15-changweifenfangcheng-chuzhiwenti

交流伺服系统中的死区效应分析与补偿分析了逆变器的死区效应产生的原因及其对交流伺服系统控制性能产生的影响,指出死区补偿的关键 在于电流相位的获取,为了克服实际系统中电流零点的模糊性,提出了一种基于两相静止坐标系下的前馈死 区补偿方法. 该方法通过对三相输出电流一个周期内补偿电压进行傅里叶变换,发现仅需补偿1 ,5 ,7 次谐波 分量即可消除死区效应. 仿真和试验结果验证了这种方法的正确性和可行性.(AC servo system analysis and compensation of dead time effect of the inverter dead time effect causes the impact of the control performance of the AC servo system, and pointed out that the dead time compensation, the key lies in the current phase of the acquisition, in order to overcome the practical zero of the current ambiguity of the system is proposed based on the two-phase stationary coordinate system under the feedforward dead-time compensation method. by the offset voltage of the three-phase output current cycle Fourier transform is found only compensation 1, 5, 7 harmonic components to eliminate the dead time effect. simulation and experimental results verify the correctness and feasibility of this approach.)

切比且夫线阵幅度加权方向图计算,画出二位方向图,图示中标示出增益,副瓣电平等(Ratio and the linear amplitude weighted directional graph computation, draw two direction map, marked gain the diagram, the sidelobe level etc. )

"average" filter, "gaussian" filter, "wiener" filter and the "median" filter

单相PWM可控整流原理仿真，以及一些相关文件资料(Principle of single-phase PWM controlled rectifier simulation, as well as some relevant documents)

DTMF 系统的matlab实现，发送电话11位电话号码在接收端识别。(DTMF system matlab realize, send telephone 11 telephone numbers identified on the receiving end)

ant colony algorithm based on neural net work

MATLAB编写，可以实现掌纹图像的边缘提取，基于小波模极大值边缘提取。(Image edge detection.)

该程序可以是俄罗斯方块游戏。可以用键盘改变“方块”的方向而完成游戏。(The program can be a Tetris game. Can use the keyboard to change " box" in the direction of complete games.)

根据对所输入的png格式的真彩图像、小波类型（db9或haar）和相应的阈值进行了三级非标准小波harr或db9的分解和重构，从而达到了对原图像的压缩处理的 (Entered based on the true color of the png format images, wavelet type (db9 or haar) and the corresponding threshold for the three non-standard or harr wavelet decomposition and reconstruction of the db9 to achieve a compression of the original image processing)

说明：  移动通信中的自适应波形成，未毕业设计准备的代码(Mobile communication adaptive wave form, the code is not prepared for graduation)