[HTML][HTML] An overview of structural systems theory

G Ramos, AP Aguiar, S Pequito - Automatica, 2022 - Elsevier
This paper provides an overview of the research conducted in the context of structural (or
structured) systems. These are parametrized models used to assess and design system …

Structural systems theory: an overview of the last 15 years

G Ramos, AP Aguiar, S Pequito - arXiv preprint arXiv:2008.11223, 2020 - arxiv.org
In this paper, we provide an overview of the research conducted in the context of structural
systems since the latest survey by Dion et al. in 2003. We systematically consider all the …

Minimum input selection for structural controllability

A Olshevsky - 2015 American Control Conference (ACC), 2015 - ieeexplore.ieee.org
Given a linear system ẋ= Ax, where A is an n× n matrix with m nonzero entries, we consider
the problem of finding the smallest set of state variables to affect with an input so that the …

Minimum number of probes for brain dynamics observability

S Pequito, P Bogdan, GJ Pappas - 2015 54th IEEE Conference …, 2015 - ieeexplore.ieee.org
In this paper, we address the problem of placing sensor probes in the brain such that the
system dynamics' are generically observable. The system dynamics whose states can …

Structural minimum controllability problem for switched linear continuous-time systems

S Pequito, GJ Pappas - Automatica, 2017 - Elsevier
This paper addresses a structural design problem in control systems, and explicitly takes
into consideration the possible application to large-scale systems. More precisely, we aim to …

The robust minimal controllability and observability problem

G Ramos, D Silvestre, C Silvestre - International Journal of …, 2021 - Wiley Online Library
In this paper, we study the Robust Minimal Controllability and Observability Problem
(rMCOP). The scenario that motivated this question is related to the design of a drone …

Analysis and design of electric power grids with p-robustness guarantees using a structural hybrid system approach

G Ramos, S Pequito, AP Aguiar… - 2015 European Control …, 2015 - ieeexplore.ieee.org
In this paper, we address the analysis of resilience properties related to electric power grids
modeled as a (large) dynamical system. To this end, we introduce the notion of p-robustness …

The robust minimal controllability problem for switched linear continuous-time systems

G Ramos, S Pequito, C Caleiro - 2018 Annual American …, 2018 - ieeexplore.ieee.org
In this paper, we address the robust minimal controllability problem for switched linear
continuous-time systems. The problem is to determine the minimal subset of state variables …

Structural analysis and design of dynamic-flow networks: implications in the brain dynamics

S Pequito, AN Khambhati, GJ Pappas… - 2016 American …, 2016 - ieeexplore.ieee.org
In this paper, we study dynamic-flow networks, ie, networks described by a graph whose
weights evolve according to linear differential equations. Further, these linear differential …

Minimum structural sensor placement for switched linear time-invariant systems and unknown inputs

EA Reed, G Ramos, P Bogdan, S Pequito - Automatica, 2022 - Elsevier
In this paper, we study the structural state and input observability of continuous-time
switched linear time-invariant systems and unknown inputs. First, we provide necessary and …