Abstract
Exploring coexistence of multiple attractors brought by the multistability for circuits and systems has a significant meaning in the theoretical researches and practical applications for chaos. In this article, a succinct fourth order Chua’s circuit is proposed by replacing the negative resistance with an ordinary positive resistance in a traditional fourth order one. The two-dimensional stability analysis for equilibrium points shows that this circuit possesses one unstable saddle-focus point with index 1 and two stable node-focus points. Coexisting bifurcation models, multiple attractors and the corresponding attraction basins are revealed by a series of numerical simulations. The clear crisis scenario of the coexisting limit cycles of period-3 bridging the coexisting single-scroll attractors of chaos and the double-scroll one is observed by the bifurcation analyses. The dual-mode experimental verifications by the analog and digital circuits are carried out on the self-made printed circuit boards, which validate the simulated dynamical behaviors with the combination of physics and engineering.
Highlights
Chaos is an important interdisciplinary research theme in the field of mathematics, physics, and engineering [1]
THE ANALYSIS OF MULTI-STABLE DYNAMICS coexisting bifurcation models, multiple attractors and the corresponding attraction basins are revealed by a series of numerical computation
COEXISTING BIFURCATION MODELS AND MULTIPLE ATTRACTORS According to the results in Section II, the dynamical behaviors to the new fourth order circuit are obviously sensitive about initial values
Summary
Chaos is an important interdisciplinary research theme in the field of mathematics, physics, and engineering [1]. Pan: Coexisting Multiple Attractors in Fourth Order Chua’s Circuit With Experimental Verifications it is meaningful for chaotic circuit to simplify the physical implementation [30]. The features of stable equilibrium points and multiple attractors are discovered in this new circuit, enriching our awareness to fourth order Chua’s circuit.
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