弦振动

本文利用Fourier分析方法，讨论了一类由混合边界弦振动方程决定的分布参数控制系统的控制函数集。

By means of Fourier analysis , the control function sets of a kind of distributed parameter control systems , which are determined by mixed-end points string vibration equation were discussed .

介绍一种适用于物理实验教学的新型弦振动装置，描述了其基本结构及工作原理，并给出时基信号控制电路部分的PSpice仿真波形。

The paper introduces a kind of new physics experimental teaching equipment on string vibration , mainly describes its basic structure and work principle , then gives the simulation wave form of the time-control electric circuit based on PSpice software .

一般弦振动方程GAUCHY问题的Fourier级数解法

The Fourier Series Solution of the CAUCHY Problem for General Chord Oscilating Equations

弦振动方程Cauchy问题广义解的结构

Structure of the Generalized Solution of the Cauchy Problem to the Vibrating String Equation

PSD在弦振动测量中的应用

Application of PSD For Vibration Measure

进而，应用不涉及群论的CK直接方法得到了非线性弦振动方程的更为一般的相似约化。

The more general similarity reductions are obtained by the CK direct method , this method does not require the Lie group theoretic techniques .

然后以求解非线性弦振动方程和组合KdV方程为例，指出其中的展开函数应该满足的两个条件。

That two conditions of the expansion functions should be satisfied was presented by solving the nonlinear vibrating string equation and the combined KdV equation .

利用改进的tanh函数法，将非线性弦振动方程化为一阶非线性常微分方程组。

With the improved tanh-function method , the equations of nonlinear vibrating string are reduced to first-order nonlinear ordinary differential equations .

该仪器由按弦振动原理设计的XD-1型振动式细度仪及具有气动夹持操作及数据处理功能的XQ-1型纤维强伸度仪组成。

It is composed of the XD-I vibroscope based on the string vibration and the XQ-I fibre tensile tester with pneumatic clamp operating and data processing function .

电磁驱动的固定弦振动的理论分析

Theoretical analysis for stationary vibration of a metal string driven electromagnetically

能够使得钢琴弦振动的用毛布覆盖的锤子。

The felt-covered striker that causes the piano strings to vibrate .

无限长与半无限长弦振动的分离变量解法

Separation of variables for vibration problems of infinite and semiinfinite strings

对半无限长弦振动的讨论

Discussion on the Vibration of Half & infinite of Long Chord

非线性弦振动方程的精确解

The exact solutions to the equation of nonlinear vibrating string

非线性弦振动方程的新类孤子解

New Soliton-like Solutions for the Equation of Nonlinear Vibrating String

钢琴弦振动谱分析及其音色重构

Spectrum Analysis of Piano String Vibration and Piano tamber reconstruction

弹性联结的半无界弦振动的混合问题

Mixed Problem of the Vibration of Half Infinite String with Elastic Coupling

关于半无界弦振动问题的解

On the solutions of the vibrating problem for a half unbounded string

用弦振动形成的驻波测定液体的密度

Density Measurement of Liquid by Using the Standing Wave of String Vibration

弦振动实验的若干讨论

Discussion on the Experiment of Vibration of a String

打点计时器用于弦振动研究

Studying on the vibration of a chord by using the printing point timer

利用固定均匀弦振动仪测量液体的体胀系数

Measuring Expansion Coefficient of Liquid with Equipment With Fixed and Symmetrical String Vibration

弦振动数学模型用于导线振动时的改进

Improvement of Mathematical Model of Chord Vibration during It Applied to a Wire Vibration

从数学上证明了上端固定、下端作圆周运动的弦振动会形成驻波。

The balloon is the rotational standing wave according to the string vibration theory .

有界弦振动方程与有界杆热传导方程三类边界问题的研究

Equations of Bounded sinusoidal vibrations Equations of Bounded Thermal Conduction in strips or Bars

对弦振动实验中振源的改进

Improvement of vibration source in string vibration experiment

解弦振动方程初始条件的反问题

Solution of the inverse problem for an initial condition in a string vibrating equation

弦振动驻波分析

Standing wave analyse in a string vibration

在弦振动驻波实验中，对于起振端是波节还是波腹，存在不同的认识。

There are different viewpoints about the wave source in the experiment of vibration of string .

阻尼作用下的弦振动研究

Studies on damped oscillation of string