期刊
ARCHIVES OF CONTROL SCIENCES
卷 26, 期 3, 页码 311-338出版社
POLSKA AKAD NAUK, POLISH ACAD SCIENCES
DOI: 10.1515/acsc-2016-0018
关键词
hyperchaos; hyperjerk system; adaptive control; backstepping control; synchronization
A hyperjerk system is a dynamical system, which is modelled by an nth order ordinary differential equation with n >= 4 describing the time evolution of a single scalar variable. Equivalently, using a chain of integrators, a hyperjerk system can be modelled as a system of n first order ordinary differential equations with n >= 4. In this research work, a 4-D novel hyperchaotic hyperjerk system with two nonlinearities has been proposed, and its qualitative properties have been detailed. The novel hyperjerk system has a unique equilibrium at the origin, which is a saddle-focus and unstable. The Lyapunov exponents of the novel hyperjerk system are obtained as L-1 = 0.14219, L-2 = 0.04605, L-3 = 0 and L-4 = -1.39267. The Kaplan-Yorke dimension of the novel hyperjerk system is obtained as D-KY = 3.1348. Next, an adaptive controller is designed via backstepping control method to stabilize the novel hyperjerk chaotic system with three unknown parameters. Moreover, an adaptive controller is designed via backstepping control method to achieve global synchronization of the identical novel hyperjerk systems with three unknown parameters. MATLAB simulations are shown to illustrate all the main results derived in this research work on a novel hyperjerk system.
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