基于差动电容传感器的阻尼振动研究  

Research on damped vibration with differential capacitance sensor

作　　者：孙殿平[1,2] 郭超修 柴志方 赵振杰 SUN Dian-ping;GUO Chao-xiu;CHAI Zhi-fang;ZHAO Zhen-jie(State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China;School of Physics and Materials Science, East China Normal University, Shanghai 200062, China)

机构地区：[1]华东师范大学精密光谱科学与技术国家重点实验室,上海200062 [2]华东师范大学物理与材料科学学院,上海200062

出　　处：《大学物理》2019年第7期36-38,共3页College Physics

基　　金：高校物理实验课程教学研究项目(01-201601-24);华东师范大学大夏学堂基金项目(40400-120211-10001)资助

摘　　要：本文利用差动变面积传感器和数字示波器对实验台位移进行了动态测量,通过阻尼振动方程的拟合,得到较好拟合优度,计算了阻尼因数、振动频率等参数,并与幅值-时间拟合方法得到的参数进行比较.The displacement of a test bench is measured by using a sensor with differential variable area and a digital oscilloscope. The better fitting degree is obtained and the damping factor, vibration frequency and other parameters are calculated from the data fitting with the damped vibration equation, which are also compared with the parameters obtained from the fitting data of the amplitude-time curve.

关 键 词：一维无限深方势阱 力算符 相干差动电容传感器 阻尼振动 刚度系数 

分 类 号：O441[理学—电磁学] O58[理学—物理]