单位脉冲函数

引入单位脉冲函数和Dirac函数之后，从平面应力基本方程出发，建立了两端固支深梁静力问题的状态方程，还给出了问题的解析解。

In this paper , the state equation of bending for a two-end built-in beam is established from basic equations of plane stress problem by introducing a unit pulse function and Dirac 's function . An analytical solution is given .

模态参数识别的单位脉冲响应函数法

The impulse response function method of modal parameter identification

本文详细地阐述了模态参数识别的单位脉冲响应函数法的原理和应用。

The theory and application of impulse response function method of modal parameter identification is elaborated in this paper .

本文采用了单位脉冲响应函数法识别模态参数，由所建数学模型的特征方程识别结合部的物理参数。

The impulse response method is adopted to identify the modal parameters , and the physical parameters are estimated from the characteristic equation of the mathematical model built .

以盘刀式切碎器刀盘系统的动态数学模型为基础，本文分析了刀盘系统在稳态条件下对单位脉冲扭矩函数的响应。

On the basis of dynamic mathematical model established for flywheel system in flywheel-type forage cutterhead , the response of the system to pulse form unit torque is analysed in this paper .

根据振动分析原理，引用单位脉冲响应函数矩阵，导出了弹性系统之间发生多点碰撞的动力方程组，揭示了系统动态特性在碰撞过程中的重要作用。

According to the theory of the collision analysis , the article applies the unit pulse response function matrix , derives the dynamical equations of multipoints impacts between the elastic system , and reveals the important role of the system dynamical characteristics in the impacts process .