chap3matlab

基于Simulink的永磁同步电机的直接转矩控制的调速仿真，里面用S函数自建部分模块，加快了仿真速度。(Simulink-based permanent magnet synchronous motor direct torque control of the speed of simulation, which used self-built part of the S-function module to speed up the simulation speed.)

使用Matlab编程实现发送端信源编码（图像压缩）和接收端信源解码（图像重建），其中的编解码算法可采用基于DCT变换的JPEG图像压缩标准；测试图像加噪，然后对去噪后的图像进行压缩与重建，分析压缩性能；研究基于下采样和内插的图像压缩算法；可将8bit/pixel灰度图像扩展至24bit/pixel彩色图像，或者采用无损压缩算法对图像压缩。(Sender using the Matlab programming source coding (image compression) and the receiver source decoding (image reconstruction), one of the decoding algorithm can be used DCT-based JPEG image compression standard test image with noise, then the denoised image compression and reconstruction, compression performance analysis of down-sampling and interpolation based on image compression algorithm 8bit/pixel grayscale images can be extended to 24bit/pixel color images, or the use of lossless compression algorithms for image compression. )

课程设计中实现matlab的最优化设计，程序代码包括各种算法，如最速下降法 共轭梯度法，牛顿法，修正牛顿法，拟牛顿法，信赖域法，显式最速下降法， MDOMxw梯度投影法，修正G－N法，基本粒子群算法，带压缩因子的粒子群算法，权重改进的粒子群算法，ZMGGiit二阶粒子群算法等等。 (Curriculum design to achieve matlab optimization design, program code includes a variety of algorithms, such as the steepest descent method conjugate gradient method, Newton s method, modified Newton method, quasi-Newton method, trust region method, explicitly steepest descent method, MDOMxw gradient projection law, amendment G-N method, particle swarm algorithm, particle swarm algorithm with compression factors, weights improved particle swarm optimization, ZMGGiit second-order particle swarm optimization and so on. )

说明：  WGS84到BJ54坐标转换的四参数模型，可以求出四参数和转换坐标(WGS84 coordinate transformation to the BJ54 The four parameter model, four parameters can be calculated and converted coordinates)

说明：  自适应遗传算法matlab代码............对于系统辨识很好用的(Adaptive genetic algorithm matlab code ............ very good for the system identification used)

不同滚降系数条件下余弦滚降时域波形的比较。(Different roll-off factor conditions Cosine waveform comparison.)

二维云模型，matlab脚本编写，点开即可运行，效果很好(Two dimensional cloud model, matlab scripting, click open can run, the effect is very good)

主成分分析方法在各个变量之间相关关系研究的基础上，用较少的新变量代替原来较多的变量，而且使这些较少的新变量尽可能多地保留原来较多的变量所反映的信息一种方法。(Principal Component Analysis in the relationship between the various variables on the basis of the study, with fewer new variables replace the original more variable, but made them less a new variable as much as possible to retain the original variables that reflect more information methods)

说明：  实现一个以矩阵数为像素点的矩阵的任意角度的转动，程序简易，方便！！！(To achieve a number of pixel matrix of arbitrary angle rotation matrix, the program simple and convenient! ! !)

牛顿方法用于优化问题，其中包括最初等的牛顿方法。以及初始点不可行的算法。(Newton optimization)