Chapter2

一、椭圆型偏微分方程 1. Helmholtz方程 及 特例（Possion方程， Laplace方程）； Helmholtz.m possion 2. 满足牛顿边值条件的Helmholtz方程；Helmholtz_Newton.m 二、抛物线型偏微分方程 1. 显式前向欧拉法 EF_Euler.m 2. 隐式后向欧拉法 IB_Euler.m 3. Grank-Nicholson法 Grank_Nicholson.m 4. 二维热传导抛物线方程 TDE.m 三、双曲线型偏微分方程 1. 显式中心差分法（一维波动方程） ECD_Wave.m 2. 显式中心差分法（二维波动方程） Wave2.m 四、有限元法 二维偏微分法方程（拉普拉斯方程） fem_basis_ftn.m Show_Basis.m fem_coef 五、使用GUI形式的偏微分方程求解工具求解偏微分方程（PDETOOL） 来自《精通Matlab科学计算》第三版(Numerical Methods for PDE)

信号数据预处理程序，包括低通滤波，带通滤波(Signal data preprocessor：including a low pass filter, band-pass filter)

说明：  利用Grubbs法的思想剔除数据集中的异常值;用Lagrange插值法对缺失数据补充(Delete outliers in a set by the Grubbs rule.)

说明：  讲述LTE关键技术及其发展趋势的详细说明，很有前沿性，很有可读性(About LTE key technologies and development trends in details, very cutting-edge, very readable)

使用LMI方法解决一个带约束的滚动时域优化问题(Constrained Receding Horizon Control Demonstration of Receding Horizon Control (RHC) using LMI)

一种基于调制域分析的过零检测算法改进，克服了传统过零算法不能应用于某些信号的局限，有MATLAB仿真(Zero-crossing detection algorithm based on improved modulation domain analysis, to overcome the traditional limitations of the zero crossing algorithm can not be applied to certain signals, there are MATLAB simulation)

视频检索，图像识别等方面的内容，用于matlab(Video retrieval, image recognition and other aspects)

Gepp algorithm. Developed By dr Kucinski from Warsaw Univeristy of technology.

说明：  <<现代信号处理教程>>(胡广书版)书中配套的matlab源代码。(this is a matlab code of the book called modem signal processing.)

Note that the energy-regenerative current is directly proportional to the motor speed and the braking torque. Hence, if the rider brakes his EV at a high speed, the surge current of the energy regeneration will damage the battery at the braking transient.