Dynamics of a Strengthened Chaotic System and Its Circuit Implementation  

作　　者：SUN Kehui LIU Xuan ZHU Congxu 

机构地区：[1]School of Physics and Electronics, Central South University

出　　处：《Chinese Journal of Electronics》2014年第2期353-356,共4页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61161006 and No.61073187);the SRF for ROCS,SEM

摘　　要：To strengthen a chaotic system, a state feedback controller is applied to generate hyperchaotic behaviors based on the simplified Lorenz system, and a coordinate transformation is used for converting topological structure of the hyperchaotic system from two wings to four wings. Complex dynamics of the hyperchaotic and four-wing attractor system are analyzed and verified by Lyapunov exponent spectrums, bifurcation diagrams,phase portraits, Poincar′e sections and circuit realization.The circuit experiment results are agreed well with the simulation results, and it lays a good foundation for the chaotic secure communication.To strengthen a chaotic system, a state feedback controller is applied to generate hyperchaotic be- haviors based on the simplified Lorenz system, and a co- ordinate transformation is used for converting topologi- cal structure of the hyperchaotic system from two wings to four wings. Complex dynamics of the hyperchaotic and four-wing attractor system are analyzed and verified by Lyapunov exponent spectrums, bifurcation diagrams, phase portraits, Poincare sections and circuit realization. The circuit experiment results are agreed well with the simulation results, and it lays a good foundation for the chaotic secure communication.

关 键 词：HYPERCHAOS Multi-wing attractor Sim- plified Lorenz system Circuit implementation. 

分 类 号：O415.5[理学—理论物理] TP183[理学—物理]