1

通过仿真实现同步电机模型，在MATLAB环境下实现(Achieve synchronous motor model by simulation in MATLAB environment to achieve)

这是包含pca和ppca等诸多源程序的工具箱，希望大家喜欢。(This is the PCA and PPCA includes many source code of the toolbox, I hope everyone likes.)

说明：  一段三维重建的MATLAB代码，拿来分享！(Three-dimensional reconstruction of the MATLAB code to be shared!)

此为一个合成孔径雷达的MATLAB仿真程序。(Synthetic aperture radar MATLAB simulation program.)

本文主要是介绍了EKF与UKF的基本原理及其区别，主要适合讲课和作业运用(This paper introduces the basic principles of its distinction of EKF and UKF for lectures and operating use)

c code for LHMs and using the matlab to plot the field

利用matlab模拟光纤中TE模的模式分布图。(Using matlab simulation model TE mode fiber distribution.)

实现频谱分析。能显示信号与频谱图。主要是对正弦信号和三角波进行一维FFT变换，得到频谱图。(To achieve spectral analysis. Shows the signal with the frequency spectrum. Sinusoidal signal and triangular wave one-dimensional FFT algorithm to obtain the frequency spectrum.)

梯度下降法是最早最简单，也是最为常用的最优化方法。梯度下降法实现简单，当目标函数是凸函数时，梯度下降法的解是全局解。一般情况下，其解不保证是全局最优解，梯度下降法的速度也未必是最快的。梯度下降法的优化思想是用当前位置负梯度方向作为搜索方向，因为该方向为当前位置的最快下降方向，所以也被称为是”最速下降法“。最速下降法越接近目标值，步长越小，前进越慢。(The gradient descent method is the earliest and most simple and most commonly used optimization method. The gradient descent method is simple to realize. When the objective function is a convex function, the solution of the gradient descent method is a global solution. In general, the solution is not guaranteed to be the global optimal solution, and the gradient descent method is not necessarily the fastest. The optimization idea of gradient descent method is to use the current position negative gradient direction as the search direction, because the direction is the fastest descending direction of the current position, so it is also called the steepest descent method. The faster the slowest descent approach is closer to the target, the smaller the step, the slower the progress.)

白噪声是工程中常用到的参考信号，程序通过白噪声的计算方法，可以得出2至7阶的白噪声序列，值得参考(White noise is commonly used to project the reference signal, the program is calculated through the white noise, can be drawn from 2 to 7 bands of white noise sequence)