Results 21 to 30 of about 413,291 (285)

Spectral linear matrix inequalities [PDF]

open access: yesAdvances in Mathematics, 2021
We prove, under a certain representation theoretic assumption, that the set of real symmetric matrices, whose eigenvalues satisfy a linear matrix inequality, is itself a spectrahedron. The main application is that derivative relaxations of the positive semidefinite cone are spectrahedra. From this we further deduce statements on their Wronskians. These
openaire   +2 more sources

Robust Distributed H∞ Filtering for Nonlinear Systems with Sensor Saturations and Fractional Uncertainties with Digital Simulation

open access: yesDiscrete Dynamics in Nature and Society, 2015
This paper is concerned with the robust distributed H∞ filtering problem for nonlinear systems subject to sensor saturations and fractional parameter uncertainties. A sufficient condition is derived for the filtering error system to reach the required H∞
Dong Liu   +4 more
doaj   +1 more source

Flight optimisation of missile using linear matrix inequality (LMI) approach

open access: yesThe Journal of Engineering, 2019
The research entails a finite-element design of a 3d-autopilot missile synthesis of multiple objective controls by solving the inequalities encountered while using a linear matrix.
Samarpan Deb Majumder
doaj   +1 more source

Combined Enhanced LMI Charactrization and Parametric Eigenstructure Assignment Using Static Output Feedback [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2012
This paper proposes mixed eigenstructure assignment with H∞ constraint when the states are not measurable. In this case, full state feedback is not permissible. So eigenstructure assignment by output feedback is considered.
Amir Parviz Valadbeygi   +2 more
doaj  

H2 model order reduction of bilinear systems via linear matrix inequality approach

open access: yesIET Control Theory & Applications, 2023
This paper proposes an H2‐optimal model order reduction (MOR) method for bilinear systems based on the linear matrix inequality (LMI) approach. In this method, to reduce the computational complexity, at first, a reduced middle‐order approximation of the ...
Hasan Nasiri Soloklo, Nooshin Bigdeli
doaj   +1 more source

Two results on the size of spectrahedral descriptions [PDF]

open access: yes, 2015
A spectrahedron is a set defined by a linear matrix inequality. Given a spectrahedron we are interested in the question of the smallest possible size $r$ of the matrices in the description by linear matrix inequalities.
Kummer, Mario
core   +3 more sources

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

Contractors and Linear Matrix Inequalities [PDF]

open access: yesASCE-ASME Journal of Risk and Uncertainty in Engineering Systems Part B: Mechanical Engineering, 2015
Linear matrix inequalities (LMIs) comprise a large class of convex constraints. Boxes, ellipsoids, and linear constraints can be represented by LMIs. The intersection of LMIs are also classified as LMIs. Interior-point methods are able to minimize or maximize any linear criterion of LMIs with complexity, which is polynomial regarding to the number of ...
Nicola, Jeremy, Jaulin, Luc
openaire   +2 more sources

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

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

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