蔡氏电路和音频信号保密通信的实验研究

The Research of Chua's Circuit and Audio Signals on Secure Communications

我校电路原理实验教学增设综合性自主探究实验环节,根据教师提出的要求,学生自主设计实验内容和实验电路,自拟实验方案。在完成相应的仿真分析后,焊接电路并对预期的功能进行测试,最后递交研究报告,接受现场测试和答辩。本文是基于其中的一个作品-"研究非线性电路系统中的混沌现象以及在保密通信中的应用"。论文选择蔡氏电路作为产生混沌的基本电路,对其中的非线性电阻、电感元件的构成进行了分析和改进,用Matlab,PSpice软件对该电路分析,并制作电路进行了实际调试。应用此混沌产生模块构建了一个简单的保密通信系统,通过软件仿真和对音频信号的传输实验对其功能进行检验。

A series of integrated practice based on project training is implemented by electrical circuit experiment teaching in our university. The students explore complex projects through design, simulation, making PCB board, testing and presentation. This paper introduces the implementation of one of the projects. Chugs circuit is widely used for Chaos phenomenon in the study of nonlinear circuit theory. By modifying Chugs circuit and analyzing it with Matlab, PSpice software, we carried out the actual debugging. Finally a simple secret communication system is produced, by the software analysis and reality test to prove which realized the secret communication.