摘要
采用弹性摆受迫振动时幅频特性对阻尼的依赖关系为依据,借助非接触电磁激振装置和(AX1001)单片机,通过测量所得的幅频特性曲线算出相应的阻尼系数。在密闭的环境下,改变空气的压强得到相应数值下的空气阻尼系数,最终,给出空气阻尼系数与压强之间的关系。
It is based that amplitude frequency characteristics depend on damping when the flexible pendulum is forced to vibrate by the damped oscillation with the help of non-contact electromagnetic vibration device and Single Chip Micyoco. The corresponding damping coefficient is gotten due to the measured amplitude frequency characteristic curve. The relationship between coefficient of air resistance and pressure is studied by changing the air pressure in closed environment to get different air damping coefficient.
出处
《大学物理实验》
2014年第6期44-47,共4页
Physical Experiment of College
关键词
弹性摆
受迫振动
幅频特性
空气阻尼系数
(AX1001)单片机
elastic pendulum
forced vibration damping
amplitude-frequency characteristics
pressure
air damping
non-contact electromagnetic vibration
light amplification
single Chip Micyoco
