scholarly journals A physical memristor based Muthuswamy–Chua–Ginoux system

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jean-Marc Ginoux ◽  
Bharathwaj Muthuswamy ◽  
Riccardo Meucci ◽  
Stefano Euzzor ◽  
Angelo Di Garbo ◽  
...  
Keyword(s):  
Dynamical System ◽  
Chaotic System ◽  
Mathematical Analysis ◽  
Three Dimensional ◽  
Memristive Device ◽  
Nonlinear Resistor ◽  
Numerical Investigations ◽  
Double Spiral ◽  
Torus Breakdown ◽  
Autonomous Dynamical System

Abstract In 1976, Leon Chua showed that a thermistor can be modeled as a memristive device. Starting from this statement we designed a circuit that has four circuit elements: a linear passive inductor, a linear passive capacitor, a nonlinear resistor and a thermistor, that is, a nonlinear “locally active” memristor. Thus, the purpose of this work was to use a physical memristor, the thermistor, in a Muthuswamy–Chua chaotic system (circuit) instead of memristor emulators. Such circuit has been modeled by a new three-dimensional autonomous dynamical system exhibiting very particular properties such as the transition from torus breakdown to chaos. Then, mathematical analysis and detailed numerical investigations have enabled to establish that such a transition corresponds to the so-called route to Shilnikov spiral chaos but gives rise to a “double spiral attractor”.

A 3D Autonomous System with Infinitely Many Chaotic Attractors

2019 ◽  
Vol 29 (12) ◽  
pp. 1950166 ◽  
Author(s):  
Ting Yang ◽  
Qigui Yang
Keyword(s):  
Dynamical System ◽  
Differential Equations ◽  
Autonomous System ◽  
Three Dimensional ◽  
Chaotic Attractors ◽  
Double Zero ◽  
Finite Dimensional ◽  
Periodic Attractors ◽  
The Stability ◽  
Autonomous Dynamical System

Intuitively, a finite-dimensional autonomous system of ordinary differential equations can only generate finitely many chaotic attractors. Amazingly, however, this paper finds a three-dimensional autonomous dynamical system that can generate infinitely many chaotic attractors. Specifically, this system can generate infinitely many coexisting chaotic attractors and infinitely many coexisting periodic attractors in the following three cases: (i) no equilibria, (ii) only infinitely many nonhyperbolic double-zero equilibria, and (iii) both infinitely many hyperbolic saddles and nonhyperbolic pure-imaginary equilibria. By analyzing the stability of double-zero and pure-imaginary equilibria, it is shown that the classic Shil’nikov criteria fail in verifying the existence of chaos in the above three cases.

A Four-Leaf Chaotic Attractor of a Three-Dimensional Dynamical System

2015 ◽  
Vol 25 (02) ◽  
pp. 1530003 ◽  
Author(s):  
Tomoyuki Miyaji ◽  
Hisashi Okamoto ◽  
Alex D. D. Craik
Keyword(s):  
Dynamical System ◽  
Three Dimensional ◽  
Period Doubling ◽  
Numerical Verification ◽  
Unstable Periodic Orbits ◽  
Verification Method ◽  
Stable Periodic ◽  
Approach Infinity ◽  
Dimensional Dynamical System ◽  
Autonomous Dynamical System

A three-dimensional autonomous dynamical system proposed by Pehlivan is untypical in simultaneously possessing both unbounded and chaotic solutions. Here, this topic is studied in some depth, both numerically and analytically. We find, by standard methods, that four-leaf chaotic orbits result from a period-doubling cascade; we identify unstable fixed points and both stable and unstable periodic orbits; and we examine how initial data determines whether orbits approach infinity or a stable periodic orbit. Further, we describe and apply a strict numerical verification method that rigorously proves the existence of sequences of period doublings.

scholarly journals Analysis, Stabilization, and DSP-Based Implementation of a Chaotic System with Nonhyperbolic Equilibrium

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Xuan-Bing Yang ◽  
Yi-Gang He ◽  
Chun-Lai Li ◽  
Chang-Qing Liu
Keyword(s):  
Dynamical System ◽  
Phase Space ◽  
Equilibrium Point ◽  
Chaotic System ◽  
Poincaré Map ◽  
Topological Horseshoe ◽  
Control Scheme ◽  
Theoretical Analyses ◽  
Zero Equilibrium ◽  
Autonomous Dynamical System

This paper reports an autonomous dynamical system, and it finds that one nonhyperbolic zero equilibrium and two hyperbolic nonzero equilibria coexist in this system. Thus, it is difficult to demonstrate the existence of chaos by Šil’nikov theorem. Consequently, the topological horseshoe theory is adopted to rigorously prove the chaotic behaviors of the system in the phase space of Poincaré map. Then, a single control scheme is designed to stabilize the dynamical system to its zero-equilibrium point. Besides, to verify the theoretical analyses physically, the attractor and stabilization scheme are further realized via DSP-based technique.

