一种基于有源模拟电感的单电源蔡氏电路  

A single supply Chua’s circuit based on active simulated inductor

作　　者：段晓飞 高同强 DUAN Xiaofei;GAO Tongqiang(Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100190,China;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国科学院空天信息创新研究院,北京100190 [2]中国科学院大学电子电气与通信工程学院,北京100190

出　　处：《太赫兹科学与电子信息学报》2021年第6期1120-1125,1133,共7页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家自然科学基金资助项目(6170417,61974146)。

摘　　要：蔡氏电路是一种结构简单、便于实现的混沌电路,其中蔡氏二极管是蔡氏电路的核心,目前大多采用正负电源供电的运放和电阻来实现。本文在分析蔡氏二极管原理的基础上,通过给运放设置合适的偏置点,采用单电源供电电路实现蔡氏二极管模型。在电路的具体实现中,现有蔡氏电路所采用的线性电感具有价格高、精度不易控制等缺点,为了克服这个问题,本文采用有源模拟电感代替线性电感的设计思想,针对两种有源模拟电感的实现方案,进行了板级电路设计和测试验证。测试结果表明,在+5 V单电源供电下,利用模拟电感代替线性电感不会影响电路的混沌性。Chua’s circuit is a kind of chaotic circuit with simple structure and easy realization.Chua’s diode is the core of Chua’s circuit.Most of the existing Chua’s diode models are implemented by dual-supply operational amplifiers and resistors.This paper sets the appropriate bias point for the operational amplifier and realizes the model of Chua’s diode with a single power supply circuit.In the circuit implementation,the linear inductors used in the existing Chua’s circuit have the disadvantage of high price and difficult precision control.To tackle these problems,this paper takes the active simulated inductors to replace the linear inductors.The board-level circuit is designed and tested for two kinds of active simulated inductors.The test results indicate that using simulated inductor will not affect the chaos of the circuit under+5 V single power supply.

关 键 词：蔡氏电路 蔡氏二极管 模拟电感 单电源 硬件实现 

分 类 号：TN433[电子电信—微电子学与固体电子学]