Parallel-axis

YNvd变压器的建模与仿真，是铁路同相供电系统的3/2变压原理，比较前沿的技术(YNvd transformer modeling and simulation of railway power supply system in phase 3/2 transformer principle, more cutting-edge technology)

用窗函数法实现了FIR数字滤波器的仿真，包括五种窗与低通，高通、带通、带阻四种类型的组和，可实现20种滤波器的设计(FIR filter design)

说明：  随机信号谱分析技术实现 随机信号谱估计及质量评价。 离散随机信号通过线性时不变系统时，系统所产生的响应。 功率谱估计的实现方法：自相关函数法、周期图法、Bartlett法、Welch法、MTM法、MUSIC法 (Random signal spectral analysis of random signal spectral estimation and quality evaluation. Discrete random signals through linear systems, the system generated response. Realization of the power spectrum estimation: autocorrelation function, periodogram, Bartlett law, Welch method, MTM method, MUSIC method)

飞行仿真模型,Matlab环境中运行，可实现快速仿真，性能分析(Flight simulation model, Matlab environment, run, fast simulation, performance analysis can be achieved)

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.)

说明：  folyd用来处理图论中最短路径问题。对传统的folyd算法进行了优化。(folyd to deal with the shortest path in graph theory problem. Folyd the traditional optimization algorithm.)

利用MATLAB对负指数序列进行作图，绘制出实部与虚部波形(MATLAB plotting the negative exponential sequence, to map out the real and imaginary part of the waveform.)

信道估计 算法 比较 很基础 很好的能够直接运行(Channel estimation algorithm compares very well be able to run the foundation)

matlab m file for induction motor

说明：  这是黑龙江大学自控理论杨易朋同学在最优估计课程当中用matlab编写的递推增广最小二乘算法!(This is the theory of Heilongjiang University, Yang Yi-controlled peer students in courses optimal estimate prepared by using Matlab recursive least squares algorithm to broaden!)