期刊
NONLINEAR DYNAMICS
卷 104, 期 4, 页码 4601-4614出版社
SPRINGER
DOI: 10.1007/s11071-021-06544-7
关键词
Discrete memristor; Hyperchaos; Nonparametric bifurcation
资金
- National Natural Science Foundation of China [61801271, 61973200, 91848206, 61771176]
- Natural Science Foundation of Shandong Province [ZR2019BF007]
- Qingdao Science and Technology Plan Project [19-6-2-9-cg]
- Taishan Scholar Project of Shandong Province of China
A new n-dimensional generalized DM model is proposed in this paper based on discrete theory, along with two 2-D discrete mathematical models that satisfy the three characteristics of memristors. By applying the mathematical model to the Sine map, a new hyperchaotic map called DM-S is obtained. The dynamical behaviors of DM-S including nonparametric bifurcation and hyperchaos are explored through phase diagrams, bifurcation diagrams, and Lyapunov exponent spectrums.
Compared with continuous-time memristor (CM), discrete memristor (DM) has not been received adequate attention. In this paper, a new n-dimensional generalized DM model is proposed based on the discrete theory. Two 2-D discrete mathematical models satisfying the three fingerprints characteristics of memristors are designed. Applying the mathematical model into the Sine map yields a new hyperchaotic map called discrete memristor-based Sine (DM-S) map. The DM-S map has a line of fixed points, and its dynamical behaviors including nonparametric bifurcation and hyperchaos are explored by phase diagrams, bifurcation diagrams, and Lyapunov exponent spectrums. The i-v characteristics of the DM and the attractors of the DM-S map are implemented by digital signal processor. In addition, the sequences of map are tested by using SP800-22 NIST software.
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