matlab_learning1

Wind energy conversion based doubly fed induction generator controlled by direct matrix converter

实现模糊PID控制仿真，非常有用，编程人员只需简单修改参数即可。(Fuzzy PID control simulation, very useful, programmers can simply modify the parameters.)

产生右图所示图像f1(m,n)，其中图像大小为256×256，中间亮条为128 ×32，暗处=0，亮处=100。对其进行FFT： ① 同屏显示原图f1(m,n)和FFT(f1)的幅度谱图； ② 若令f2(m,n)=（-1）m+n f1(m,n)，重复以上过程，比较二者幅度 谱的异同，简述理由； ③ 若将f2(m,n)顺时针旋转90 度得到f3(m,n)，试显示FFT(f3)的幅 度谱，并与FFT(f2)的幅度谱进行比较； ④ 若将f1(m,n) 顺时针旋转90 度得到f4(m,n)，令f5(m,n)=f1(m,n)+f4(m,n)，试显 示FFT(f5)的幅度谱，并指出其与FFT(f1)和FFT(f4)的关系； ⑤ 若令f6(m,n)=f2(m,n)+f3(m,n)，试显示FFT(f6)的幅度谱，并指出其与FFT(f2)和 FFT(f3)的关系，比较FFT(f6)和FFT(f5)的幅度谱。(Generating an image f1 (m, n) shown in the figure, wherein the image size is 256 256, the intermediate light bar 128 32 0 = dark, bright Department 100. Its FFT: ① screen display picture f1 (m, n) and the FFT (f1) of the amplitude spectrum ② If so f2 (m, n) = (-1) m+n f1 (m, n), repeat The above process, comparing the amplitude spectrum of the similarities and differences between the two, brief reasons ③ If f2 (m, n) 90 degrees clockwise to get f3 (m, n), try to display FFT (f3) the amplitude spectrum and with the FFT (f2) comparing the amplitude spectrum ④ If f1 (m, n) obtained by 90 degrees clockwise f4 (m, n), so f5 (m, n) = f1 (m, n)+f4 (m, n ), try to display FFT (f5) amplitude spectrum, and pointed out its relationship with the FFT (f1) and FFT (f4) of ⑤ If so f6 (m, n) = f2 (m, n)+f3 (m, n) and try to display the FFT (f6) amplitude spectrum, and pointed out its relationship with the FFT (f2) and FFT (f3), comparing FFT (f6) and FFT (f5) amplitude spectrum.)

说明：  massive mimo multiwave

说明：  支持向量机（Support Vector Machine, SVM）是一类按监督学习（supervised learning）方式对数据进行二元分类的广义线性分类器（generalized linear classifier），其决策边界是对学习样本求解的最大边距超平面（maximum-margin hyperplane）(Support Vector Machine, SVM)

说明：  本资源为双馈风机DFIG的建模，其中包括定子直接从电网以恒定的振幅和频率提供三相电压。转子还由三相电压供电，这些三相电压在稳定状态下具有不同的幅度和频率，以便达到电机的不同运行条件（速度，转矩等）。本资源在intin.m文件中给了具体的参数，可以模拟出具体的仿真结果，使用者也可以自己改变参数来模拟仿真自己的结果。(This resource is for modeling DFIG of doubly fed wind turbine, which includes the stator providing three-phase voltage directly from the grid at constant amplitude and frequency. The rotor is also powered by three-phase voltages, which have different amplitudes and frequencies in steady state to achieve different operating conditions (speed, torque, etc.) of the motor. This resource provides specific parameters in the InTin. M file, which can simulate the specific simulation results. Users can also change the parameters to simulate their own results.)

MATLAB经典教程—从入门到精通的pdf，很好的一本书(MATLAB classic guide- from entry to the proficient pdf good a book)

使用robert算子 寻找图像边界的方法 解决的是一道国赛的题目 找圆心给出坐标(find the edge of some part of pictures by using robert method the code solves a problem of finding the centre of circle in CUMUM )

PSO算法最小化配网建设成本，希望对初学者有用(PSO algorithm to minimize the cost of distribution network construction)

digital processing in matlab