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直流电动机的转速控制实例，采用传统PID控制算法。(DC motor speed control example, using the traditional PID control algorithm.)

some source code on nichols and bode using matlab

FFT 仿真程序结合modesim使用，matlab原码(FFT simulation program with modesim use, matlab original code)

说明：  计算一个方柱的散射的波形，并求其RCS。方柱的网格总数是N=500个，时间步为1200步。网格尺寸为lamda/18,时间间隔是ddx/2*c，c为光速。脉冲源位于中心。方柱边长为7*lamda。并与相同尺度的球的散射场进行对比(Calculate the scattered waveform of a square column and find its RCS. The total number of grids of the square column is N=500 and the time step is 1200 steps. The grid size is lamda/18, the time interval is ddx/2*c, and c is the speed of light. The pulse source is at the center. The side of the square column is 7*lamda. And compare the scattering field of the ball of the same scale)

this file contain matlab code for advance filter design

说明：  在机车车辆动力学中，用matlab获得轮轨接触点(get the contact point of wheel and rail )

arduino_AFMotor库，用于控制连在ARDUINO上的电机(This is the August 12, 2009 Adafruit Motor shield firmware with basic Microstepping support. Works with all Arduinos and the Mega For more information on the shield, please visit http://www.ladyada.net/make/mshield/ To install, click DOWNLOAD SOURCE in the top right corner, and see our tutorial at http://www.ladyada.net/library/arduino/libraries.html on Arduino Library installation)

内螺旋覆盖搜索的一个算法实现，运行为plotdmap（a,b,c,d）a,b,c,d为数字，a,b为栅格地图的长宽，c为搜索目标的数量，位置自动随机出现杂地图上，d为搜索车辆的数量，位置分布在地图最外围。(Cover a spiral search algorithm, run for the plotdmap (a, b, c, d) a, b, c, d for the number, a, b for the grid map of the length and width, c is the number of search targets, location Auto randomly mixed map, d the number of vehicles for the search, location map of the distribution in the outermost.)

说明：  数字信号处理源代码，基于MATLAB的。

Calculate SNR for designing SDM