diffraction-coefficient

用于对振动信号进行小波包分解，能量谱计算，从而进行后续分析(It is used to analyze the vibration data by wavelet packet decomposition, wavelet packet energy spectrum, and make further analysis.)

matlab实现的用fisher方法进行分类的任务(achieved using Matlab fisher method for classifying tasks)

要求使用继电自整定方法对其实施自适应PID控制。 1、选择采样时间0.1s，把对象离散化。 2、加继电（开关）控制，测量对象的Tc,Kc。 3、利用ZIEGLER-NICHOLS 公式表，确定PID参数。 4、实现闭环控制。 5、根据调节效果，修正PID参数。 (Require the use of relay tuning methods for its implementation of the adaptive PID control. 1, select the sampling time 0.1s, the discrete objects. 2, plus relay (switch) control, measurement object Tc, Kc. 3, using ZIEGLER-NICHOLS formula table, determine the PID parameters. 4, closed loop. 5, according to moderating effect, the amendment PID parameters.)

说明：  this is haar wavelet coding

Rough set theory can be regarded as a new mathematical tool for imperfect data analysis.The theory has found applications in many domains,such as decision support, engineering, environment, banking, medicine and others.

说明：  构建三层次的BP神经网络，通过多项指标预测含水层涌水能力，(Prediction of aquifer water inflow capacity based on BP neural network)

this is wonderful source code

说明：  利用遗传算法优化BP神经网络权值和阈值，然后进行训练，利用训练好的模型进行预估。附实例(The use of genetic algorithm to optimize BP neural network weights and thresholds, and then training, training a good use of forecast models. Attached examples)

说明：  FM(Frequency Modulation) using simulink in Matlab.

PSTD算法的matlab代码 计算二维空间 大尺寸下优于FDTD算法，速度优势随维数平方增长(PSTD algorithm matlab code FDTD algorithm is superior to the large size of the two-dimensional space, the speed advantage of growth with the square of the number of dimensions)