bpn

说明：  一个遗传算法算法，用于优化支持向量机的核函数参数及相关参数(A function about the parameters of svm)

计算一副图像的信息熵，如需计算多幅图像，只需修改名称即可(Calculating an image information entropy, calculated for multiple images, you can just change the name)

用matlab做的指纹识别算法，目前做到了增强，用的是linhong的算法(Matlab to do with the fingerprint recognition algorithm, the current did increase, the algorithm used is linhong)

针对实际工业生产中常见的多输入多输出时滞过程, 构造多变量Smith预估控制结构, 提出基于对象模 型伴随矩阵的解耦器设计方法. 通过对解耦后对象的幅频和相频特性分析, 获得对象的简化一阶数学模型. 根 据Smith预估控制结构闭环特征方程的特点, 利用Butterworth滤波器极点配置的原理, 对解耦后的多变量时滞过程 设计PI控制器. 结合实际过程中常见的不确定性, 分析了控制系统保证鲁棒稳定性的充要条件. 最后以实例验证了 本文所提方法的优越性.(The decoupling Smith control method is presented for multi-input-multi-output system with time-delays which are often encountered in practical engineering. A new method for designing the decoupler based on the adjoint matrix of the multivariable system model with time-delays is proposed. By analyzing the amplitude-frequency and phasefrequency characteristics of the decoupled model, the decoupled model is reduced to a first-order model with time-delay. According to the closed-loop characteristic equation of Smith predictor structure, a PI controller is developed by using the principle of pole assignment for Butterworth filter. Sufficient and necessary conditions for robust stability are derived for adaptive and multiplicative uncertainties commonly occurred in practice. Simulation results show the superiority of the proposed method.)

natural convection slution using matlab

三类目标的散射点模型，分别建立模型，并且画图，三个文件代表三类对象(Three types of target scattering point model)

The evolution the speed of wind according to time is modelized by a function analytical or generated by a statistical law starting the data of measurement for a given site. In a context of theoretical modeling, the profile of wind must satisfy two criteria: 1) The duration of the profile must be limited to reduce the time of simulation 2) The profile of the wind must be representative of the characteristics of the deposit (intensity, variability, statistical distribution…). In this study, we represented the evolution the speed of the wind, by a scalar function which evolves/moves in time, modelized in deterministic form by a sum of several harmonics. Profile of the wind simulated with a mean velocity of 8.2m/s.

This code perform the DCT and quantization on all the channels without any sub-sampling and for the compression of color images, they are first converted to the YCbCr color format and vice versa, use the function rgb2ycbcr and ycbcr2rgb.

时滞微分方程求解示例，他展示了如何用MATLAB数值工具箱来算系统的时间状态(DELAY DIFFERENTIAL EQUACTIONS EXAMPLES)

主要介绍配电网络合环模型的建立思路与算法研究(Closed Loop Distribution Network Model and Algorithm)