Results 41 to 50 of about 412,258 (327)

Robust Model Predictive Control of Networked Control Systems under Input Constraints and Packet Dropouts

open access: yesAbstract and Applied Analysis, 2014
This paper deals with the problem of robust model predictive control (RMPC) for a class of linear time-varying systems with constraints and data losses. We take the polytopic uncertainties into account to describe the uncertain systems.
Deyin Yao   +3 more
doaj   +1 more source

Finite-time reliable nonfragile control for fractionalorder nonlinear systems with asymmetrical saturation and structured uncertainties

open access: yesNonlinear Analysis, 2022
This paper investigates the finite-time stabilization problem of fractional-order nonlinear differential systems via an asymmetrically saturated reliable control in the sense of Caputo’s fractional derivative.
L. Susana Ramya   +2 more
doaj   +1 more source

Generalization of a Hadamard type inequality for permanents

open access: yes, 2019
This paper is devoted to a generalization of a Hadamard type inequality for the permanent of a complex square matrix. Our proof is based on a non-trivial extension of a technique used in Carlen, Lieb and Loss (Methods and Applications of Analysis 13 (1) (
Roos, Bero
core   +1 more source

Least-Squares Covariance Matrix Adjustment [PDF]

open access: yes, 2005
We consider the problem of finding the smallest adjustment to a given symmetric $n \times n$ matrix, as measured by the Euclidean or Frobenius norm, so that it satisfies some given linear equalities and inequalities, and in addition is positive ...
Boyd, Stephen, Xiao, Lin
core   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

A new condition for Root Clustering in PMI regions [PDF]

open access: yesRevista Română de Informatică și Automatică
This paper proposes a new condition for the root clustering of a real matrix A in a complex region D defined by a polynomial matrix inequality (PMI region). For a general case, a sufficient condition is given so that the eigenvalues of A lie in D .
Mohamed Hechmi BOUAZIZI
doaj   +1 more source

Robust stability and passivity analysis for discrete-time neural networks with mixed time-varying delays via a new summation inequality

open access: yesAIMS Mathematics, 2023
The summation inequality is essential in creating delay-dependent criteria for discrete-time systems with time-varying delays and developing other delay-dependent standards.
Jenjira Thipcha   +6 more
doaj   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García   +3 more
wiley   +1 more source

A Robust H∞ Fault Tolerant Controller for Uncertain Systems Described by Linear Fractional Transformation Model

open access: yesIEEE Access, 2021
In this article, a robust $H_{\infty }$ fault tolerant control law is addressed for a class of the uncertain dynamical systems represented via linear fractional transformation.
Valiollah Ghaffari   +4 more
doaj   +1 more source

On convexity of the frequency response of a stable polynomial

open access: yes, 2007
In the complex plane, the frequency response of a univariate polynomial is the set of values taken by the polynomial when evaluated along the imaginary axis. This is an algebraic curve partitioning the plane into several connected components.
Henrion, Didier
core   +4 more sources

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