摘要
介绍了一种新型转动惯量实验装置的工作原理、性能和实验结果。该实验装置由转动惯量实验仪、霍尔感应器和多功能计时计数毫秒仪组成。应用霍尔传感器结合多功能计时计数毫秒仪自动记录刚体在一定转动力矩作用下,转过π角位移时刻,测定刚体转动时的角加速度和刚体的转动惯量。与原有测量装置相比,可消除较大部分系统误差和偶然误差,使数据接近真值、测量方便、重复性好、节省时间、效率高。实验结果也表明,所研制的实验装置具有较好的实验性和可靠性。
A new rotational inertia test instrument is designed, and principle of its operation, property and test result are introduced. The experimental device is composed of rotational inertia test instrument, Holl sensor and a multi-function instrument which can complete timing and counting with millisecond level. Holl sensor and muhifunctional timing and counting millisecond instrument can automatically record the moment that rigid body has π angular displacement under a certain turning torque, and determinate the angular acceleration and the rotational inertia of rigid body. Compared with the original measuring device, it can eliminate most system error and random error, and it has the advantages of time saving, convenient measurement, good repeatability, high efficiency and so on. The experimental results also show that the instrument has good practicality and reliability.
出处
《实验室研究与探索》
CAS
北大核心
2015年第5期63-66,共4页
Research and Exploration In Laboratory
基金
同济大学第七期精品实验教改项目
关键词
转动惯量
霍尔感应器
多功能计时计数毫秒仪
刚体
moment of inertia
Holl sensor
multi-function timing and counting milliseconds instrument
rigid body