从受迫振动到混沌的实验系统设计  

Designing of a chaotic movement system based on forced oscillation

作　　者：程敏熙[1] 肖凤平[1] 李志为[1] 

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006

出　　处：《大学物理》2014年第11期34-37,共4页College Physics

基　　金：广东省本科院校教育教学改革项目(2013)资助

摘　　要：研究构建了一个由椭圆轨道方式驱动的弹簧振子混沌运动系统,它基于弹簧振子受迫振动的形式并符合混沌运动的条件.椭圆轨道长半轴a=20 mm,短半轴b=16 mm,驱动电机是由单片机模块控制的调频直流电机,角速度ω的范围是20~80 r/min,振子的位移x由朗威DisLab数字化实验系统测量.实验结果与理论模拟符合较好.A chaotic movement system of spring oscillator driven along elliptical orbit is set up. It is based on forced oscillation and coincided with the condition of chaos. Major semi-axis and minor semi-axis of elliptical orbit are a =20 mm, b= 16 mm. Driving motor worked on a mode of frequency modulation which controlled by singlechip microcomputer. The range of angular velocity co is 20- 80 r/min. The displacement of oscillator is detected by DisLab system. The experiment result is in agreement with theoretical simulation well.

关 键 词：受迫振动 混沌 椭圆轨道驱动 

分 类 号：O4-33[理学—物理]