Circuit Implementation, Synchronization of Multistability, and Image Encryption of a Four-Wing Memristive Chaotic System
| Autor: | Guangya Peng, Wang Enrong, Fuhong Min |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Computer engineering. Computer hardware
General Computer Science Article Subject Computer science Chaotic 02 engineering and technology Lyapunov exponent Topology Encryption 01 natural sciences TK7885-7895 symbols.namesake Computer Science::Emerging Technologies Secure communication 0103 physical sciences Synchronization (computer science) 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering 010301 acoustics Multistability business.industry Key space Signal Processing symbols Equivalent circuit 020201 artificial intelligence & image processing business |
| Zdroj: | Journal of Electrical and Computer Engineering, Vol 2018 (2018) |
| ISSN: | 2090-0147 |
| DOI: | 10.1155/2018/8649294 |
| Popis: | The four-wing memristive chaotic system used in synchronization is applied to secure communication which can increase the difficulty of deciphering effectively and enhance the security of information. In this paper, a novel four-wing memristive chaotic system with an active cubic flux-controlled memristor is proposed based on a Lorenz-like circuit. Dynamical behaviors of the memristive system are illustrated in terms of Lyapunov exponents, bifurcation diagrams, coexistence Poincaré maps, coexistence phase diagrams, and attraction basins. Besides, the modular equivalent circuit of four-wing memristive system is designed and the corresponding results are observed to verify its accuracy and rationality. A nonlinear synchronization controller with exponential function is devised to realize synchronization of the coexistence of multiple attractors, and the synchronization control scheme is applied to image encryption to improve secret key space. More interestingly, considering different influence of multistability on encryption, the appropriate key is achieved to enhance the antideciphering ability. |
| Databáze: | OpenAIRE |
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