A5014205414- Chaos control and synchronization
- Chaos-based Image/Signal Encryption
- Neural Networks Stability and Synchronization
- Advanced Memory and Neural Computing
- Nonlinear Dynamics and Pattern Formation
- stochastic dynamics and bifurcation
- Mathematical Dynamics and Fractals
- Distributed Control Multi-Agent Systems
- Neural Networks and Applications
- Advanced Steganography and Watermarking Techniques
- Gamma-ray bursts and supernovae
- Wireless Communication Networks Research
- Advanced Wireless Communication Techniques
- Functional Brain Connectivity Studies
- Advanced Computational Techniques and Applications
- Opinion Dynamics and Social Influence
- Cellular Automata and Applications
- Advanced MRI Techniques and Applications
- Advanced Neuroimaging Techniques and Applications
- Stability and Control of Uncertain Systems
- Adaptive Control of Nonlinear Systems
- Radar Systems and Signal Processing
- Advanced X-ray Imaging Techniques
- Electroconvulsive Therapy Studies
- Adaptive Dynamic Programming Control
Changsha University of Science and Technology
2015-2025
Southern Medical University
2023-2024
Guangzhou Medical University
2023-2024
Chengdu University of Information Technology
2023-2024
Henan Polytechnic University
2024
Guangdong University of Technology
2014-2018
University of Shanghai for Science and Technology
2007
University of Electronic Science and Technology of China
2006-2007
Memristors are commonly used to introduce various chaotic systems and can be enhance their characteristics. However, due the strict construction conditions of Hamiltonian systems, there has been limited research on development memristive conservative (MHCCSs). In this work, a method for constructing three-terminal memristors is proposed, incorporated into system, resulting in class n-D MHCCS. Based method, we model 4D MHCCS as standard detailed dynamic analysis. The analysis reveals that...
By introducing a flux-controlled memristor model with absolute value function, 5D multistable four-wing memristive hyperchaotic system (FWMHS) linear equilibrium points is proposed in this paper. The dynamic characteristics of the are studied terms point, perpetual bifurcation diagram, Lyapunov exponential spectrum, phase portraits, and spectral entropy. This group systems that have coexisting attractors. In addition, circuit implementation scheme also proposed. Then, secure communication...
By introducing a flux‐controlled memristor with quadratic nonlinearity into 4D hyperchaotic system as feedback term, novel 5D four‐wing memristive (HFWMS) is derived in this paper. The HFWMS multiline equilibrium and three positive Lyapunov exponents presented very complex dynamic characteristics, such the existence of chaos, hyperchaos, limit cycles, periods. characteristics are analyzed by using equilibria, phase portraits, poincare map, exponential spectrum, bifurcation diagram, spectral...
In this paper, a simple four-wing chaotic attractor is first proposed by replacing the constant parameters of Chen system with periodic piecewise function. Then, new 4D memristive hyperchaotic presented adding flux-controlled memristor linear memductance into system. The mathematical structure model and easy to implement. Dynamical analysis numerical simulation are carried out. electronic circuit designed implemented. results in good agreement experiment. addition, shape synchronization...
A memristive Hopfield neural network (MHNN) with a special activation gradient is proposed by adding suitable memristor to the (HNN) gradient. The MHNN simulated and dynamically analyzed, implemented on FPGA. Then, new pseudo-random number generator (PRNG) based proposed. post-processing unit of PRNG composed nonlinear post-processor XOR calculator, which effectively ensures randomness PRNG. experiments in this paper comply IEEE 754-1985 high precision 32-bit floating point standard are done...
When implementing a pseudo-random number generator (PRNG) for neural network chaos-based systems on FPGAs, chaotic degradation caused by numerical accuracy constraints can have dramatic impact the performance of PRNG. To suppress this degradation, PRNG with feedback controller based Hopfield oscillator is proposed, in which neuron exposed to electromagnetic radiation. We choose magnetic flux across cell membrane as condition disturb other neurons, thus avoiding periodicity. The proposed...
