cc_abscissa

PID Design Method for DC Motor Speed Control

最新推出的无线射频芯片，可用软件编程实现信道的选择，空旷地带最远1000米。(The latest to release of rfid chip, usable software programming realization channel choice, open field furthest 1000 meters. )

已知一个LTI系统的差分方程为： y[n]-1.143*y[n-1]+0.4128*y[n-2]=0.0675*x[n]+0.1349*x[n-1]+0.0675*x[n-2] 初始条件y(-1)=1,y(-2)=2，输入x(n)=u(n)，计算系统的零输入响应 (known LTI system of a differential equation : y [n]-1.143* y [n-1] 0.4128* y [n-2] x = 0.0675* 0.1349 [n]* x [n-1] 0.0675* x [n-2] initial conditions y (1) = 1, y (2) = 2, input x (n) = u (n), we calculate the zero input response)

Region Growing by Dirk-Jan Kroon

对图像进行降维，用少量图像的主成分去描述整个图像以提高系统的效率。(Reduce the dimensions of the image, with a small amount of the principal component image to describe the whole image to improve the efficiency of the system.)

说明：  matlab中的关于微分方程实验方面的例子和程序(matlab in the example of experiments on differential equations and procedures)

多载波系统中的交调失真，输入信号是频率在11Hz和 14Hz的双音带通信号。(Multicarrier system intermodulation distortion, the input signal is frequency 11Hz and 14Hz dual tape communication number.)

表示出两帧图像间各个像素点的相对情况，多抽样率信号处理，GPS和INS组合导航程序，本科毕设要求参见标准测试模型，虚拟力的无线传感网络覆盖，LDPC码的完整的编译码。( Between two images showing the relative circumstances of each pixel, Multirate signal processing, GPS and INS navigation program, Undergraduate complete set requirements refer to the standard test models, Virtual power wireless sensor network coverage, Complete codec LDPC code.)

matlab 关于股票单项指标滚动预测神经网络源代码。大家可以根据自己的回归预测问题，进行改写，。只用于研究ELMAN神经网络的一般使用，不适合用于投资分析，误差较大，切忌。切忌。(a code of Elman netural network about predicating the stocks price.. it is free and easy..)

matlab中电气化铁路上每1km长的牵引网的等效阻抗模型。(matlab in every 1km long electrified railway traction network equivalent impedance model.)