lvbo

对比例阀气动伺服系统的matlab仿真，仿真结果良好(Proportional valve for pneumatic servo system, matlab simulation, simulation with good results)

说明：  模拟计算一维热传导的问题,热传导的边界条件是两端绝热. (Simulation of one dimensional heat conduction problem, heat conduction across the boundary condition is adiabatic.)

节点导纳矩阵 电力系统仿真会用到 自己变得 大家学习(Node admittance matrix of power system simulation will use their get them to learn)

用于海洋科学中计算地球流的一系列matlab程序，非常实用，主要包括地转流输运、地转流速( Collection of functions to calculate Geostrophic Currents # Contents of ocean/geostrophy geo_transp - function [ct,pv,lav,gpa1,gpa2] = geo_transp(p1,t1,s1,la1,p2,t2,s2,la2,pr) geo_veloc - GE_VE [v,pv,lav,lov] = geo_veloc(p1,t1,s1,la1,lo1,p2,t2,s2,la2,lo2,pr) geovel - V = geovel(s,t,p,lat,lon) geovel2d - Calculation of geostrophic velocities geovel3d - Calculation of geostrophic velocities geovelrho - V = geovelrho(rho,p,lat,lon) geovelsva - V = geovelsva(sva,p,lat,lon) gp2uv2d - Calculation of geostrophic velocities. gp2uv3d - Calculation of geostrophic velocities )

说明：  初学微分方程数值解很实用的书籍，例子很详细，并附有程序。(Good book for student who wants to study tne numerical solution of differential equations)

This book is for battery specification

用matlab生成正态随机数,用于数理统计及概率中(to produce the random matrix with matlab)

对一副bmp格式的图像，可是是灰度也可以是彩色图像进行图像的亮度变换，实现图像亮度增减(Bmp format on an image, but is gray in color images can also be the brightness of the image transformation, change of image brightness)

：滤波 fs=400 采样频率,必须大于两倍基带信号最高频率 ts=1/fs 采样时间间隔 T=5 时间窗大小 t=0:ts:T (hf1=zeros(1,N) hf1(f<=B1&f>=-B1)=1 y1=hf1.*fftshift(y) figure subplot(211) plot(f,abs(fftshift(y))/N,f,hf1, r-- ) axis([-fs/2,fs/2,0,1.2]) title( 原信号频谱 ) xlabel( f /Hz ) subplot(212) plot(f,abs(y1)/N) title( 低通滤波，截止频率90Hz ) xlabel( f /Hz ))

说明：  用于各种潮流计算和最有潮流计算的matpower 中文手册(For various flow calculation and the most current computing matpower Chinese manual)