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In this paper, based on the classic Chua's circuit, a charge-controlledmemristor is introduced to design a novel four-dimensional chaotic system. Thecomplex dynamics of the novel chaotic system such as equilibrium points,stability, dissipation, bifurcation diagrams, Lyapunov exponent spectra andphase portraits are investigated. By varying the initial conditions of thesystem, it is found from numerical simulations that the system shows somedynamics of great interests including double-wings chaotic attractors,coexisting periodic-chaotic bubbles, asymmetric and symmetric coexistingattrators. The results show that the novel circuit system has extrememultistablity.

Symmetric coexisting attractors in a novel memristors-based Chua's chaotic system