Results 21 to 30 of about 2,522,578 (311)

Periodic solutions of second-order nonautonomous dynamical systems

open access: yesBoundary Value Problems, 2006
We study the existence of periodic solutions for second-order nonautonomous dynamical systems. We give four sets of hypotheses which guarantee the existence of solutions.
Martin Schechter
doaj   +2 more sources

Linearized Transfer Entropy for Continuous Second Order Systems

open access: yesEntropy, 2013
The transfer entropy has proven a useful measure of coupling among components of a dynamical system. This measure effectively captures the influence of one system component on the transition probabilities (dynamics) of another.
Jonathan M. Nichols   +2 more
doaj   +1 more source

Discretization of Second-Order Variational Systems [PDF]

open access: yesProceedings of the American Mathematical Society, 1993
The existence of periodic orbits of the discretization of second-order variational systems is studied both for varying step of discretization and for a fixed small one.
openaire   +3 more sources

OPTIMAL CONTROL ALGORITHMS FOR SECOND ORDER SYSTEMS [PDF]

open access: yesJournal of Computer Science, 2013
Proportional Integral Derivative (PID) controllers are widely used in industrial processes for their s implicity and robustness. The main application problems are t he tuning of PID parameters to obtain good settling time, rise time and overshoot. The challenge is to improve the timing parameters to achieve optimal co ntrol performances.
PELUSI, DANILO, MASCELLA, RAFFAELE
openaire   +3 more sources

On Sturmian theory for second order systems [PDF]

open access: yesProceedings of the American Mathematical Society, 1983
A generalization of the Sturm Comparison Theorem is given to nonselfadjoint second order linear systems. In addition, a theorem, involving the existence of a solution with strictly positive components, is proven. Counterexamples are given to show that the theorems are false without the stated assumptions.
openaire   +1 more source

Structure Theory for Second Order 2D Superintegrable Systems with 1-Parameter Potentials

open access: yes, 2009
The structure theory for the quadratic algebra generated by first and second order constants of the motion for 2D second order superintegrable systems with nondegenerate (3-parameter) and or 2-parameter potentials is well understood, but the results for ...
Willard Miller Jr.   +7 more
core   +1 more source

Time-Varying Formation Tracking for Second Order Multi-Agent Systems: An Experimental Approach for Wheeled Robots

open access: yesMachines, 2023
In this paper, a time-varying formation tracking protocol for second-order multi-sgent systems (MASs) is presented. The time-varying formation considers translation, rotation, and scaling of the geometric pattern that defines the formation.
Neftali J. Gonzalez-Yances   +2 more
doaj   +1 more source

Models for Quadratic Algebras Associated with Second Order Superintegrable Systems in 2D

open access: yes, 2008
There are 13 equivalence classes of 2D second order quantum and classical superintegrable systems with nontrivial potential, each associated with a quadratic algebra of hidden symmetries.
Willard Miller Jr.   +5 more
core   +1 more source

Structure Theory for Extended Kepler-Coulomb 3D Classical Superintegrable Systems [PDF]

open access: yes, 2012
The classical Kepler-Coulomb system in 3 dimensions is well known to be 2nd order superintegrable, with a symmetry algebra that closes polynomially under Poisson brackets. This polynomial closure is typical for 2nd order superintegrable systems in 2D and
Willard Miller Jr.   +5 more
core   +1 more source

Online SOPDT Model Identification Method Using a Relay

open access: yesApplied Sciences, 2023
This paper describes a novel method for the online identification of an analog second-order plus dead time (SOPDT) model. It requires the measurement of four physical quantities, for which a relay is used.
Krzysztof S. Kula
doaj   +1 more source

Home - About - Disclaimer - Privacy