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用PEG构造法生成LDPC监督矩阵的程序(With PEG construction method to generate LDPC matrix program oversight)

it is a pll (phase locked loop simulation)

在工程应用中 经常会遇到一些复杂的非线性系统, 这些系统状态方程复杂, 难以 用数学方 法准确建模。 在这种情况下, 可以 建立 BP 神 经网 络表达这些 非 线 性系 统。 该方法把未 知 系 统看成是一个黑箱, 首先用 系 统 输入输出 数据 训 练 BP 神 经网 络, 使网 络能 够表达该未 知 函 数, 然后就可以 用训练好的 BP 神经网络预测系统输出 。 本章拟合的非线性函 数为 y = x1^2+x2^2. 。 (In engineering applications often encounter some complex nonlinear systems, which complicated the equation of state, can not be accurately modeled mathematically. In this case, BP neural network can be established to express these nonlinear systems. The method of the unknown system as a black box, the first input and output data with systematic training BP neural network, the network can express the unknown function, then you can use the trained BP neural network forecasting system output. Chapter for fitting non-linear function y = x1 ^ 2+x2 ^ 2..)

一个程序，可以进行人脸识别和人眼跟踪，基于Matlab编写。(A program which can detect face and track eys, based on Matlab)

异步电机矢量控制的原理图，用matlab建立了一部电机的模型，对矢量控制进行了仿真。(Schematics, vector control of induction motor using matlab model of a motor, vector control simulation.)

In MATLAB, usually we use function bvp4c() to solve boundary value problem (BVP) of ODE. However, we also can use function ode45() to solve BVP of ODE too. However, ode45() needs all initial values at one point. Therefore we have to construct an auxiliary function, whose input argument is the missing initial value and the return output is the given boundary value, Then we can call function fsolve() to get the missing initial value. This method is particularly efficient it the ODE has one or more parameters. Also this method is essentilal for GNU Octave, because whose function bvp4c() is not programmed for parameter ODE yet.

广义最小方差自校正控制：在求解控制律的性能指标中引入对控制量的加权项，限制控制作用中的剧烈变化。(Generalized minimum variance self-tuning control: control the amount of weighted items, solving the performance of the control law introduced to limit the dramatic changes in the control action.)

这是一个完整的混沌理论中的相空间重构的程序，重构的是蝴蝶效应的了洛伦兹吸引子，压缩包里面有3部分程序，一个是数据，一个是主程序，一个是子程序。(This is a complete chaos theory of phase space reconstruction program, reconstruction of the butterfly effect of the Lorenz attractor, the archive there are three parts of the program, one for data, one main, one child program.)

分布式发电的PQ控制研究仿真，通过MATLAB/simulink进行仿真(PQ control of distributed generation simulation, simulation by MATLAB/simulink)

最短距离的最长 最短距离的最长 最短距离的最长 最短距离的最长 最短距离的最长 最短距离的最长 最短距离的最长(the least distance)