基于电流反馈运算放大器的忆阻混沌电路设计与仿真

摘要

In this work, we propose a novel memristor chaotic circuit, which combines current feedback op amp with four basic electronic components, such as capacitance, inductance, resistance and memristor. The dynamic properties of the new circuit are demonstrated, such as system dissipation, equilibrium stability, phase portrait, Lyapunov exponent spectrum, and parameter influence. Numerical simulation results show that the circuit produces a kind of special chaotic attractor and exhibits complicated chaotic behaviour with the evolution of the system parameters. In order to confirm the correctness of the system, a realizing circuit is designed, Pspice simulation results verify the correctness of theoretical analysis.%将电流反馈运算放大器和四种基本电路元件电容、电感、电阻、忆阻器巧妙结合，设计出一种新型忆阻混沌电路。分析系统的基本动力学行为，如耗散性、平衡点稳定性、相图、Lyapunov指数和参数影响等。数值仿真结果表明，该电路可产生一类特殊的混沌吸引子，且随系统参数的演变可产生丰富复杂的混沌特性。为了验证系统的正确性，设计了实现该系统的仿真电路， Pspice仿真结果验证了理论分析的正确性。