power spectrum density function meaning in Chinese
功率谱密度函数
Examples
- Analysis of evolutionary power spectra density function of ground motion induced by blasting seismic
爆破地震地面运动的演变功率谱密度函数分析 - To solve it , the differential equation set is transformed by fourier transform and the dynamic differential equation in the form of matrix is educed . the calculation formulas of frequency response function of vehicle vibrating system , acceleration power spectrum density function are put forward
用分析力学法建立整车动力学模型，推导出以矩阵形式表示的运动微分方程，并通过傅氏变换给出汽车动力学系统的频率响应函数、加速度功率谱密度函数的计算公式。 - The random excitation of the four wheels is used as the input of this system . the changing rule of vertical displacement , three directions of acceleration power spectrum density function of person - chair system of model ca - 141 and etc . in the frequency domain is simulated using matlab . the rationality of the model is analyzed and validated by comparing of relevant testing results and theoretic analysis
以频域内四轮随机激励作为系统输入，用matlab仿真低地板城市客车等三种车型人椅系统三向加速度功率谱的变化规律，逐项分析车速、悬架刚度与阻尼参数变化对车辆平顺性的影响，通过与相关研究结果的比较及理论分析验证了模型的合理性。 - In the first session the fans vibration on - line monitoring system is realized with vc language , also compile auto power spectrum density function , cross power spectrum density function , autocorrelation function and cross correlation function etc spectral analysis function to carry through simple offline fault diagnosis
首先用稳定性强、扩展性好的vc + +语言开发了通风机振动在线监测系统，并编写了自功率谱密度函数、互功率谱密度函数、自相关函数和互相关函数等频谱分析函数来进行简单的离线故障诊断。