QuadraticQuadElementStiffness

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永磁同步电机模糊PID控制。含对比的PI控制的模型。实现了模糊控制算法，可以得到比单纯的PID更好的控制效果.(Fuzzy PID control of permanent magnet synchronous motor. Model PI-containing contrast control. Realization of fuzzy control algorithm can be better than a simple PID control.)

不同调制方法,和不同编码方式的信道仿真比较(different modulation methods, coding and different forms of channel simulation comparison)

BPSK平坦瑞利信道下的最大信噪比合并仿真的matlab程序，希望大家下载(BPSK Rayleigh flat channel with the greatest signal-to-noise ratio of Matlab simulation procedures in the hope that you download)

To find and estimate of the best solution and parameter in our problem we can use the evolutionary programming. PSO (particle swarm optimization) is an applicable method to catch this target. In these files I show the Simple PSO that it can be base of solve complicated problem, the code could run by MATLAB.

对三种pid控制方法进行比较仿真，从仿真结果可以看出彼此优劣，对学习PID及matlab仿真很有帮助。(Comparing simulation results from the simulation can be seen each other the merits of the three pid control methods, learning PID matlab simulation helpful.)

说明：  采用Coif小波变换在matlAB中对信号进行压缩降噪处理并进行比较(Wavelet transform using Coif matlAB compress the signal in the noise reduction and compared)

image sccaling. sccaling the image rd blue and green. its not good dont download

递归核最小二乘算法，来至MIT大学的wingate教授，含6个源码，有实例！(dict_init.m- Part of the dictionary implementation used by KRLS algorithm. Can stand alone. dict.m- Part of the dictionary implementation used by the KRLS algorithm. Can stand alone. krls_init.m- Kernel recursive least squares initializer. krls.m- Main KRLS function. Repeatedly called with new data points. krls_query.m- Query the resulting estimator. krls_example.m- An example script showing the different parts. )

数值分析算法-----复化三点Gauss-lengend公式求pi (Numerical analysis algorithms----- complex formula of three-point Gauss-lengend find pi)