Signals-and-systems

利用超声导波的形势，测量骨头的厚度，从而判断骨头是否患有骨质疏松症(ultrasonic guided wave measurement in bone)

Chebyshev和Legendre展开(Chebyshev and Legendre expansion)

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.)

program to get an image in matlab

基于wilson法的风力机叶片设计，应用MATLAB中fmincon函数对轴向和周向诱导因子求解(Wilson law-based wind turbine blade design using MATLAB fmincon function of the axial and circumferential inducible factor solution)

用matlab实现广义最小二乘的数值运算，欢迎大家参考。(Achieve numerical computation of generalized least squares)

桌面精灵设计报告，很好很完整的的设计文档！！！(桌面精灵设计报告，很好的设计文档！！！)

用PCA在一组数维中找到主十得到主元分析，用于MACHINE LEARNING 中初步学习者(use pca find the principle component int the dataset)

现代通信系统使用MATLAB（刘树堂，内有代码）(Modern communication systems use MATLAB (LIU Shu-tang, there are code))

说明：  MATLAB实用程序百例非常的实用，尤其是在图像处理方面的。(MATLAB utility hundred cases, very practical)