data2dlookup

说明：  C++的学习代码 共有50个 对于初学者很有用(Learning C++ code there are 50 very useful for beginners)

a code for photo changer

说明：  电力电子变换器采用重复控制策略。在反馈回路中设置一个内部模型，使该内部模型能够很好地描述系统外部信号特性，通过该模型的作用可使系统获得理想的指令跟踪特性，具有较强的扰动抑制能力。(Repetitive Control Strategy for Power Electronic Converter.An internal model is set up in the feedback loop, which can describe the external signal characteristics of the system well. Through the function of this model, the system can obtain ideal command tracking characteristics, and has strong disturbance rejection ability.)

This code expains bayesian particle swarm optimization method.All files have been written on matlab 2007a. This method has been explianed with various benchmark functions. This optimization method can be directly compared with other unconstrained optimization method like GA or pso for effieciency and speed.

matlab实例编程一百个源程序,包含了各个方面的实例编程，程序都经检验可以顺利运行，希望可以为初学matlab者提供帮助。(matlab examples of programming source 100, includes examples of all aspects of programming, procedures have been tested to run smoothly, I hope can provide to help novice matlab.)

说明：  基于能量检测和周期循环检测的认知无线电频谱检测matlab代码 用周期循环检测算法检测： 首先运行a.m程序，通过此程序运算得出循环频率a值； 再运行zhouqi.m程序，对a值进行确定，通过周期循环算法对信号进行检测； 用能量检测算法检测： 运行nengliang.m检测程序，使用能量检测对信号进行检测。 检测完毕，对检测性能进行分析。 (Cognitive radio based on energy detection spectrum detection matlab code)

图像处理，通过matlab实现视频图像的二值化等(Image processing, video images to achieve through the matlab binary, etc.)

Power Iteration Clustering projection Input: W - row-normalized affinity matrix v0 - starting vector conv - convergence threshold maxit - maximum number of iterations Output: vt - 1-d PIC embedding i - iterations ran t - runtime

变压器内部绕组匝间短路故障仿真，能模拟三相变压器三相短路、单相短路、两相短路和两相短路接地的情况，仿真得到短路电流波形。(Between the windings of the transformer internal short circuit fault simulation, can simulate three-phase transformer three-phase short-circuit, single-phase short circuit, two-phase short-circuit and two-phase short-circuit ground, simulated short-circuit current waveform.)

心电信号R波检测的函数，包括降采样，滤波，希尔伯特包络提取三个预处理步骤。其中R波根据阈值检测，相对不应期要根据具体信号适当调整.(ECG R-wave detection functions, including down-sampling , filtering, Hilbert envelope extracted three pretreatment steps. Wherein R wave detection based on a threshold , the relative refractory period should be adjusted according to the specific signal . )