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Chaotic pendulum driven by periodic external force

CHENG Min-xi,ZENG Bi-fen,LIU Hui-na,HUANG Ming(School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou 510006,China)  
In order to intuitionisticly show phenomena of chaos,an experiment system of chaotic pendulum driven by periodic external force is designed. There are three parts,namely mechanical section,acquirement section and analyzer,in the system. The mechanical section is a pendulum driven by periodic external force;data are acquired by breakerless angle sensor and transferred to computer through serial communication;the analyzer is a virtual instrument written by LabVIEW. The angle-time curve,angular velocity-time curve and phase curve can be displayed in real time.
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