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电气化铁路接触网过分相过电压的matlab仿真研究，对于掌握并治理过电压具有积极的作用(Simulation study of MATLAB electrified railway contact net over phase overvoltage, plays a positive role in control and governance over voltage )

管壳式换热器中的热量计算，基于matlab实现(Heat exchanger calculation)

说明：  基于传递矩阵的方法，计算转子动力学系统临界转速及振型(Critical Speed and Vibration Mode of Rotor Dynamics System Based on Transfer Matrix Method)

上传的MATLAB代码是music算法在线阵和空间任意阵列下的形式，也可以将两者进行对比。(Upload music algorithm MATLAB code is any line array and space under the form of an array, you can also compare the two.)

改程序精确计算了球体的mie级数，用matlab编写(Procedures for accurate calculation of the sphere change the mie series, written with matlab)

数字信号处理中关于快速傅立叶变换以及典型例题的matlab实现代码(Digital signal processing on the fast Fourier transform, as well as a typical example of the realization of matlab code)

很好用的介绍差分方程和数值微分的PPT，希望对大家有帮助，欢迎下载。(Nice introduces difference equation and numerical differential s PPT. We want to help, welcome to download.)

说明：  function [Sx,f,alpha] = Sa(s,fs,M,N,read_f,del_f) 计算信号的循环谱 [Sx,f,alpha] = Sa(s,fs,M,N,read_f,del_f) 输入： s 序列 fs 采用频率 M 滑动频率窗长 N fft计算点数 read_f 可视频率（一般为载频的整数倍） del_f 可视频率间隔 输出： Sx 信号的循环谱 f 频率轴 alpha 循环频率轴(Cyclosationary Spectrum)

matlab 课程实习 第六章 答案 附源码(Chapter Answers with source matlab internship programs)

说明：  matlab转子系统仿真程序，可用于计算动力失稳，判断系统稳定性(Matlab rotor system simulation program)