cpid1

cours demodulation. traitement de signal analogique

说明：  利用FDTD方法模拟普通光子晶体光纤中模场变化的情况，为主程序，可以为学习FDTD模拟PCF的学习者提供一定参考和学习。(Ordinary FDTD simulation using photonic crystal fiber mode field changes in the situation, the main program, you can learn from FDTD simulation for the PCF to provide a reference of learners and learning.)

此模块很好的展现了将直流电转换为交流电并实现单位功率控制。(this model can clearly display the directly current converting the alternating current by controling the input power facror )

BOOST升压电路，输入电压为5v，输出电压为15v,采用无源控制进行系统的闭环控制，调节占空比(BOOST boost circuit the input voltage is 5v, the output voltage is 15v,with passive control for closed loop control system，and change the duty cycle)

短路电流计算MATLAB程序，适合电力系统分析学习(Short-circuit current calculation MATLAB program for power system analysis study)

已知两个序列x[n]=cos(n*pi/2), y[n]=ej*pi*n/4x[n],绘制X(ejw)和Y(ejw)和幅度和相角,说明它们的频移关系(The known two sequence x [n] = cos (n* PI/2), y [n] = ej* PI* n/4 x [n], draw x (ejw) and y (ejw) and amplitude and phase Angle, suggesting their frequency shift relationship )

图论，最小生成树，一种数学建模的实用方法，对你的比赛，和应用很有帮助(Graph theory, the minimum spanning tree，A good mathematical modeling tool, It is very helpful to your study MATLAB)

说明：  利用蚁群算法的改进算法实现图像分割，并与传统蚁群算法作比较(The improved ant colony algorithm is used to realize image segmentation and compared with the traditional ant colony algorithm.)

manual matlap GUI ingles

说明：  SVPWM是近年发展的一种比较新颖的控制方法，是由三相功率逆变器的六个功率开关元件组成的特定开关模式产生的脉宽调制波，能够使输出电流波形尽可能接近于理想的正弦波形。空间电压矢量PWM与传统的正弦PWM不同，它是从三相输出电压的整体效果出发，着眼于如何使电机获得理想圆形磁链轨迹。SVPWM技术与SPWM相比较，绕组电流波形的谐波成分小，使得电机转矩脉动降低，旋转磁场更逼近圆形，而且使直流母线电压的利用率有了很大提高，且更易于实现数字化。(SVPWM is a novel control method developed in recent years. It is a pulse width modulation wave generated by a specific switching mode consisting of six power switching elements of three-phase power inverters, which can make the output current waveform as close as possible to the ideal sinusoidal waveform. Space voltage vector PWM is different from traditional sinusoidal PWM. It is based on the overall effect of three-phase output voltage, focusing on how to obtain the ideal circular flux trajectory of the motor. Compared with SPWM, the harmonic component of winding current waveform is smaller, which reduces the torque ripple of motor, makes the rotating magnetic field more close to the circle, and improves the utilization ratio of DC bus voltage greatly, and makes it easier to realize digitization.)