JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2010, Vol. 40 ›› Issue (6): 134-138.

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

ZHANG Xin-guo1, XU Chong-fang1*, WANG Jin-shuang1, YAN Ji-cong1, HAN Ting-wu1,2   

  1. 1. Institute of Information Engineering, Shandong Foreign Languages Vocational College, Rizhao 276826,   China;
    2. College of Science, Shandong Science and Technology University, Qingdao 266510, China
  • Received:2010-04-27 Online:2010-12-16 Published:2010-04-27

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Abstract:

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.

Key words: chaos, operational amplifer, Chua′s circuit, cubic nonlinear, optimization design

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