windrose

可以将数据集按行任意调换顺序，给出了IRIS数据集及例子。(It can do any exchange data set in order, and give the IRIS data set and examples. )

Newton method.......this is a matlab code which solves a nonlinear function by newton-raphson method

S.J.Chapman《MATLAB编程》中文版修正版，此书是matlab入门的好教材，欢迎matlab初学者下载学习。(SJChapman " MATLAB Programming" modified version of the Chinese version, the book is good material matlab entry, please download matlab for beginners to learn.)

具有高分辨信号的空间谱估计-旋转不变技术(ESPRIT)

提高风力机将风能转化为机械能的效率，根据我国西北地区的风频风能曲线，用最优设计攻角沿叶片轴线的非线性分布修正传统Wilson算法，优化设计大型水平轴风力机叶片的气动性 能．该优化设计利用Madab优化工具箱，优化速度干涉因子的迭代计算，提高计算效率；考虑多翼型和变攻角等因素对叶片外形优化的影响，从结构及加工工艺角度修正翼型．通过对1．2MW风力发电机组叶片外形的气动性能计算和优化设计，结果表明该优化设计的有效性和可行性，可为风力机叶片外形设计提供参考．(Improve wind turbine wind energy into mechanical energy efficiency, according to the Northwest China wind frequency wind power curve, optimum design angle of attack along the blade axis of traditional non-linear distribution correction Wilson algorithm to optimize the design of the aerodynamic performance of the large-scale horizontal axis wind turbine blades . The Optimal Design Optimization Toolbox Madab optimized for speed interference factor iterative calculation to improve computational efficiency consider multi-airfoil and change the angle of attack and other factors on the blade shape optimization, airfoil from the structure and processing angle correction. By 1.2MW wind turbine blade shape aerodynamic performance calculation and optimization design, the results show that the effectiveness and feasibility of the optimized design can provide a reference for the wind turbine blade shape design.)

A three-phase motor rated 1 kW, 500 Vdc, 3000 rpm is fed by a six step voltage inverter. The inverter is a MOSFET bridge of the SimPowerSystems™ library. A speed regulator is used to control the DC bus voltage. The inverter gates signals are produced by decoding the Hall effect signlas of the motor. The three-phase output of the inverter are applied to the PMSM block s stator windings. The load torque applied to the machine s shaft is first set to 0 and steps to its nominal value (11 N.m) at t = 0.1 s. Two control loops are used. The inner loop synchronises the inverter gates signals with the electromotive forces. The outer loop controls the motor s speed by varying the DC bus voltage.

该代码利用matlab，根据各类边界条件的设定，实现了FDTD的算法。( This MATLAB M-file implements the finite-difference time-domain solution of Maxwell s curl equations over a three-dimensional Cartesian space lattice comprised of uniform cubic grid cells.)

使用matlab编写的一个小flash，运行M文件即可看到雪花飘舞(Using Matlab prepared a small flash, running the M-file to see the snow flying)

该程序是关于mimo系统中的信道容量的MATLAB程序(The program is a MIMO system channel capacity MATLAB program)

说明：  基于物理光学透镜成像原理，利用MATLAB语言编写了仿真程序，制作了GUI界面。(Based on the imaging principle of physical optical lens, the simulation program is written in MATLAB language, and the GUI interface is made.)