一款基于角度传感器的复摆法重力加速度测量

A Gravity Acceleration Measurement Based on Angle Sensor by Compound Pendulum Method

利用无阻尼的非接触的角度传感器其角度与输出电压的良好线性关系,结合数字存储示波器来测量复摆的摆动角度和周期,对普通物理实验中复摆振动的研究实验的改造。充分利用了数字存储示波器测量方便、读数准确的优点,减小了实验误差。同时,对复摆的周期公式在考虑摆动角度影响下,进行了修正。

Using the good linear relationship between the angle and the output voltage of the undamped non-contact angle sensor,and combining with the digital storage oscilloscope to measure the swing angle and period of the complex pendulum,the research experiment of the complex pendulum vibration in the common physical experiment is reformed.The advantages of convenient measurement and accurate reading of digital storage oscilloscope are fully utilized,and the experimental error is reduced.At the same time,the periodic formula of complex pendulum is revised considering the influence of swing angle.