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通信中常用瑞利衰落信道，给大家共享，欢迎大家下载(raydoppler)

凸分析基础 中文教材。纯粹这方面的资料不多（多为凸优化之类），中文的书籍更难找，有用该方面知识的同行多多交流。(Chinese textbook based on convex analysis. Little information in this area (mostly convex optimization and the like), Chinese books are harder to find, useful knowledge that more exchanges with colleagues.)

histogram eq mods a 3 approaches with using histeq

从网格划分软件Gambit读取1维网格的Matlab程序，来自《节点间断迦辽金方法》一书(Matlab program read from the meshing software Gambit one-dimensional grid, from the node discontinuous Galerkin method, " a book)

基于QR分解的岭回归函数，这个函数是非的有用是已经证明过的准确程序( center input and output, so we can estimate w0 separately since we don t want to shrink w0 )

Incremental Conductance: In the incremental conductance algorithm, we find the derivative of PV output power with respect to output voltage. The dP/dV is evaluated and the algorithm keeps checking this value and changes the duty cycle such that dP/dV=- I/V = 0. This is the point at which maximum power is transferred. If dP/dV is greater than zero, it means the PV is operating to the left of the MPP. If dP/dV is less than zero, it means the PV is operating to the right of the MPP. This method holds an advantage over the perturb and observe method since it is fast and does not oscillate around MPP. However, the method could experience instability due the involvement of the derivative.

说明：  利用该MATLAB程序可实现对一般电力系统的节点、支路及其损耗的潮流计算。(Using the MATLAB program can be realized on the general power system node, slip and loss of power flow calculation.)

sigma delta modulator

粒子群优化算法计算出的PSS优化模型，为四机两区模型(PSS optimization model calculated by particle swarm optimization algorithm)

基于干扰观测器的pid控制，非线性pid鲁棒控制，线性pid控制器设计(Disturbance observer based PID control, nonlinear PID robust control, linear PID controller design)