Results 11 to 20 of about 1,017,685 (293)

General Inertia and Circle Criterion [PDF]

open access: yesPAMM, 2006
AbstractIn this paper we extend the well known Kalman‐Yacubovic‐Popov (KYP) lemma to the case of matrices with general regular inertia. We show that the version of the lemma that was derived for the case of pairs of stable matrices whose rank difference is one, extends to the more general case of matrices with regular inertia and in companion form.
Solmaz, Selim   +2 more
core   +5 more sources

A unifying framework for the circle criterion and other quadratic stability criteria [PDF]

open access: yes2003 European Control Conference (ECC), 2003
We present a result on the existence of a common quadratic Lyapunov function for a pair of linear timeinvariant systems. We show that this result characterises, generalises, and provides new perspectives on several well-known stability results. In particular, new time-domain formulations of the Circle Criterion and Meyer's extension of the KYP lemma ...
Shorten, Robert N.   +3 more
core   +5 more sources

Circle criterion observer for a compression system [PDF]

open access: yes2007 American Control Conference, 2007
Observers for a compression system using turbo compressors are derived for a model that captures the phenomena of surge. Both a full order observer for pressure, mass flow and impeller speed and a reduced order observer for mass flow are presented. The observers assume measurements of pressures and impeller speed. Results are validated by simulations.
Bjørnar Bøhagen, Jan Tommy Gravdahl
openaire   +2 more sources

Sufficient Conditions for Dynamical Output Feedback Stabilization Via the Circle Criterion [PDF]

open access: yes, 2003
This paper suggests sufficient conditions for asymptotically stable dynamical output feedback controller design based on the circle criterion. It is shown that a dynamic output feedback stabilization problem with impending problems of finite escape time,
Johansson, Rolf   +8 more
core   +2 more sources

Nanodevices Tend to Be Round

open access: yesMicromachines, 2021
Under several circumstances, a nanowire transistor with a square cross-section behaves as a circular. Taking the Gate-All-Around junctionless transistor as a primary example, we investigate the transition of the conductive region from square to circle ...
Georges Pananakakis   +2 more
doaj   +1 more source

Detailed Algorithm for Implementing Circle Criterion in QFT Framework for Saturation Nonlinearity [PDF]

open access: yesفصلنامه علوم و فناوری فضایی
The control of a spacecraft’s orbit and attitude is one of the most complicated problems in the field of control engineering. In practice, engineers encounter uncertainty and nonlinearity due to large flexible appendages and saturated actuators.
Hamed Kashani
doaj   +1 more source

Formulation of Anisotropic Strength Criterion for Geotechnical Materials

open access: yesAdvances in Civil Engineering, 2020
A new nonlinear unified strength (NUS) criterion is obtained based on the spatially mobilized plane (SMP) criterion and Mises criterion. New criterion is a series of smooth curves between SMP curved triangle and Mises circle in the π plane and thereby ...
Liping Chen   +5 more
doaj   +1 more source

New Stability Criteria for Discrete Linear Systems Based on Orthogonal Polynomials

open access: yesMathematics, 2020
A new criterion for Schur stability is derived by using basic results of the theory of orthogonal polynomials. In particular, we use the relation between orthogonal polynomials on the real line and on the unit circle known as the Szegő transformation ...
Luis E. Garza   +2 more
doaj   +1 more source

Circle and Popov Criterion for Output Feedback Stabilization of Uncertain Systems

open access: yesNonlinear Analysis, 2006
In this paper, we address the problem of output feedback stabilization for a class of uncertain dynamical systems. An asymptotically stabilizing controller is proposed under the assumption that the nominal system is absolutely stable.
A. Benabdallah, M. A. Hammami
doaj   +1 more source

The Stability Analysis for a 2 × 2 Conservation Law with PI Controller and PDP Controller

open access: yesJournal of Mathematics, 2023
This article is concerned with the stability analysis of a 2×2 conservation law with PI and PDP boundary feedback control. In the PI controller case, the authors establish a sufficient and necessary stability condition for feedback parameters by Walton ...
Dong-Xia Zhao, Fang-Xia Bao
doaj   +1 more source

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