bouncing-ball

根据手机号码判断城市，需要手机号码7字段对应城市的信息。(According to cell phone number to determine the city, needed a mobile phone number 7 corresponds to the city' s information field.)

说明：  用四阶古典RK方法解初值问题： 取h=1/8。每隔8步打印出数值解与真解的值（u(t)=(t^2)/2-t），画出它们的大致图像，并对产生的结果做出解释。 (with four bands classical RK method for initial value problems : from h = 1/8. Every eight-step numerical solution print and in the true value (u (t) = (t ^ 2)/2-t), they generally draw the images, as well as the results of an explanation.)

总体平均经验模态分解适合于分析非线性、非平稳信号序列，具有很高的信噪比。(The overall average empirical mode decomposition process)

energy detection algorithm.

说明：  该资料主要讲matlab编程技术，内容不错，适合初学者学习。(The information is mainly talk about matlab programming, content, good, suitable for beginners to learn.)

it s un neural network Elman with train sim..

这是一个matlab工具箱，里面有五个常用的工具箱，为我们matlab编程提供了更加快速和准确的方便。希望大家能喜欢。(This is a matlab toolbox, there are five common toolbox, matlab programming for us to provide the more rapid and accurate and convenient. Hope you can like. )

说明：  这是matlab编写的射线网格法追踪，用于追踪波的射线轨迹(This is prepared matlab ray tracing grid method, used to track wave ray tracing)

神经网络PID控制算法的实现，相比于PID，神经网络PID具有更好的控制效果。(Neural network PID control algorithm, compared to PID, PID neural network has better control effect.)

说明：  pmsm自抗扰控制的S函数编写程序，基于MATLAB编写(The S-function program of PMSM ADRC is based on MATLAB)