Abstract

Due to the existence of time-varying chaotic disturbances in complex applications, the chaotic synchronization of sensor systems becomes a tough issue in industry electronics fields. To accelerate the synchronization process of chaotic sensor systems, this paper proposes a super-exponential-zeroing neurodynamic (SEZN) approach and its associated controller. Unlike the conventional zeroing neurodynamic (CZN) approach with exponential convergence property, the controller designed by the proposed SEZN approach inherently possesses the advantage of super-exponential convergence property, which makes the synchronization process faster and more accurate. Theoretical analyses on the stability and convergence advantages in terms of both faster convergence speed and lower error bound within the task duration are rigorously presented. Moreover, three synchronization examples substantiate the validity of the SEZN approach and the related controller for synchronization of chaotic sensor systems. Comparisons with other approaches such as the CZN approach, show the convergence superiority of the proposed SEZN approach. Finally, extensive tests further investigate the impact on convergence performance by choosing different values of design parameter and initial state.

Highlights

  • In 1963, Edward Lorenz [1] started to introduce and report the research on chaotic attractor.Since this inspiring work, extensive research on the chaos handle and synchronization of sensors has been investigated and developed for industrial electronics [2,3,4,5,6]

  • Being superior to the above-mentioned works on the basis of the conventional zeroing neurodynamic (CZN) approach, this paper introduces and develops a novel super-exponential-zeroing neurodynamic (SEZN) approach and its associated controller

  • To the best of the authors’ knowledge, the SEZN approach as well as its associated controller with the outstanding super-exponential convergence property for the chaotic synchronization of sensor systems have not been investigated in the existing research

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Summary

Introduction

In 1963, Edward Lorenz [1] started to introduce and report the research on chaotic attractor. By utilizing the information of the time derivative, extensive works for different real-time engineering problems as well as control and synchronization of chaotic sensor systems were developed by leveraging the CZN approach. To the best of the authors’ knowledge, the SEZN approach as well as its associated controller with the outstanding super-exponential convergence property for the chaotic synchronization of sensor systems have not been investigated in the existing research. The controller designed by the proposed SEZN approach distinctively and inherently possesses the advantage of super-exponential convergence, which makes the synchronization process faster and more accurate It is a breakthrough in the convergence research of the neurodynamic approach and real-time chaotic synchronization of sensor systems. Simulation studies including three synchronization examples, comparisons with other methods as well as extensive tests all verify the effectiveness as well as superiority of the SEZN approach and the related controller in practice

Preliminaries and Neurodynamic Approaches
Synchronization of Chaotic Systems
Neurodynamic Approaches
Theoretical Analyses
Synchronization Examples
Synchronization of Two Identical Lu Chaotic Systems
Synchronization of Two Identical Autonomous Chaotic Systems
Synchronization of Two Nonidentical Chaotic Systems
Comparisons with Other Approaches
Extensive Tests
Conclusions and Future Work

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