PMSM_PI2018a

说明：  异步电动机matlab/simulink仿真模型的完美搭建(Asynchronous motor matlab/simulink simulation model to build the perfect)

function [a,b] = pade(x,p,q) PADE Model a signal using the Pade approximation method ---- Usage: [a,b] = pade(x,p,q) The input sequence x is modeled as the unit sample response of a filter having a system function of the form H(z) = B(z)/A(z) The polynomials B(z) and A(z) are formed from the vectors b=[b(0), b(1), ... b(q)] a=[1 , a(1), ... a(p)] The input q defines the number of zeros in the model and p defines the number of poles.

binomia的PDF&CDF繪圖直接打開檔案RUN即可，生成圖像另有顏色標記(binomia the drawing of PDF & CDF can directly open the file RUN to generate the image and another color marker)

MATLAB函数参考 MATLAB函数参考 MATLAB函数参考(MATLAB function index MATLAB function index.doc MATLAB function index.doc)

《MATLAB程序设计教程》电子版，详细为初学者讲解matlab入门及学习。(The electronic of《Programming Tutorial of Matlab》)

基于蚁群算法的改进进行边缘检测，改方法可行，并且速度快，与传统算法进行比较。(Based on improved ant colony algorithm for edge detection, change the method is feasible, and fast, with traditional algorithms were compared.)

《图论算法及其matlab实现》的部分原始m文件，免去了自行键入的烦恼，很便捷(" Graph Theory Algorithm and Its Implementation matlab" m part of the original document, which eliminates the trouble of their own type, it is convenient)

数值积分和数值微分的相应方法，程序测试无误。(Numerical integration and numerical differentiation of the corresponding program to test and correct. )

本文首先介绍了几种LDPC码的编译码算法，同时推导了译码错误概率和密度进化 过程，讨论了信道参数的门限效应。接着对LDPC码二分图中长度为4的环进行了深入 研究，提出了一种LDPC码校验矩阵的消4一环生成算法，采用Matlab和VC++融合编程 方式，完成了此算法的程序设计。此算法不仅可生成二进制LDPC码的校验矩阵，并且 对算法修正后，也可生成多进制LDPC码的校验矩阵。采用此算法后可避免LDPC码译 码过程中的重复迭代，显著提高了短帧LDPC码的误比特率性能。同时对不同参数对 LDPC码性能的影响进行了仿真，得到了一些结论。最后，利用VHDL语言在复杂可编 程逻辑器件(CPLD)上完成了LDPC码编码器的硬件实现。另外，给出了LDPC码译 码器硬件实现的整体结构图，结合对数似然比域内的置信传播迭代译码(LLR-BP)算 法，对译码器的各个模块进行了详细阐述。(Research and implementation of LDPC coding and decoding technology)

storing a video webcam through webcam