Preservation of Synchronization Using a Tracy‐Singh Product in the Transformation on Their Linear Matrix (original) (raw)

Preservation of hyperbolic equilibrium points and synchronization in dynamical systems

2008 5th International Conference on Electrical Engineering, Computing Science and Automatic Control, 2008

Classic results of the dynamical systems theory are extended and used to study the preservation of synchronization in chaotical dynamical systems. This results show that synchronization can be preserved after changes are made to the linear part of the dynamical system. When the jacobian matrix of the system is evaluated in the hyperbolic points, the structure of the signs of the eigenvalues of this matrix determine if the system is stable or unstable. In this work, we establish the sufficient conditions to preserve the structure of this hyperbolic points. Also, control tools are used to achieve synchronization in dynamical systems. Numerical simulations to very the effectiveness of the method are presented.

Preserving synchronization using nonlinear modifications in the Jacobian matrix

Communications in Nonlinear Science and Numerical Simulation, 2011

In this paper our aim is to show the viability of preserving the hyperbolicity of a master/ salve pair of chaotic systems under different types of nonlinear modifications to its Jacobian matrix. Furthermore, we shall provide evidence to show that linear control methods used to achieve synchronization between master and slave systems are preserved under such transformations. We propose to modify both the coefficients of the Jacobian matrix's associated characteristic polynomial through power evaluation as well as through matrix polynomial evaluation. To illustrate the results we present examples of several well known chaotic and hyperchaotic dynamical systems that have been modified using both methodologies.

Preservation of Synchronization in Dynamical Systems via Lyapunov Methods

WSEAS Transactions on Circuits and Systems

In this paper, we use, extend and apply some classic results of the theory of dynamical systems to study the preservation of synchronization in chaotical dynamical systems via Lyapunov method. The obtained results show that synchronization can be preserved after a particular class of changes are made to the linear part of the dynamical system. For illustrative purposes we apply a compound control law to achieve synchronization in a master-slave system. We also show that it is possible to preserve partial synchronization when an additive perturbation is included in the control law. We present numerical simulations to show the effectiveness of our method.

General stability analysis of synchronized dynamics in coupled systems

Physical Review E, 2003

We consider the stability of synchronized states ͑including equilibrium point, periodic orbit, or chaotic attractor͒ in arbitrarily coupled dynamical systems ͑maps or ordinary differential equations͒. We develop a general approach, based on the master stability function and Gershgörin disk theory, to yield constraints on the coupling strengths to ensure the stability of synchronized dynamics. Systems with specific coupling schemes are used as examples to illustrate our general method.

Dynamic Analysis and Synchronization for a Generalized Class of Nonlinear Systems

3rd IFAC Conference on Analysis and Control of Chaotic Systems (2012), 2012

This paper presents a generalized differential equation structure which gives rise to new nonlinear, chaotic systems and also encompasses many well known systems, i.e. Lorenz, Chen, Lü, Rössler, Sprott and others. Throughout the paper we shall analyze several properties from a few of the systems derived from this general structure. Some of the systems described in the article, to the extent of the authors knowledge, have not been published. The analytical and numerical results derived from these analysis have shown evidence of chaotic behavior. We will also address the possibility of quasi-simultaneous synchronization for some members of this class of chaotic systems.

Synchronization of chaotic systems: Transverse stability of trajectories in invariant manifolds

Chaos: An Interdisciplinary Journal of Nonlinear Science, 1997

We examine synchronization of identical chaotic systems coupled in a drive/response manner. A rigorous criterion is presented which, if satisfied, guarantees that synchronization to the driving trajectory is linearly stable to perturbations. An easy to use approximate criterion for estimating linear stability is also presented. One major advantage of these criteria is that, for simple systems, many of the calculations needed to implement them can be performed analytically. Geometrical interpretations of the criterion are discussed, as well as how they may be used to investigate synchronization between mutual coupled systems and the stability of invariant manifolds within a dynamical system. Finally, the relationship between our criterion and results from control theory are discussed. Analytical and numerical results from tests of these criteria on four different dynamical systems are presented.

Recent Advances in Nonlinear Dynamics and Synchronization

Studies in Computational Intelligence, 2009

The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.

Complete Synchronization, Anti-synchronization and Hybrid Synchronization Between Two Different 4D Nonlinear Dynamical Systems

2016

Three important phenomena of chaos synchronization are considered in this paper, In detailed, complete synchronization, anti- synchronization and hybrid synchronization based on the nonlinear active control approach between two different (non-identical) 4D hyperchaotic systems, i. e. Modified Pan and Liu are study herein. The Modified hyperchaotic Pan system is taken as drive system and hyperchaotic Liu system as response. Stabilization of error dynamics for each phenomenon is realized by satisfying two analytical approaches; Lyapunov's second method and linear system theory. Controllers are designed by using the relevant variable of drive and response systems. Theoretical analysis and numerical simulations are shown to verify the results.

From synchronization to Lyapunov exponents and back

Physica D: Nonlinear Phenomena, 2006

The goal of this paper is twofold. In the first part we discuss a general approach to determine Lyapunov exponents from ensemble rather than time averages. The approach passes through the identification of locally stable and unstable manifolds (the Lyapunov vectors), thereby revealing an analogy with generalized synchronization. The method is then applied to a periodically forced chaotic oscillator to show that the modulus of the Lyapunov exponent associated to the phase dynamics increases quadratically with the coupling strength and it is therefore different from zero already below the onset of phase synchronization. The analytical calculations are carried out for a model, the generalized special flow, that we construct as a simplified version of the periodically forced Rössler oscillator.