机械式李萨如图形演示仪的设计  

Design of Mechanical Lissauru Figures Demonstrator

作　　者：杨慧舟 余观夏[1,2] 张晓萌 骆敏[2] 林杨帆 YANG Huizhou;YU Guanxia;ZHANG Xiaomeng;LUO Min;LIN Yangfan(College of information Science and Technology,Nanjing Forestry University,Nanjing 210037,China;Teaching Center of Experimental Physics,Nanjing Forestry University,Nanjing 210037,China;College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学信息科学技术学院,江苏南京210037 [2]南京林业大学物理实验中心,江苏南京210037 [3]南京林业大学材料学院,江苏南京210037

出　　处：《大学物理实验》2020年第4期56-59,共4页Physical Experiment of College

基　　金：2017年南京林业大学大学生创新项目计划项目。

摘　　要：针对传统李萨如图形演示仪器的不足,设计了一种机械式李萨如图形演示仪。该演示仪运用两杆的圆周运动,在两个相互垂直方向控制平面上二极管的导通和熄灭,显示相互垂直的简谐运动所合成的运动点的轨迹。利用该仪器可以控制两个圆周运动的角速度和初始位置,通过二极管显示不同频率比和相位差的李萨如图形。A mechanical Lissauru figure demonstrator was designed,which overcome the deficiencies of the traditional Lissauru figure demonstrator.By the control on and off of the diodesthroughtwo mutually perpendicular circular motion of two vertical poles,the trajectories of points of motion synthesized by two harmonic motions perpendicular to each other can be shown in the plane.Furthermore,the Lissauru figures can shown with different frequency ratio and phase difference by controlling the angular velocity and initial position of the two circular motions,respectively.

关 键 词：李萨如图形 机械式 演示仪 

分 类 号：O321[理学—一般力学与力学基础]