Journal of Applied Science and Engineering

Published by Tamkang University Press


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Behnam Babaei1 and Masoud Shafiee This email address is being protected from spambots. You need JavaScript enabled to view it.1

1Department of Electrical Engineering, Amirkabir University of Technology, Iran


Received: January 26, 2018
Accepted: October 2, 2018
Publication Date: March 1, 2019

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Chaos is a complicated phenomenon in nonlinear dynamical systems. A dynamic controller, based on the stability transformation method (STM), has been used to stabilize both multiple fixed points and unknown unstable periodic orbits (UPOs) in dynamical systems. However, in these methods, there is not any unified algorithm in order to stabilize the fixed points. Here, we present a universal and simple chaos control algorithm called method of selecting an unstable fixed point (SUFP), which is able to stabilize unstable selected fixed points, by generating a stability matrix. Although this algorithm modifies a system by applying an input feedback, the designed feedback does not relocate the positions of fixed points but changes their stabilities. Results show that all tested chaotic trajectories are attracted to selected points, independent of initial values.

Keywords: Stability Matrix, Chaotic System, Fixed Point, Selecting Unstable Fixed Point, SUFP, Eigenvalue, Algorithm, Lorenz Model


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