利用智能手机研究气垫导轨上的阻尼振动  

Using a Smart Phone to Study Damping Vibration on Air Track

作　　者：胡琦珩 丁益民[1] 李正天[1] 冯一帆[1] 宋伊[1] 李啸越 

机构地区：[1]湖北大学物理与电子科学学院

出　　处：《物理通报》2017年第7期70-72,共3页Physics Bulletin

基　　金：物理学国家级特色专业建设项目,项目编号:TS10985;湖北省大学生创新训练计划项目,项目编号:201610512060

摘　　要：在气垫导轨上探究弹簧振子的阻尼振动实验中，一般采用半衰期法来测量黏性阻尼常量．而半衰期通常是依靠肉眼判断半衰点并利用手动控制电子秒表来测量的，这种方法不仅误差大而且不易操作．利用智能手机传感器和SPARKvue软件，通过绘制弹簧振子的“加速度一时间”图像来测量黏性阻尼常量，既提高了实验精度也增强了实验的可操作性．The half - life method is usually used to measure the viscous damping constant during the damping vibration experiment of spring on air track, while the half - life is usually determined by the naked eyes to determine the half-point and the use of manual control of electronic stopwatch to measure,this method is not only error and large not easy to operate. In this paper,we use the smartphone sensor and SPARKvue software to measure the viscous damping constant by plotting the ＂acceleration-time＂ image of the spring vibrator,which not only improves the experimental precision but also enhances the operability of the experiment.

关 键 词：阻尼振动 黏性阻尼常量 智能手机 SPARKvue 

分 类 号：O328[理学—一般力学与力学基础]