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Complete stability region of PD controllers for TCP/AQM networks
(2016)
"This paper addresses the stabilization problem of delay models of Transmission Control Protocol/Active Queue Management (TCP/AQM) by using a Proportional- Derivative (PD) controller as AQM strategy. The complete set of ...
A note on stability of functional difference equations
(2016-05)
"In this note, we consider perturbed linear functional difference equations with discrete and distributed delays which play a fundamental role in several stability and stabilizability problems of time-delay systems. Linear ...
Computing the Conway polynomial of several closures of oriented 3-braids
(2012-03)
"This paper deals with polynomial invariants of a class of oriented 3-string tangles and the knots (or links) obtained by applying six different closures. In Cabrera-Ibarra (2004) [1], expressions were given to compute the ...
On friction effects as a mechanism to induce complex dynamical behavior in earthquakes
(2012)
"In this paper we analyze a nonlinear dynamical system that describes the kinetic mechanism between tectonic plates on the crust´s earth undergoing stick slip movement. The analysis includes friction effects and an empirical ...
Comparing performance on chaos control via adaptive output-feedback
(2006)
"Performance of four controllers is experimentally compared and evaluated in context of chaos suppression. Four output-feedback controllers are used in experi- ments for comparison. First three schemes utilize an adaptive ...
Unveiling uncertain forces in second-order driven oscillators via internal model: a discrete-time feedback
(Hindawi, 2000-02)
"Unveil uncertain forces acting into (or onto) systems is a very interesting and old problem. Indeed, a lot effort has been devoted to develop procedures which results in the understanding of the uncertain forces and its ...
Make a PI controller on an 8-bit micro
(2006-01)
"This article shows you how to implement a classical PI (proportional-integral) controller on a simple 8-bit microcontroller. To implement the PI controller, we developed specific libraries that make it possible for the ...
Feedback induction of limit cycle in a bioreactor: controlling towards scale-down
(2004)
"The feedback stabilization of periodic orbits (induction of limit cycle) via PI-like control is proposed as plausible tool for scale-down studies. An isothermal continuous stirred tank bioreactor (CSTB), with nonideal ...
Estructura-evolución de un modelo de sistema dinámico de terremotos: análisis de correlaciones ocultas de largo alcance
(2015)
"Este trabajo se apoya en el análisis-comparación de las series de tiempo generadas por un modelo dinámico de terremotos el cual se presenta como un sistema no lineal de tercer orden que acopla leyes de fricción y ...
An upper limit for slow-earthquake zones: self-oscillatory behavior through the Hopf bifurcation mechanism from a spring-block model under lubricated surfaces
(2017)
"The complex oscillatory behavior of a spring-block model is analyzed via the Hopf bifurcation mechanism. The mathematical spring-block model includes Dieterich Ruina's friction law and Stribeck's effect. The existence of ...