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.
出处
《大学物理》
北大核心
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
关键词
受迫振动
混沌
椭圆轨道驱动
forced oscillation
chaos
driven along elliptical orbit
