PSD

matlab tutor for chinese. and in chinese.so who need it I think should be Chinese.

产生不同频率、幅度的正弦波信号，叠加后，设计低通、带通滤波器进行正弦信号的谱分析及提取。(The sine wave signals with different frequencies and amplitudes are generated. After superposition, the low-pass and bandpass filters are designed for spectrum analysis and extraction of sinusoidal signals.)

说明：  离散型永磁同步电机滑模控制，采用锁相环实现角度估算，角度误差低，效果好。(PMSM_SMO_PLL,test is good.)

可以用来识别包装系统的总体参数以及原响应函数的初始相位和振幅(Packaging systems can be used to identify the general parameters as well as the original response function of the initial phase and amplitude)

说明：  李雅普诺夫稳定性分析，包含几种典型用例，调整ode45中背调函数，即可实现不同案例的李雅普诺夫稳定性分析。(Lyapunov stability analysis, including several typical cases, can achieve Lyapunov stability analysis of different cases by adjusting the back tone function in ode45.)

说明：  cootes提出的ASM算法的matlab实现。在cootes用于课堂使用的源代码的基础上改写。改正了原来代码中的一些错误，加入了方便使用的样本训练标注保存环节。供图像分析处理，模式识别，人工智能研究者使用。(the ASM Algorithm Implementation of Matlab. Cootes used in the classroom use of the source code on the basis rewritten. To correct the original source of some mistakes, joined the ease of use of training samples preserved tagging links. For image processing, pattern recognition, artificial intelligence researchers.)

说明：  上传RBF源程序，希望能对大家学习有所帮助，并请提出宝贵的意见和建议！(upload source, in hopes of learning we can help, and requested the valuable advice and suggestions!)

OFDM用4QAM调制，simulink仿真(OFDM with 4QAM modulation，with simulink)

摘　要:针对茄子图像的灰度和颜色特点,利用MATLAB中丰富的图像处理函数,分别进行了色差分割和色调分割。在 色调分割中,采用了自动选取阈值的Otsu法。在去除残留噪音的处理中,采用标注的方法对二值图像的各连通区域进行面积 统计。保留最大面积的区域,从而使分割效果大大改善。利用多参数来衡量分割效果,使评价做到最大程度的客观、合理。(Based on the gray- level and color characteristics of eggp lant image, hue and color- difference segmentation were conducted by using the rich image p rocessing functions embedded inMATLAB. The auto threshold- adap tivemethod ofOtsu operation was specially used for hue segmentation. And upon the elimination of the residue noise, labelingmethod for statistical calculation was introduced for the connected regions of the binary image. Themaximum areaswere p reserved to imp rove segmentation effects. In addi2 tion, multi- indiceswere app lied to assess the effect of segmentation, in order to get impersonal and reasonable assessment)

本是一个含PID控制器的线性控制系统的程序(this a PID controller with the linear control system procedures.)