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Browsing by Subject "Stability analysis"

Now showing items 1-15 of 15

A delay-dependent dual-rate PID controller over an ethernet network

Cuenca Lacruz, Ángel Miguel; Salt Llobregat, Julián José; Sala Piqueras, Antonio; Pizá Fernández, Ricardo (Institute of Electrical and Electronics Engineers (IEEE), 2011-02)

n this paper, a methodology to design controllers able to cope with different load conditions on an Ethernet network is introduced. Load conditions induce time-varying delays between measurements and control. To face these ...
A generalised integral polynomial Lyapunov function for nonlinear systems

Gonzalez-German, Ivan Temoatzin; Sala, Antonio; Bernal Reza, Miguel Ángel (Elsevier, 2019-02-01)

[EN] This work generalises the line-integral Lyapunov function in (Rhee and Won, 2006) for stability analysis of continuous-time nonlinear models expressed as fuzzy systems. The referred result applied only to Takagi¿Sugeno ...
Análisis y diseño de sistemas lineales con parámetros variantes utilizando LMIs

Rotondo, Damiano; Sánchez, Helem S.; Nejjari, Fatiha; Puig, Vicenç (Universitat Politècnica de València, 2018-12-13)

[EN] This paper presents a tutorial on analysis and design of linear parameter varying (LPV) systems using linear matrix inequalities (LMIs). Several specifications, such as D-stability, guaranteed H∞ performance and ...
Contribuciones al estudio de sistemas lineales con retardos: el enfoque de funcionales de tipo completo

Mondié, Sabine; Gomez, Marco-Antonio (Universitat Politècnica de València, 2022-09-30)

[EN] Recent results on Lyapunov-Krasovskii functionals of complete type for linear time-delay systems are presented. The main concepts and results are introduced for the single delay system case, and necessary and sufficient ...
Estabilidad de Sistemas No Lineales Basada en la Teoría de Liapunov

Gordillo, Francisco (Universitat Politècnica de València, 2009-04-07)

[ES] El comportamiento dinámico de los sistemas no lineales es mucho más rico que el de los lineales y su análisis mucho más complicado. Para el análisis de estabilidad, las técnicas basadas en la teoría de Liapunov tienen ...
Hierarchical Triple-Maglev Dual-Rate Control Over a Profibus-DP Network

Pizá, Ricardo; Salt Llobregat, Julián José; Sala, Antonio; Cuenca Lacruz, Ángel Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2014-01)

This paper addresses a networked control system application on an unstable triple-magnetic-levitation setup. A hierarchical dual-rate control using a Profibus-decentralized peripherals network has been used to stabilize ...
New fourth and sixth-order classes of iterative methods for solving systems of nonlinear equations and their stability analysis

Kansal, Munish; Cordero Barbero, Alicia; Bhalla, Sonia; Torregrosa Sánchez, Juan Ramón (Springer-Verlag, 2021-07)

[EN] In this paper, a two-step class of fourth-order iterative methods for solving systems of nonlinear equations is presented. We further extend the two-step class to establish a new sixth-order family which requires only ...
New Iterative Schemes to Solve Nonlinear Systems with Symmetric Basins of Attraction

Cordero Barbero, Alicia; Iqbal, Smmayya; Torregrosa Sánchez, Juan Ramón; Zafar, Fiza (MDPI AG, 2022-08)

[EN] We present a new Jarratt-type family of optimal fourth- and sixth-order iterative methods for solving nonlinear equations, along with their convergence properties. The schemes are extended to nonlinear systems of ...
Piecewise-Takagi-Sugeno asymptotically exact estimation of the domain of attraction of nonlinear systems

Gonzalez-German, Ivan Temoatzin; Sala, Antonio; Bernal Reza, Miguel Ángel; Robles-Ruiz, Ruben (Elsevier, 2017-02)

[EN] This report generalises recent results on stability analysis and estimation of the domain of attraction of nonlinear systems via exact piecewise affine Takagi Sugeno models. Algorithms in the form of linear matrix ...
PS-InSAR and UAV technology used in the stability study of Ankang expansive soil airport

Si, Jinzhao; Zhang, Shuangcheng; Niu, Yufen (Editorial Universitat Politècnica de València, 2023-01-27)

[EN] Expansive soil is a natural geological body with obvious expansion and contraction, multiple fissures and other undesirable properties. The deformation monitoring of expansive soil in high-fill areas under the combined ...
Sistemas Integrados de Potencia en Buques Offshore: Control, tendencias y retos

Valera García, Juan José; Atutxa Lekue, Íñigo (Elsevier, 2016-01-10)

[EN] The offshore vessels require a high precision speed control and dynamic positioning. Adverse weather conditions and/or rough waves give rise to high disturbances that must be rejected by the control system to keep the ...
Some variants of Halley's method with memory and their applications for solving several chemical problems

Cordero Barbero, Alicia; Ramos, Higinio; Torregrosa Sánchez, Juan Ramón (Springer-Verlag, 2020-04)

[EN] In this paper, we develop some variants of the well-known Halley's iterative method to solve nonlinear equations. The resulting methods are one-step methods, with and without memory, which use different number of ...
Spontaneous activation under atrial fibrosis: A model using complex order derivatives

Ugarte, Juan P.; Tobón, Catalina; Saiz Rodríguez, Francisco Javier; Mendes Lopes, Antonio; Tenreiro Machado, José A. (Elsevier, 2021-04)

[EN] The computational modeling of the cardiac electrophysiology allows assertive and quantitative study of the atrial fibrosis under fibrillation conditions. The cardiac electrical propagation is described by the so-called ...
Stability analysis of polynomial fuzzy models via polynomial fuzzy Lyapunov functions

Bernal Reza, Miguel Ángel; Sala, Antonio; Jaadari, Abdelhafidh; Guerra, Thierry-Marie (Elsevier, 2011-12-15)

In this paper, the stability of continuous-time polynomial fuzzy models by means of a polynomial generalization of fuzzy Lyapunov functions is studied. Fuzzy Lyapunov functions have been fruitfully used in the literature ...
Stability preserving maps for finite-time convergence: super-twisting sliding-mode algorithm

Picó Marco, Jesús Andrés; Picó Marco, Enrique; Vignoni, Alejandro; De Battista, Hernán (International Federation of Automatic Control, 2013)

The super-twisting algorithm (STA) has become the prototype of second-order sliding mode algorithm. It achieves finite time convergence by means of a continuous action, without using information about derivatives of the ...