无电感蔡氏电路设计方法与应用

经典蔡氏电路由于电感元件的存在,使得蔡氏电路误差较大,设计精度很难提高。针对这一缺陷设计出没有电感器的、与经典蔡氏电路输出完全相同的混沌电路。设计方法是深入分析蔡氏二极管的静态特性曲线,借鉴并且结合CNN(cellular neural networks)技术,找出相应的静态电路结构——限幅非线性电路,最终设计出由纯运算放大器构成的蔡氏电路,同时给出了另外2种应用于蔡氏电路的静态非线性电路。仿真与物理实验结果证明,该设计完全实现了设计目标。通过比较得出用限幅非线性电路实现蔡氏电路是最优化设计方法的结论。

The design method and application of the non-inductive Chua's circuit

The classical Chua′s circuit design is difficult to accurately improve  because the presence of the inductor can cause  a big error. To solve this problem, a non-inductor chaotic circuit with the same output as the classical Chua′s circuit was presented. The corresponding static circuit structure(limiting-amplitude circuit)was found by deep analysis of the static characteristic curve of Chua’s diode. Combined with CNN technology, Chua′s circuit consisting of  a pure operational amplifier  was designed and two kinds of static nonlinear circuits used in Chua′s circuits were also given. Simulation results and physical experimental results showed that the design fully reaches anticipative objectives. The comparison results showed that  the Chua′s circuit with limiting-amplitude nonlinear circuits was the optimal design.