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Dynamic analysis,FPGA implementation,and cryptographic application of an autonomous 5D chaotic system with offset boosting

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Frontiers of Information Technology & Electronic Engineering 2020年第6期21卷 950-961页

作者： Sifeu TAKOUGANG KINGNI Karthikeyan RAJAGOPAL Serdar CICEK Ashokkumar SRINIVASAN Anitha KARTHIKEYAN Department of Mechanical Petroleum and Gas EngineeringFaculty of Mines and Petroleum IndustriesThe University of MarouaMaroua P.O.Box 46Cameroon Faculty of Electrical and Electronics Engineering Ton Due Thang UniversityHo Chi Minh City 758307Vietnam Department of Electronic and Automation Vocational School of HacibektasNevsehir Hacibektar Veli UniversityHacibektas 50800Turkey Center for Nonlinear Dynamics Defence UniversityBishoftu 6020Ethiopia

An autonomous five-dimensional(5D)system with offset boosting is constructed by modifying the well-known three-dimensional autonomous Liu and Chen *** points of the proposed autonomous 5D system are found and its stability is *** proposed system includes Hopf bifurcation,periodic attractors,quasi-periodic attractors,a one-scroll chaotic attractor,a double-scroll chaotic attractor,coexisting attractors,the bistability phenomenon,offset boosting with partial amplitude control,reverse period-doubling,and an intermittency route to *** a field programmable gate array(FPGA),the proposed autonomous 5D system is implemented and the phase portraits are presented to check the numerical simulation *** chaotic attractors and coexistence of the attractors generated by the FPGA implementation of the proposed system have good qualitative agreement with those found during the numerical ***,a sound data encryption and communication system based on the proposed autonomous 5D chaotic system is designed and illustrated through a numerical example.

关键词： Chaotic system Hopf bifurcation Coexistence of attractors offset boosting FPGA implementation Sound encryption

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Embedding any desired number of coexisting attractors in memristive system

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Chinese Physics B 2021年第12期30卷 53-62页

作者： Chunbiao Li Ran Wang Xu Ma Yicheng Jiang Zuohua Liu Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET) Nanjing University of Information Science&TechnologyNanjing 210044China School of Artificial Intelligence Nanjing University of Information Science&TechnologyNanjing 210044China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China

A simple variable-boostable system is selected as the structure for hosting an arbitrarily defined memristor for chaos *** derived three-dimensional(3-D)memristive chaotic system shows its distinct property of offset,amplitude and frequency *** its merits any desired number of coexisting attractors are embedded by means of attractor doubling and self-reproducing based on function-oriented offset *** this circumstance two classes of control gates are found:one determines the number of coexisting attractors resorting to the independent offset controller while the other is the initial condition selecting any one of *** simulation gives a consistent output with theoretically predicted embedded attractors.

关键词： offset boosting attractor doubling attractor self-reproducing memristive system

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Linear synchronization and circuit implementation of chaotic system with complete amplitude control

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Chinese Physics B 2017年第12期26卷 124-133页

作者：李春彪 Wesley Joo-Chen Thio Julien Clinton Sprott 张若洵陆天爱 Jiangsu Key Laboratory of Meteorological Observation and Information Processing Nanjing University of Information Science & Technology Nanjing 210044 China School of Electronic & Information Engineering Nanjing University of Information Science & Technology Nanjing 210044 China Department of Electrical and Computer Engineering The Ohio State University Columbus OH 43210 USA Department of Physics University of Wisconsin-Madison Madison WI 53706 USA College of Teacher Education Xingtai University Xingtai 054001 China

Although chaotic signals are considered to have great potential applications in radar and communication engineering, their broadband spectrum makes it difficult to design an applicable amplifier or an attenuator for amplitude conditioning. Moreover, the transformation between a unipolar signal and a bipolar signal is often required. In this paper, a more intelligent hardware implementation based on field programmable analog array （FPAA） is constructed for chaotic systems with complete amplitude control. Firstly, two chaotic systems with complete amplitude control are introduced, one of which has the property of offset boosting with total amplitude control, while the other has offset boosting and a parameter for partial control. Both cases can achieve complete amplitude control including amplitude rescaling and offset boosting. Secondly, linear synchronization is established based on the special structure of chaotic system. Finally, experimental circuits are constructed on an FPAA where the predicted amplitude control is realized through only two independent configurable analog module （CAM） gain values.

关键词： complete amplitude control amplitude rescaling offset boosting linear synchronization

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