少发故障的寿命分布拟合

模式识别问题最近邻算法的matlab实现，简单易懂(nearest neighbor pattern recognition algorithm to achieve the Matlab and easily understood)

计算粒子群算法的适应度函数，粒子群算法的程序和使用(The fitness function of pso is calculated,Particle swarm optimization program and use)

pwm整流器仿真模型，可控整流，自搭，好用(pwm rectifier simulation model, controllable rectifier, self-ride, easy to use)

说明：  NETEM 的预测试题(NETEM questions)

几种图像处理源码 程序代码说明 P0301：数字图像矩阵数据的显示及其傅立叶变换 P0302：二维离散余弦变换的图像压缩 P0303：采用灰度变换的方法增强图像的对比度 P0304：直方图均匀化 P0305：模拟图像受高斯白噪声和椒盐噪声的影响 P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波 P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波 P0308：图像的自适应魏纳滤波 P0309：运用5种不同的梯度增强法进行图像锐化 P0310：图像的高通滤波和掩模处理 P0311：利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理 P0312：利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理 (err)

为了了解系统某一状态时所处的时间，用积分方法从相平面获得时间信息。(In order to understand the time in which a state of the system from the phase plane using the following methods to obtain time information.)

1,某厂向用户提供发动机，合同规定，第一、二、三季度末分别交货40台、60台、80台．每季度的生产费用为 f=ax+bx^2（元），其中x是该季生产的台数．若交货后有剩余，可用于下季度交货，但需支付存储费，每台每季度c元．已知工厂每季度最大生产能力为100台，第一季度开始时无存货，设a=50、b=0.2、c=4，问工厂应如何安排生产计划，才能既满足合同又使总费用最低． 2,函数的输入为A,B两个矩阵，实现如下功能：从A矩阵中找出与B完全相同的子矩阵，并将该子矩阵左上角的位置保存到2*n的向量index中，最后函数返回A中所有与B完全相同的子矩阵的左上角坐标。(1, a factory to provide users with the engine, the provisions of the contract, first, second and third quarter, respectively Delivery 40 units, 60 units, 80 units. The production cost of each quarter the f = ax+bx ^ 2 ($), where x is the number of Taiwan-quarter production. If after delivery, the surplus can be used for delivery next quarter, but to pay the storage fees, each quarterly c. Factory known each quarter of the maximum production capacity of 100 units of stock in the first quarter, setting a = 50, b = 0.2, c = 4, asked how the factory should arrange production plan, in order to both meet the contract and the lowest total cost of . 2, the function' s input is the two matrices A, B, to achieve the following functions: to identify from the matrix A and B are identical sub-matrix, and a position in the upper-left corner of the sub-matrix is ​ ​ saved to the vector index of 2* n, The last function returns the coordinates of the upper left corner of the sub-matrices A)

频率辨识开环系统传递函数，传递函数为 ，试通过正弦扫频及Bode图拟合来辨识该传递函数，写出其设计思想和详细推导过程，并给出仿真程序和仿真结果(Open-loop frequency identification system transfer function, transfer function, the sine sweep test and the Bode plot by fitting to identify the transfer function, write its design and detailed derivation and simulation program and simulation results are given)

fusion svm_knn the output of svm will be the input of knn classifier

说明：  瑞利衰落信道模型，可以运用与ofdm信道估计和时域均衡(Rayleigh-channel-implementation-master)