cthd39-40

神经网络变量筛选—基于BP的神经网络变量筛选,MATLAB的经典算法(Neural network variable selection- based on BP neural network variable selection, MATLAB classical algorithm)

电力系统暂态稳定程序，可以进行暂态稳定计算,用平面波展开法计算二维声子晶体带隙,用MATLAB实现动态聚类或迭代自组织数据分析。( Power System Transient Stability Program, can be transient stability, Computation Method D phononic bandgap plane wave, Using MATLAB dynamic clustering or iterative self-organizing data analysis.)

余割函数方向图的天线设计，其中给出了设计原理和实物图。(Cosecant pattern of the antenna design, which gives the design principle and the physical map.)

Traffic engineering calculate blocking probability

用龙格库塔法对迟滞进行建模（JA模型），可运行(Longge kuta method of super hysteresis expansion material modeling, can run, have the result)

Tests the switch statement.

pso-pid量子粒子群算法qpso的matlab代码以及pid控制器在matlab中的仿真程序(Pso- pid quantum particle swarm optimization (qpso matlab code and pid controller in matlab simulation program)

说明：  本程序利用平均周期图法（bartlett法）对信号进行功率谱估计，指定输入响应信号，根据实际情况调整参数，输出功率谱图(The program uses the average periodogram method (bartlett method) on the signal power spectrum estimation, specify the input response signal, adjust the parameters according to actual situation, the output power spectrum)

利用DFT实现两轮信号相位差计算，包含谐波信号污染，白噪声信号污染分析(Phase difference between two signals to achieve the use of DFT calculations, the signal containing harmonics pollution, contamination white noise signal analysis)

it is very useful paper for multilevel converter