Generating Fully Bounded Chaotic Attractors

Generating Fully Bounded Chaotic Attractors

Zeraoulia Elhadj (University of Tébessa, Algeria)
Copyright: © 2011 |Pages: 7
DOI: 10.4018/jalr.2011070104

Abstract

Generating chaotic attractors from nonlinear dynamical systems is quite important because of their applicability in sciences and engineering. This paper considers a class of 2-D mappings displaying fully bounded chaotic attractors for all bifurcation parameters. It describes in detail the dynamical behavior of this map, along with some other dynamical phenomena. Also presented are some phase portraits and some dynamical properties of the given simple family of 2-D discrete mappings.
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1. Introduction

Generating chaotic attractors from nonlinear dynamical system is quite important, because of their applicability in sciences and engineering. The discreet mathematical models are gotten directly via scientific experiences, or by the use of the Poincaré section for the study of continuous-time models. This type of applications is used in secure communications using the notions of chaos (Tsonis, 1992; Andreyev, Belsky, Dmitriev, & Kuminov, 1996; Newcomb & Sathyan, 1983). Many papers have described chaotic systems, one of the most famous being a two-dimensional discrete map which models the original Hénon map jalr.2011070104.m01 studied in (Hénon, 1976; Benedicks & Carleson, 1991; Sprott, 1993; Zeraoulia & Sprott, 2008). This map has been widely studied because it is the simplest example of a dissipative map with chaotic solutions. It has a single quadratic nonlinearity and a constant area contraction over the orbit in the xy-plane. However, the Hénon map is unbounded for the almost values of its bifurcation parameters. Thus, constructing a fully bounded chaotic map is a very important result. In the literature, there is some cases where the boundedness of a map was proved rigorously in some regions of the bifurcation parameters space, for example in (Zeraoulia & Sprott, 2008) it was proved that the two-dimensional, jalr.2011070104.m02 discrete mapping given by jalr.2011070104.m03 is bounded for all jalr.2011070104.m04 and unbounded for all and jalr.2011070104.m05. This map is capable to generating “multi- fold” strange attractors via period-doubling bifurcation routes to chaos. This partial boundedness of the above map is due to the presence of the terms jalr.2011070104.m06 and jalr.2011070104.m07 To avoid this problem, we will consider maps of the form jalr.2011070104.m08 where jalr.2011070104.m09 is the vector of bifurcation parameters space andjalr.2011070104.m10 is the vector of the state space. The simplest form of this map is obtained when the functions f and g are linear and the resulting map displays chaotic attractors.

In this paper we present some phase portrait and some dynamical properties of the following simple family of 2-D discrete mappings:

jalr.2011070104.m11
(1) wherejalr.2011070104.m12 makes a part of the bifurcation parameters space and f and g are linear functions in their corresponding arguments. Equation (1) is an interesting minimal system, similar to the 2-D linear quadratic mapping but with the functions jalr.2011070104.m13 and jalr.2011070104.m14.

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