SD_alogorithm

排队问题仿真模型的代码，顾客到达时间和服务时间服从均匀分布。(Simulation model of the queuing code, the customer arrival time and service time uniform distribution.)

说明：  实现几何均值分解，应用在MIMO系统中实现于预编码(Achieve geometric mean decomposition, used in MIMO systems to achieve the pre-coding)

这是gsm系统中无线帧成型matlab仿真程序，上传给大家学习和参考。(This is a system of wireless frame molding gsm matlab simulation program, upload for everyone to study and reference.)

The first purpose of this paper is to present a brief introduction to the behavior and functioning of a PV device and write its basic equation, without the intention of providing an in-depth analysis of the photovoltaic phenomena and the semiconductor physics.

详细介绍了matlab插值与拟合方法，包括拉格朗日多项式插值、牛顿插值、分段线性插 值、Hermite 插值和三次样条插值和曲线的最小二乘拟合、多项式拟合方法、最小二乘优化所有程序均有相应的说明与应用实例(Details of the matlab interpolation and fitting methods, including Lagrange polynomial interpolation, Newton interpolation, piecewise linear interpolation Value, Hermite interpolation and cubic spline interpolation and least-squares curve fitting, polynomial fitting method, least squares optimization program has all the appropriate instructions and application examples)

matlab编程Newmark-β单自由度体系动力响应(Matlab programming Newmark- beta single degree of freedom system dynamic response)

EPS的目标电流求法。用一种新的方法求解，和普通的插值法有很大的差别。(Method to EPS target current. With a new method for solving, and the general interpolation method has a great difference.)

example simulation s of analysis of electrical machinery and drive systems - Pual C. Krause - Ex4

Neural Network with multiple inputs and multiple output with training data in file name Twod is trained using steepest descent algorithm.After training data ,we can test a new set of data

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.)