This paper proposes a new memristor model and uses pinched hysteresis loops (PHL) to prove the characteristics of model. Then, 6D fractional-order memristive Hopfield neural network (6D-FMHNN) is presented by using this simulate induced current, bifurcation coexistence attractor fractional studied. Because 6D-FMHNN has chaotic characteristics, we also use generate random number apply it field image encryption. We make series analysis on randomness numbers security encryption, that encryption...
Random numbers are widely used in the fields of computer, digital signature, secure communication and information security. Especially recent years, with large-scale application smart card demand security, for high-quality random number generator is increasingly urgent. With development theory non-linear systems, design pseudorandom (PRNG) chaotic behavior systems provides a new theoretical basis implementation method. This paper presents PRNG based on no-equilibrium four-wing memristive...
In this work, a novel 6D four-wing hyperchaotic system with line equilibrium based on flux-controlled memristor model is proposed. The inspired from an existing 5D introduced by Zarei (2015). Fundamental properties of the are discussed, and its complex behaviors characterized using phase portraits, Lyapunov exponential spectrum, bifurcation diagram, spectral entropy. When suitable set parameters chosen, exhibits rich repertoire dynamic including double-period quasiperiod, single two-wing,...
Novel memristive hyperchaotic system designs and their engineering applications have received considerable critical attention. In this paper, a novel multistable 5D its application are introduced. The interesting aspect of chaotic is that it has different types coexisting attractors, chaos, hyperchaos, periods, limit cycles. First, proposed by introducing flux-controlled memristor with quadratic nonlinearity into an existing 4D four-wing as feedback term. Then, the phase portraits, Lyapunov...
In this paper, we further study the dynamic characteristics of Yu–Wang chaotic system obtained by Yu and Wang in 2012. The can show a four-wing attractor any direction, including all 3D spaces 2D planes. For reason, our interest is focused on multistability generation FPGA implementation. stability analysis, bifurcation diagram, basin attraction, Lyapunov exponent spectrum are given as methods to analyze behavior system. analyses that each parameter has different coexistence phenomena...
In this paper, a multistable modified fourth-order autonomous Chua’s chaotic system is investigated. addition to the dynamic characteristics of third-order itself, what interests us that has five different types coexisting attractors: double-scroll, single band attractor, period-4 limit cycle, period-2 and period-1 cycle. Then, an inductorless circuit proposed. The active elements as well synthetic inductor employed in are designed using second-generation current conveyors (CCIIs). reason...
In this paper, we propose a method to design the pseudorandom number generator (PRNG) using three kinds of four-wing memristive hyperchaotic systems (FWMHSs) with different dimensions as multientropy sources. The principle is obtain numbers good randomness by coupling XOR operation on FWMHSs dimensions. order prove its potential application in secure communication, security PRNG based scheme analyzed from perspective cryptography. addition, has passed NIST 800.22 and ENT test, which shows...
In recent years, the research of chaos theory has developed from simple cognition and analysis to practical engineering application. particular, hyperchaotic systems with more complex changeable chaotic characteristics are sensitive unpredictable, so they widely used in fields. this paper, two important applications based on hyperchaos pseudorandom number generator (PRNG) image encryption studied. Firstly, coupling 6D memristive system a 2D SF‐SIMM discrete mapping as double entropy source...
The existing single-pulse search algorithms for fast radio bursts (FRBs) do not adequately consider the frequency bandpass pattern of pulse, rendering them incomplete relatively narrow-spectrum detection pulses. We present a new algorithm narrow-band pulses to update standard pipeline, Bandpass-Adaptive Single-pulse SEarch Toolkit (BASSET). BASSET employs time-frequency correlation analysis identify and remove noise involved by zero-detection band, thereby enhancing signal-to-noise ratio...
In comparison with dissipative chaos, conservative chaos is better equipped to handle the risks associated reconstruction of phase space due absence attractors. This paper proposes a novel five-dimensional (5D) memristive hyperchaotic system (CMHS), by incorporating memristors into four-dimensional (4D) chaotic (CCS). We conducted comprehensive analysis, using Lyapunov exponent diagrams, bifurcation portraits, equilibrium points, and spectral entropy maps thoroughly verify system’s...