investigate the exact controllability of a nonlinear plant described by the equation x˙(t)=
A x (t)+ B u (t)+ BNN (x (t), t), where t≥ 0. Here A is the infinitesimal generator of a strongly …

A linear dissipativity approach to incremental input-to-state stability for a class of positive Lur'e systems

V Piengeon, C Guiver - International Journal of Control, 2024 - Taylor & Francis
Incremental stability properties are considered for certain systems of forced, nonlinear
differential equations with a particular positivity structure. An incremental stability estimate is …

Infinite-dimensional Lur'e systems with almost periodic forcing

ME Gilmore, C Guiver, H Logemann - Mathematics of Control, Signals, and …, 2020 - Springer
We consider forced Lur'e systems in which the linear dynamic component is an infinite-
dimensional well-posed system. Numerous physically motivated delay and partial …

Approximating the steady-state periodic solutions of contractive systems

S Coogan, M Margaliot - IEEE Transactions on Automatic …, 2018 - ieeexplore.ieee.org
We consider contractive systems whose trajectories evolve on a compact and convex state-
space. It is well-known that if the time-varying vector field of the system is periodic, then the …

Minimal order controllers for output regulation of nonlinear systems

V Natarajan, G Weiss - IFAC Journal of Systems and Control, 2019 - Elsevier
This paper is about the nonlinear local error feedback regulator problem. The plant is a
nonlinear finite-dimensional system with a single control input and a single output and it is …

Approximating the frequency response of contractive systems

M Margaliot, S Coogan - arxiv preprint arxiv:1702.06576, 2017 - arxiv.org
We consider contractive systems whose trajectories evolve on a compact and convex state-
space. It is well-known that if the time-varying vector field of the system is periodic then the …

Minimal order controllers for output regulation of locally stable nonlinear systems

V Natarajan, G Weiss - 53rd IEEE Conference on Decision and …, 2014 - ieeexplore.ieee.org
This paper is about the nonlinear error feedback regulator problem. The plant is a nonlinear
finite-dimensional single-input-single-output system and it is locally exponentially stable …

How to establish the exact controllability of nonlinear DPS using iterations back and forth in time

V Natarajan, HC Zhou, G Weiss - 2017 American Control …, 2017 - ieeexplore.ieee.org
Consider a nonlinear distributed parameter system (DPS) described by ẋ (t)= Ax (t)+ Bu (t)+
BNN (x (t), t) for all t≥ 0. Here A is the infinitesimal generator of a strongly continuous group …

Using System Theory and Energy Methods to prove Existence of Non-Linear PDE's

H Zwart - IFAC-PapersOnLine, 2015 - Elsevier
In this discussion paper we present an idea of combining techniques known from systems
theory with energy estimates to show existence for a class of non-linear partial differential …