Torus Breakdown and Homoclinic Chaos in a Glow Discharge Tube

2017 ◽  
Vol 27 (14) ◽  
pp. 1750220 ◽  
Author(s):  
Jean-Marc Ginoux ◽  
Riccardo Meucci ◽  
Stefano Euzzor
Keyword(s):  
Discharge Tube ◽  
Voltage Characteristic ◽  
Current Voltage Characteristic ◽  
Van Der Pol ◽  
Numerical Investigations ◽  
Homoclinic Chaos ◽  
Current Voltage ◽  
Torus Breakdown ◽  
Cubic Function ◽  
Autonomous Dynamical System

Starting from historical researches, we used, like Van der Pol and Le Corbeiller, a cubic function for modeling the current–voltage characteristic of a direct current low-pressure plasma discharge tube, i.e. a neon tube. This led us to propose a new four-dimensional autonomous dynamical system allowing to describe the experimentally observed phenomenon. Then, mathematical analysis and detailed numerical investigations of such a fourth-order torus circuit enabled to highlight bifurcation routes from torus breakdown to homoclinic chaos following the Newhouse–Ruelle–Takens scenario.

DYNAMICS OF A SIMPLE ENDOGENOUS GROWTH MODEL WITH FINANCIAL INTERMEDIATION

2019 ◽  
pp. 1-15
Author(s):  
Dominika Byrska ◽  
Adam Krawiec ◽  
Marek Szydłowski
Keyword(s):  
Dynamical System ◽  
Economic Growth ◽  
Invariant Manifolds ◽  
Financial Intermediation ◽  
Three Dimensional ◽  
Mathematical Methods ◽  
Endogenous Growth Model ◽  
Dimensional Dynamical System ◽  
Insight Into ◽  
Autonomous Dynamical System

We study an impact of the financial intermediation on economic growth. We assume the simple model of the economic growth in the form of an autonomous dynamical system with a financial sector represented by banks and real sector represented by households and firms. We assume that financial intermediation services are described by financial intermediation technology which is a function depending on the share of labor employed by banks. Investments realized by firms depend not only on savings accumulated by banks but also on financial intermediation technology. We obtain a three-dimensional dynamical system and analyze the existence of a saddle equilibrium in the growth process associated with financial intermediation. Using mathematical methods of dynamical systems, we analyze growth paths, and we study the stationary states of the system and their stability. We found that equilibrium is reached only by trajectories located on two submanifolds. The resulting analysis provides an insight into the saddle solution with a stable incoming separatrix lying on one of the invariant manifolds.

scholarly journals Torus Breakdown in a Uni Junction Memristor

2018 ◽  
Vol 28 (10) ◽  
pp. 1850128 ◽  
Author(s):  
Jean-Marc Ginoux ◽  
Riccardo Meucci ◽  
Stefano Euzzor ◽  
Angelo di Garbo
Keyword(s):  
Dynamical System ◽  
Voltage Characteristic ◽  
The Other ◽  
Current Voltage Characteristic ◽  
Current Voltage ◽  
Junction Transistor ◽  
Torus Breakdown ◽  
The One ◽  
Dc Current ◽  
Autonomous Dynamical System

Experimental study of a uni junction transistor (UJT) has enabled to show that this electronic component has the same features as the so-called “memristor”. So, we have used the memristor’s direct current (DC) [Formula: see text]–[Formula: see text] characteristic for modeling the UJT’s DC current–voltage characteristic. This has led us to confirm on the one hand, that the UJT is a memristor and, on the other hand, to propose a new four-dimensional autonomous dynamical system allowing to describe experimentally observed phenomena such as the transition from a limit cycle to torus breakdown.

A Chaotic System with Different Families of Hidden Attractors

2016 ◽  
Vol 26 (08) ◽  
pp. 1650139 ◽  
Author(s):  
Viet-Thanh Pham ◽  
Christos Volos ◽  
Sajad Jafari ◽  
Sundarapandian Vaidyanathan ◽  
Tomasz Kapitaniak ◽  
...  
Keyword(s):  
Dynamical Systems ◽  
Numerical Simulations ◽  
Chaotic System ◽  
Infinite Number ◽  
Mathematical Analysis ◽  
Equilibrium Points ◽  
Three Dimensional ◽  
Circuit Implementation ◽  
Hidden Attractors ◽  
Dynamical Behaviors

The presence of hidden attractors in dynamical systems has received considerable attention recently both in theory and applications. A novel three-dimensional autonomous chaotic system with hidden attractors is introduced in this paper. It is exciting that this chaotic system can exhibit two different families of hidden attractors: hidden attractors with an infinite number of equilibrium points and hidden attractors without equilibrium. Dynamical behaviors of such system are discovered through mathematical analysis, numerical simulations and circuit implementation.

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