受迫振动阻尼复摆实验仪

Application of forced vibration damping compound pendulum experimental instrument

利用自制受迫振动阻尼复摆实验仪可以研究物体在受迫振动时的各种振动状况和规律,以及在有阻尼和无阻尼情况下的幅频特性曲线和相频特性曲线,并可以测量共振状况下的阻尼系数.利用该仪器还可以研究复摆的运动规律和计算方法及大角度摆的振动状况,实验曲线可显示在5.6英寸彩色液晶屏上.该液晶屏可将屏幕图形定格、拉伸放大,便于测量和计算.

A forced vibration damping compound pendulum experimental instrument was designed by the Mathematics Department of Nanjing Institute of Technology.Using this instrument,the vibration condition and law of forced vibration were studied.The amplitude-frequency curve,the phase-frequency curve and the damping coefficient with and without damping were obtained.In addition,the motion law and calculation method of compound pendulum and the vibration of large angle pendulum were researched.The experimental curves of all the above phenomena could be displayed on a 5.6-inch color LCD screen.Vibration image could also be fixed,stretched and magnified to make it easy to be measured and calculated..