benqao_v28

使用最小二乘法平差，进行圆柱拟合，两次平差可以控制初始值尽量使结果收敛(application of TSL to fit for cylinder, control of start data to get a good result)

hht和emd源代码，可以直接出图像，MATLAB开发环境(hht and emd source code, the image can be directly)

Any change to the value of Mresults in immediate and phase-continuous changes in the output frequency

包括脚本文件和函数文件形式，包括调制，解调，信噪比计算，针对EMD方法的不足。( Including script files and function files in the form, Includes the modulation, demodulation, signal to noise ratio calculation, For lack of EMD.)

Matlab实现光线跟踪算法，建模光线折射、衰减、像差(Matlab to achieve ray tracing algorithm, modeling of light refraction, attenuation, aberrations)

filename: rayleigh_fading.m function: rayleigh fading input parameters: multipath_ID (user, multipath) output parameters: envelope read files: no generate files: no call functions: no called by: wireless_UL, wireless_DL Execution Time: case 1: 29/100 Seconds(100 times called)(N=25) case 2: 4.4/100 Seconds(100 times called)(N=25) Sun Jianxun, Apr., 02, 2001

L1范数正则化最小二乘问题求解器，stanford大学Boyd教授出品。(Simple Matlab Solver for l1-regularized Least Squares Problems)

东南大学 电子学院 信号与系统实验 matlab 代码(Southeast University, Electronic Science and Engineering, signal and system, matlab)

说明：  利用PQ分解法进行电网潮流计算，得出待求解电网的各PQ节点的有功功率和无功功率，各PV节点的有功功率和节点电压(Make use of power flow PQ decomposition method calculated the PQ to be solved for each grid node of active and reactive power, active power and node voltage of each PV nodes.)

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.)