A Memristor-Based Complex Lorenz System and Its Modified Projective Synchronization

• Main Authors: Shibing Wang, Xingyuan Wang, Yufei Zhou
• Format: Article
• Language: English
• Published: MDPI AG 2015-11-01
• Series: Entropy
• Subjects: memristor-based; complex Lorenz system; nonlinear dynamics; modified projective synchronization
• Online Access: http://www.mdpi.com/1099-4300/17/11/7628

The aim of this paper is to introduce and investigate a novel complex Lorenz system with a flux-controlled memristor, and to realize its synchronization. The system has an infinite number of stable and unstable equilibrium points, and can generate abundant dynamical behaviors with different parameters and initial conditions, such as limit cycle, torus, chaos, transient phenomena, etc., which are explored by means of time-domain waveforms, phase portraits, bifurcation diagrams, and Lyapunov exponents. Furthermore, an active controller is designed to achieve modified projective synchronization (MPS) of this system based on Lyapunov stability theory. The corresponding numerical simulations agree well with the theoretical analysis, and demonstrate that the response system is asymptotically synchronized with the drive system within a short time.