CAJ | 학술논문

李萨如图形是演示垂直振动合成的重要内容。通过研究不同频率垂直电场作用下．电子的复杂运动轨迹，给出电子运动轨迹的详细计算公式，借助MATLAB软件进行信号模拟，逼真地再现实验室所见的李萨如图形。理论及模拟图像与实验结果完全一致。模拟结果避免了实验时的信号杂散干扰。通过改变垂直电场的频率，还可以获得任选的合成图像。与实验相比，模拟显示效果更加理想，对于加深师生对电子显示原理的认识，很有价值。
리살여도형시연시수직진동합성적중요내용。통과연구불동빈솔수직전장작용하．전자적복잡운동궤적，급출전자운동궤적적상세계산공식，차조MATLAB연건진행신호모의，핍진지재현실험실소견적리살여도형。이론급모의도상여실험결과완전일치。모의결과피면료실험시적신호잡산간우。통과개변수직전장적빈솔，환가이획득임선적합성도상。여실험상비，모의현시효과경가이상，대우가심사생대전자현시원리적인식，흔유개치。
The concept of a Lissajous figure is an important content showing the perpendicular vibration synthesis. By the study about the complicate track of the electronics under a perpendicular electric field of different frequency, we obtain the detailed formulas of the track of the electronics. With the help of MATLAB software to simulate the signal on screen, we can show the Lissajous figure delicately. Calculation and simulation of the Lissajous figure are complete ly in accordance with the experiment result. The result of the simulation avoided the wild signals of the experiment. To change the frequency of a perpendicular electric field, we can also obtain the synthesized pictures we need. Compared with the experiment, the effect of simulation is more ideal; and it＇s valuable for teachers and students to strengthen the understanding of the perpendicular vibration synthesizing principle.