摘要
通过光电编码器对波耳共振仪的数据进行可视化与精确化处理,设计相应的机械结构安装光电编码器,编写STM32单片机程序,间隔10ms读取编码器信息,并将摆轮的信息实时呈现在计算机上.对所采集的大量数据进行处理,可得角位移-时间曲线、角速度-时间曲线和振动相图.利用改进后的仪器可探究自由振动、阻尼振动、受迫振动的运动规律并观察上述物理运动中的混沌现象.
The visualization and precisization of Pohl resonance instrument were achieved by using photoelectric encoder.A mechanical structure was designed to host the encoder and a STM32 microcontroller were adopted to read the encoder every 10 milliseconds.Thus,the real time data of the balance wheel could be presented on the computer screen.The angular displacement-time and angular speed-time graphs and the vibration phase diagram were obtained after data processing.By utilizing the improved instrument,the law of free oscillation,damped oscillation,forced oscillation,compound pendulum oscillation and chaos phenomenon could be observed.
作者
陈俊宇
董国波
刘少华
李朝荣
李华
CHEN Jun-yu;DONG Guo-bo;LIU Shao-hua;LI Chao-rong;LI Hua(School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China;School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China;School of Astronautics, Beihang University, Beijing 100191, China)
出处
《物理实验》
2019年第7期43-47,共5页
Physics Experimentation
基金
北京市自然科学基金资助项目(No.2161001)
北京航空航天大学重大、重点教改项目
关键词
波耳共振仪
STM32单片机
光电编码器
可视化
混沌现象
Pohl resonance instrument
STM32 microcontroller
photoelectric encoder
visualization
chaos phenomenon
