DCTtools

case study of multi-disciplinary modeling using MATLAB

用三阶龙格-库塔方法求解常微分方程初值问题的数值解的MATLAB主程序及例子。(MATLAB main program of Kutta method for solving initial value problems of ordinary differential equations numerical solution- using third-order Runge and examples.)

this is simmulation QPSK modulation in rayleigh channel

通过MATLAB对常出现的数学模型进行建模，并对相关数值计算方法进行讲解(Often appear through the MATLAB mathematical model for modeling and related numerical methods to explain)

IS算法， 类似于Zigzag算法， 但更加稳定(IS have more stable structure than Zigzag)

使用Matlab语言编写的俄罗斯方块游戏，参考学习借鉴。(Using the Matlab language of the Tetris game, reference and learn from.)

本Matlab代码是检验一个有向图是否是一个弱距离正则图(The Matlab code is to test a directed graph is a weak distance-regular graph)

基于 Simulink仿真的步进电机闭环控制系统分析分析转速输出曲线，提出了加入模糊速 度前馈控制环的系统改进方案 ，系统稳定性得到较大提 高。 ( Based on the Simulink closed loop stepper motor speed control system analysis output curve analysis, proposed adding fuzzy speed Former feedforward control loop system improvement program, system stability is greatly improved.)

说明：  画出系统的阶跃响应曲线，计算系统的上升时间，调节时间，超调量，稳态误差。。。(drawing the system s step response and comput its adjusting time \stastical error)

采用matlab编程语言，主要功能用于读取grd文件。(read grd document)