codematlab-(1)-(1)

实现hough变换,matlb代码，图形界面(hough transform)

异步电机矢量控制仿真，采用svpwm生成脉冲(Induction motor vector control simulation, use of svpwm generated pulse)

boost converter with pid loops

利用蒙特卡罗法计算积分，感觉很有用，大家试试！(Using Monte Carlo method to calculate points, feel useful, we try!)

说明：  实现了GMSK调制方式下OFDM系统的仿真(Achieved a GMSK modulation mode OFDM system simulation)

this code finds out the array factor of ULA

这是一个关于双向介质瑞雷面波的正演模拟，效率非常的高，程序中用了衰减吸收边界条件，效果非常的好(This is a two-way medium Rayleigh wave forward modeling, its efficiency is very high, the program using the decay of the absorbing boundary conditions, the effect is very good)

电网暂态分析是保证电网稳定运行的重要手段。随着电网广域测量系统(wide-area management system， WAMS)的发展，电网形成了具有时空特性的高维海量运行数据。传统的电网暂态分析采用物理模型，用严格的数学公式关联维度之间数据，这种模型不能充分利用海量电网运行数据，造成资源浪费。从数据驱动的角度，首先分析 WAMS 数据的应用情况，考虑电网运行数据特点建立数据模型。然后利用随机矩阵理论(random matrix theory， RMT) 建立平均谱半径(mean spectral radius， MSR)评价指标，从整体上分析不同扰动对电网的影响。在整体分析电网运行状态的基础上，结合随机矩阵理论和时间序列分析(time series analysis， TES)建立量化评价指标，实现对扰动的影响程度分析和影响范围评估。(Power System Transient Stability Analysis Based on Random Matrix Theory)

SVM源程序，可以用来进行特征分类或提取 (MATLAB svm prepared by the source, can achieve a support vector machine for the feature classification or extract)

大功率分布式发电系统通常采用三相逆变器并网，由于三相逆变器系统参数耦合，传统方法设计的控制器算法复杂。在d。q坐标系下为双模式三相并网逆变器的独市和并网模式建立了数学模型．采用新的解耦方法，依据独立和并网模式控制系统超调量越小，模式切换过程中被控量的波动越小。切换过程就越平滑的原则。完成了两种模式的控制器设计，即分别应用积分环节、比例环节即可将独立模式和并网模式整定成典型的二阶系统，控制器设计简单．能取得优良的动、静态特性。仿真与实验验证了设计方法的正确性和可行性。(It is necessary to research on three—phase grid-connected inverter which a8 an important part of distributed generation．The parameters of three—phase inverter are coupling．The traditional design algorithm of the controller is complicated．The mathematicM models of stand—alone mode and grid—connected mode are established in d，q fhme． Based on the principle that the lower overshoot of the controller system，the smaller fluctuation of the controlled vailables， the smoother in transfer，controllers of two modes are designed separately，as integral and proportional regulators are separately added to stand-alone mode and g而d—connected mode．The controller has good dynamic and static char— acteristics．Simulation and experimental results varify the correctness and feasibility of the proposed method．)