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用MATLAB2008A编写的主成成分分析(MATLAB2008A prepared by Principal Component Analysis)

数据包络的程序，解决多目标决策，程序中有部分正文的注释，很适合初学者使用。(DEA procedure to solve multi-objective decision-making, program notes, some text, it is suitable for beginners.)

IEEE39节点系统下设置单点三相短路故障，运用能量函数法分析各支路暂态稳定性指标(I use the method of power function to analyse the IEEE39 system and get the Transient stability parameter of each line)

模糊综合评判计算程序 模糊综合评判的过程：1、灰色关联分析，求权重（程序见Relation）；2、模糊聚类分析，划分等级（程序见F_class）；3、隶属度计算，求隶属函数（程序见Subjection和subject）；4、模糊综合评判，计算各单元等级（程序见F_judge）。(Fuzzy comprehensive evaluation matlab code The process of fuzzy comprehensive evaluation: 1. Grey relational analysis to get weight (see Relation for program); 2. Fuzzy clustering analysis to divide ranks (see F_class for program); 3. Membership degree calculation to get membership function (see Subjection and subject for program); 4. Fuzzy comprehensive evaluation to calculate each unit grade (see F_judge for program).)

几个非线性系统学习的源码，包括李雅普诺夫指数，洛伦兹吸引子的画法，boost开关变换器，分叉图等等，适合非线性系统的学习仿真(Several of the source study of nonlinear systems, including Lyapunov exponents, Lorenz attractor painting, boost switching converter, bifurcation map, etc., suitable for simulation study of nonlinear systems)

说明：  EM最大期望算法：算法是在概率模型中寻找参数最大似然估计或者最大后验估计的算法，其中概率模型依赖于无法观测的隐藏变量。最大期望经常用在机器学习和计算机视觉的数据聚类领域。(EM algorithm)

QPSK在Rayleigh信道下的误码率的分析仿真。。(QPSK in Rayleigh channel bit error rate analysis and simulation. .)

LTI系统的频域分析：理论分析和代码实现(LTI system frequency domain analysis: theoretical analysis and code implementation)

说明：  利用matlab产生白噪声，是建模与辨识的基础程序(White noise generated by matlab is the basis for modeling and identification procedures)

说明：  用MATLAB模拟界面直观实现嫦娥1号,地球,月球之间的关系.(MATLAB simulation of an intuitive interface with the realization of Chang)