activity
20142023
most citedSISO Output Affine Feedback Transformation Group and Its Faa di Bruno Hopf Algebra

18 citations · 50 across the 11 of their papers we have counts for

collaborators

11 papers

eess.SY2023★ 1 cited

Decompositions of Nonlinear Input-Output Systems to Zero the Output

W. Steven Gray, Kurusch Ebrahimi-Fard, Alexander Schmeding

Consider an input-output system where the output is the tracking error given some desired reference signal. It is natural to consider under what conditions the problem has an exact…

eess.SY2022

Entropy of Generating Series for Nonlinear Input-Output Systems and Their Interconnections

W. Steven Gray

This paper has two main objectives. The first is to introduce a notion of entropy that is well suited for the analysis of nonlinear input-output systems that have a Chen-Fliess ser…

eess.SY2021

Formal Power Series Approach to Nonlinear Systems with Additive Static Feedback

G. S. Venkatesh, W. Steven Gray

The goal of this paper is to compute the generating series of a closed-loop system when the plant is described in terms of a Chen-Fliess series and an additive static output feedba…

eess.SY2021

Additive Networks of Chen-Fliess Series: Local Convergence and Relative Degree

W. Steven Gray, Luis A. Duffaut Espinosa, Kurusch Ebrahimi-Fard

Given an additive network of input-output systems where each node of the network is modeled by a locally convergent Chen-Fliess series, two basic properties of the network are esta…

math.OC2021★ 4 cited

Continuity of Formal Power Series Products in Nonlinear Control Theory

W. Steven Gray, Mathias Palmstrøm, Alexander Schmeding

Formal power series products appear in nonlinear control theory when systems modeled by Chen-Fliess series are interconnected to form new systems. In fields like adaptive control a…

eess.SY2020★ 7 cited

Generating Series for Networks of Chen-Fliess Series

W. Steven Gray, Kurusch Ebrahimi-Fard

Consider a set of single-input, single-output nonlinear systems whose input-output maps are described only in terms of convergent Chen-Fliess series without any assumption that fin…