Results 21 to 30 of about 111,882 (144)

Pole Assignment for Active Vibration Control of Linear Vibrating Systems through Linear Matrix Inequalities

open access: yesApplied Sciences, 2020
This paper proposes a novel method for pole placement in linear vibrating systems through state feedback and rank-one control. Rather than assigning all the poles to the desired locations of the complex plane, the proposed method exactly assigns just the
Roberto Belotti   +3 more
doaj   +1 more source

Equivalence of the Local Markov Inequality and a Kolmogorov Type Inequality in the Complex Plane [PDF]

open access: yesPotential Analysis, 2012
Let \(m,\kappa\geq 1.\) A compact set \(E\subset\mathbb{C}\) is said to admit the local Markov property \(\mathrm{LMP}(m,\kappa)\) if, for all \( n\in\mathbb{N}\), \(z_0\in E\), \(r\in (0,1]\), the holomorphic polynomials \(P\) of degree at most \(n\) and \(j\in \mathbb{N}\) satisfy \[ |P^{(j)}(z_0)|\leq\left(\frac{c_1n^{\kappa}}{r^m}\right)^j\| P\|_{E\
Białas-Cież, Leokadia   +1 more
openaire   +3 more sources

Structured controller design for closed‐loop D‐stability in convex/non‐convex regions: Mixed integer‐linear programming approach

open access: yesIET Control Theory & Applications, 2021
Here it is assumed that the characteristic function of a linear control system, which is in the form of a polynomial and its coefficients are desired affine functions of unknown parameters of controller, is given.
Farshad Merrikh‐Bayat
doaj   +1 more source

Implementations of Full State Feedback Robust Control Designs for Mechanical Systems Using Only Positions or Velocities Output Feedback

open access: yesIEEE Access, 2022
This paper proposes a new design and practical implementation of a robust ${\mathcal H}_{\infty }$ control applied to some mechanical systems considering in the controller design full access to the state variables and in the equivalent controller ...
Lucas M. Esteves   +6 more
doaj   +1 more source

Some differential inequalities in the complex plane

open access: yesFilomat, 2017
In the present paper, we obtain some new results by applying well-known Jack?s lemma. Moreover, the second-order differential subordinations associated with convex functions are also considered.
Nunokawa, Mamoru   +4 more
openaire   +3 more sources

Tlacoqualli in Monequi "The Center Good"

open access: yesVoices in Bioethics, 2022
Photo by Andrew James on Unsplash INTRODUCTION Since its inception, bioethics has focused on Western conceptions of ethics and science. This has provided a strong foundation to build bioethics as a field and discipline.
Ried Mackay
doaj   +1 more source

MATHEMATICAL MODEL OF RESONATOR CHAINS IN EXTERNAL MAGNETIC FIELD [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2018
Subject of Research.The paper considers a spectral problem for chains of weakly coupled ball-shaped resonators under the action of an external magnetic field. Two basic geometries are studied composed of identical resonators: the chain with a single kink
A. S. Melikhova
doaj   +1 more source

Eigenvalue bounds of the shift-splitting preconditioned singular nonsymmetric saddle-point matrices

open access: yesJournal of Inequalities and Applications, 2016
For singular nonsymmetric saddle-point problems, a shift-splitting preconditioner was studied in (Appl. Math. Comput. 269:947-955, 2015). To further show the efficiency of the shift-splitting preconditioner, we provide eigenvalue bounds for the nonzero ...
Quan Shi, Qin-Qin Shen, Lin-Quan Yao
doaj   +1 more source

Certain nth Order Differential Inequalities in the Complex Plane [PDF]

open access: yesCanadian Mathematical Bulletin, 1978
AbstractLet w(z) be regular in the unit disc U:|z|<l, with w(0) = 0 and let h(r, s, t) be a complex function defined in a domain D of C3. The author determines conditions on h such that ifz∈U, then |w(z)|< 1 for z ∈ U and n= 0, 1, 2, …. Here Dnw(z) = (z/(l-z)n+1*w(z), where * stands for the Hadamard product (convolution). Some applications of the
openaire   +1 more source

Applications of Inequalities in the Complex Plane Associated with Confluent Hypergeometric Function [PDF]

open access: yesSymmetry, 2021
The idea of inequality has been extended from the real plane to the complex plane through the notion of subordination introduced by Professors Miller and Mocanu in two papers published in 1978 and 1981. With this notion came a whole new theory called the theory of differential subordination or admissible functions theory.
openaire   +1 more source

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