基于NI-myDAQ数据采集器的混沌电路实验系统  

Experimental system for chaotic circuit based on NI-myDAQ data acquisitor

作　　者：廖德驹 沈韩[1,2] 冯饶慧 崔新图[1,2] 黄臻成 方奕忠[1,2] LIAO De-ju;SHEN Han;FENG Rao-hui;CUI Xin-tu;HUANG Zhen-cheng;FANG Yi-zhong(School of Physics,Sun Yat-sen University,Guangzhou,Guangdong 510275,China;National Demonstration Center for Experimental Physics Education(Sun Yat-sen University),Guangzhou,Guangdong 510275,China)

机构地区：[1]中山大学物理学院,广东广州510275 [2]物理学国家级实验教学示范中心(中山大学),广东广州510275

出　　处：《大学物理》2021年第1期24-26,47,共4页College Physics

基　　金：2018年度中山大学质量工程与教学改革研究项目(2018WL-ZLJG023)资助。

摘　　要：混沌电路是大学物理实验课程中非线性系统教学内容的典型案例,为了提高学生对非线性实验内容的学习效率和自主学习能力,本文设计了一种基于NI-myDAQ数据采集器和LabVIEW软件平台的混沌电路实验系统.该系统可提高混沌参数微小变化的精密性,实时显示并记录不同参数下的混沌现象,能保存相图、时域图和数据.用该系统测量了蔡氏混沌电路,给出了一定参数下的混沌电路实测结果图,并和Multisim仿真结果比较.结果表明,实验系统测量结果与Multisim仿真结果相吻合.Chaotic circuit is a typical content of nonlinear system in the course of college physics experiment.In order to improve students'learning efficiency and self-learning ability of nonlinear experiment,a Chaotic circuit experiment system is designed base on NI-myDAQ and LabVIEW.This system can improve the precision of small changes of chaotic parameters.It could intuitively display and record chaotic patterns in real time under different parameters,and save phase diagrams,time domain diagrams and data.The Chua's chaotic circuit is measured by using this system,and the experimental results under certain parameters are given and compared with the simulation results obtained by using Multisim.The experimental results are in well agreement with that of the simulation.

关 键 词：NI myDAQ 混沌电路 MULTISIM LABVIEW 

分 类 号：O4-39[理学—物理]