Scalable design of structured controllers using chordal decomposition

Y Zheng, RP Mason… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
We consider the problem of designing static feedback gains subject to a priori structural
constraints, which is a nonconvex problem in general. Previous work has focused on either …

Chordal sparsity in control and optimization of large-scale systems

Y Zheng - 2019 - ora.ox.ac.uk
Many large-scale systems have inherent structures that can be exploited to facilitate their
analysis and design. This thesis investigates how chordal graph properties can be used to …

On the stability margin of networked dynamical systems

Y Kim - IEEE Transactions on Automatic Control, 2017 - ieeexplore.ieee.org
This paper is concerned with the stability (gain and phase) margin of networked dynamical
systems, eg, vehicles in formation, each of which has access to the state of its neighbors and …

Structural results for partially nested lqg systems over graphs

A Nayyar, L Lessard - 2015 American Control Conference …, 2015 - ieeexplore.ieee.org
We identify a broad class of decentralized output-feedback LQG systems for which the
optimal control strategies have a simple and intuitive estimation structure. We consider …

Guaranteed stability margins for decentralized linear quadratic regulators

M Kashyap, L Lessard - IEEE Control Systems Letters, 2023 - ieeexplore.ieee.org
It is well-known that linear quadratic regulators (LQR) enjoy guaranteed stability margins,
whereas linear quadratic Gaussian regulators (LQG) do not. In this letter, we consider …

Optimal Control of Multi-Agent Systems with Processing Delays

M Kashyap, L Lessard - IEEE Transactions on Automatic …, 2023 - ieeexplore.ieee.org
In this article, we consider a cooperative control problem involving a heterogeneous network
of dynamically decoupled continuous-time linear plants. The (output-feedback) controllers …

Control of Autonomous Vehicles Via Multistage Linear Feedback Design

V Radisavljevic-Gajic - Journal of Dynamic Systems …, 2023 - asmedigitalcollection.asme.org
In this paper, we show how autonomous vehicles performing a certain task can be controlled
from one command center in order to achieve certain goals. The command center provides …

Explicit agent-level optimal cooperative controllers for dynamically decoupled systems with output feedback

M Kashyap, L Lessard - … IEEE 58th Conference on Decision and …, 2019 - ieeexplore.ieee.org
We consider a dynamically decoupled network of agents each with a local output-feedback
controller. We assume each agent is a node in a directed acyclic graph and the controllers …

Optimal decentralized wavelength control in light sources for lithography

M Kashyap - arXiv preprint arXiv:2409.04721, 2024 - arxiv.org
Pulsed light sources are a critical component of modern lithography, with fine light beam
wavelength control paramount for wafer etching accuracy. We study optimal wavelength …

Agent-level optimal LQG control of dynamically decoupled systems with processing delays

M Kashyap, L Lessard - … 59th IEEE Conference on Decision and …, 2020 - ieeexplore.ieee.org
We consider the problem of controlling a set of dynamically decoupled plants where the
plants' subcontrollers communicate with each other according to a fixed and known network …