chazhi

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．)

一个SIR模型的Mathematica程序(SIR model of a Mathematica program)

神经网络实现旅行商优化计算,可在基础上改变坐标值，模式化较强(TSP optimization neural network)

二维FDTD 实现电磁场的二维分析。源代码。可以为FDTD初学者提供便利(Two-dimensional FDTD to achieve two-dimensional electromagnetic field analysis. Source code. FDTD beginners can facilitate)

适用于整数规划中的分枝定界方法，比较常用的算法。参数说明在程序中写的很清楚了，欢迎大家下载使用。(Integar Optimization.)

说明：  IOMETER软件使用说明，非常的的详细(IOMETER software instructions, very detailed)

气力清选，用于联合收割机中谷物与混杂物的分离，风速与分离式宽度的关系曲线，风速与落地位置的关系(Strength of the selected )

part 1 solve schrodinger......

优化算法，用于多目标非线性函数在约束条件下的求解，经典算法simplex演变而来(Optimization algorithm for solving multi-objective nonlinear function under constraints, the classical algorithm simplex evolved)

可以将分割完的子图像进行二值化，二值化效果很明显，易于下一步的分割识别(You can split end of the sub-image binarization, thresholding effect is obvious and easy to identify the next stage of segmentation)