all_fem_codes

Ellipse of Concentration matlab function. The objective of the function is to compute and plot ellipse of constant probability density of error distribution.

产生m序列的源代码，为5级线性反馈移位寄存器，有兴趣的可以看看(Generate the source code of the m-sequence, five linear feedback shift register, interested can look at)

C# code for software engineer and student who want to learn

遗传算法优化神经网络的通用的matlab程序，希望对大家有帮助(Genetic algorithm optimization neural network)

HBM实行快速傅里叶变换，这是谐波平衡法中的一个重要的环节(Harmonic Balance Method is a very useful method in solving rotor dynamics, and fast fourier transform is an important part in it)

MUSIC一维算法的经典谱估计程序，已运算过，下载即可使用(MUSIC algorithm is a classic one-dimensional spectral estimation procedures)

把电源系统表示成线性传递函数或非线性控制模型，以此建立一种符号仿真模型(The power system transfer function expressed as a linear or nonlinear control model, in order to establish a symbolic simulation model)

explain simulink matlab pmsm motor

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.)

本程序采用MATLAB实现神经网络对股票预测的功能，带有实验数据以及输出结果(The program uses MATLAB neural network stock prediction to achieve the function, with experimental data and output results)