实验科学与技术
實驗科學與技術
실험과학여기술
EXPERIMENT SCIENCE AND TECHNOLOGY
2011年
4期
61-62,92
,共3页
振动叠加%拍现象%李萨如图形%初相差
振動疊加%拍現象%李薩如圖形%初相差
진동첩가%박현상%리살여도형%초상차
vibration superposition%beat phenomenon%Lissa-jous figure%phase difference
讨论了振动叠加的问题,从理论和实验上研究了振动叠加的拍现象和李萨如图形,并利用MATLAB软件模拟了拍现象和李萨如图形;针对实验中李萨如图形的旋转情况,从理论和数值计算上分析了初相差变化以及信号频率的相对微小差异对图形稳定程度的影响,从而解释其转动的原因。
討論瞭振動疊加的問題,從理論和實驗上研究瞭振動疊加的拍現象和李薩如圖形,併利用MATLAB軟件模擬瞭拍現象和李薩如圖形;針對實驗中李薩如圖形的鏇轉情況,從理論和數值計算上分析瞭初相差變化以及信號頻率的相對微小差異對圖形穩定程度的影響,從而解釋其轉動的原因。
토론료진동첩가적문제,종이론화실험상연구료진동첩가적박현상화리살여도형,병이용MATLAB연건모의료박현상화리살여도형;침대실험중리살여도형적선전정황,종이론화수치계산상분석료초상차변화이급신호빈솔적상대미소차이대도형은정정도적영향,종이해석기전동적원인。
The problem of vibration superposition was discussed.Beat phenomenon and Lissa-jous figure were investigated theoretically and experimentally,at the same time they were simulated by Matlab software.The phase difference and the difference of frequency of signal＇s influence on Lissa-jous figure were analyzed in theory and by numerical calculation method,and the reason of rotation of Lissa-jous figure was explained.
