用调频正弦波形和示波器同步原理模拟纵波  

Simulation of longitudinal wave based on frequency modulated waveform and oscillograph synchronization principle

作　　者：刘洪滢[1] 

机构地区：[1]保定师范专科学校物理系,河北保定071051

出　　处：《物理实验》2006年第1期40-41,46,共3页Physics Experimentation

摘　　要：基于示波器同步原理,用固定周期的调制电信号模拟机械简谐振动源,用调频波形模拟质点的稠密区和稀疏区,用不同步的左右移动波形模拟质点作简谐振动,实现了在示波器上模拟纵波.A new method of simulation of longitudinal wave is introduced in this paper, which is based on frequency modulated waveform and oscillograph synchronization principle. Periodic modulated electronic signals are used to simulate simple periodic vibration, particle＇s dense area and sparse area are simulated by frequency modulated waveform. A synchronous vibrational waveform is employed to simulate particle＇s simple periodic vibration, and all results are shown on the screen.

关 键 词：纵波 模拟 简谐振动 调频波形 

分 类 号：O321[理学—一般力学与力学基础]