file-matlab-mo-phong-he-thong-tach-kenh

求解allan方差，可以用于消除导航偏差，并可以根据所画曲线判断误差类别。(Solution of the allan variance can be used to eliminate the navigation deviation, and according to drawing curves to determine the error category.)

四旋翼无人机SIMULINK建模，PSO_SA优化PID参数 reverse.m 作用：将History表中的string形式的key值转换为赋给九个全局变量temp00， ... ,temp08运行sum1.slx，可以直接观察此组参数的波形。 History 作用：映射表，将一组参数（temp00, ..., temp08）映射到这组参数的ITAE指标。 trojectory.m 作用：定义一条路径并进行路径压缩，通过不断向sum.slx传递位置参数，控制无人机运动，并接受无人机运动过程，做出无人机运动位置图像。 sum1.slx 作用：从外部接受一组位置关系（x,y,z）,模拟无人机由原点(0,0,0)运动到该位置并保持稳态这个过程中无人机的位置变化，并向外部反馈。 PSO_3D.m 作用：调用sum3D.slx，通过PSO得到内循环最优解的参数。 sum3D.slx 作用：获取.m文件中设置好的全局变量的值，模拟内循环三个角度的变化。 PSO_History.m 作用：调用sum9D.slx，通过PSO得到外循环最优解的参数，此过程已被History表优化。 PSO_SA.m 作用：调用sum9D.slx，通过PSO得到外循环最优解的参数，此文件在PSO_History.m基础上被模拟退火算法优化(Four rotor UAV SIMULINK modeling, PSO_SA optimize PID parameters)

ode45源文件，貌似还不错哦，为什么要那么长(ode45 source file, looks like bad Oh, why did it take so long)

DYNAMIC SIMULATION OF ELECTRIC MACHINERY by Chee-Mun Ong, published by Prentice-Hall

单极性归零波形的功率谱，占空比为0.5(Unipolar zeroing wave power spectrum, the ratio is 0.5)

这个是关于小波变换，对图像增强介绍的文章，共大家参考研究、使用。(This is the wavelet transform, image enhancement described in the article on the total of your reference and use.)

精简适用的层次分析法的matlab程序代码，适合各种类型(Analytic Hierarchy Process to streamline applicable Matlab code, suitable for all types)

用matlab编写的欧拉方法求解常微分方程：数值分析中很经典的代码(a procedure of Euler method solve pde )

power_transfohyst,matlab仿真文件,电力电子、功率电子控制方面很有价值，调试通过(aspects of power_transfohyst, matlab simulation files, power electronics, power electronics control valuable debugging through)

Finding the Nearest Orthonormal Matrix In some appoaches to photogrammetric problems (perhaps inspired by projective geometry), an estimate M of an orthonormal matrix R representing rotation is recovered. It is then desired to find the “nearest’’ orthonormal matrix. While this two step approach — first finding a “best fit’’ matrix without enforcing orthonormality,and then finding the nearest orthonormal matrix — is not to be recommended, it may be of interest to find a solution to this problem nevertheless.