SA-SVM

计算井筒注入或者生产过程中的摩阻系数，可用于井筒压力分布预测(Wellbore fraction coefficient calcuation method)

动态因子copula模型建模并模拟分析系统性风险(Dynamic Factor Copula Model Modeling and Simulating Analysis of Systematic Risks)

fluent教程（中文帮助+UDF完全使用手册）个人由英文文档翻译，仅供参考(Fluent tutorial (Chinese help +UDF complete manual) personal English translation of the document, for reference only.)

说明：  利用TOA与最小二乘法直接求解（具有独立创新性），TDOA是利用拉格朗日法求解，而且里面的定位图解做得特别好，分别有一点定位，多点定位的的三维视觉图。(TOA is directly solved by least squares method(Innovativeness),TDOA is solved by Lagrange's method.)

说明：  400KW光伏参与并网，4组光伏模组共同输出400KW的功率(400KW photovoltaic participates in grid connection, 4 sets of photovoltaic modules jointly output 400KW power)

说明：  能够实现充电仿真,具有电压电流反馈，能够实时观测蓄电池soc等参数(It can realize charging simulation, has voltage and current feedback, and can observe battery SOC and other parameters in real time)

说明：  并网逆变器通常采用L滤波器，虽然结构和控制简单，但是随着功率级别的增加会地带来体积重量增大等问题。LCL滤波器适用于功率较大的场合。(Grid-connected inverters usually use L filters. Although the structure and control are simple, problems such as volume and weight increase with the increase of power level. The LCL filter is suitable for occasions with large power.)

求解二维拉普拉斯方程的matlab程序的实现(Solving two-dimensional Laplace equation)

本文首先分析了永磁同步电机矢量控制的发展概况，然后从机电能量转换的角度出发，解释三相永磁同步电机的机电能量转换原理，推导拉格朗日运动方程。此外，列写出永磁同步电机在三相静止坐标系和dq坐标系下的数学模型。基于Simulink建立了转速电流双闭环矢量控制系统的仿真模型，通过对仿真结果分析，验证了永磁同步电机矢量控制系统性能的优越性。(This paper first analyzes the development of permanent magnet synchronous motor vector control, and then explains the electromechanical energy conversion principle of three-phase permanent magnet synchronous motor from the perspective of electromechanical energy conversion, and deduce the Lagrange motion equation. In addition, the mathematical model of permanent magnet synchronous motor (PMSM) in three phase stationary coordinate system and dq coordinate system is listed. Based on Simulink, a simulation model of speed and current double closed loop vector control system is established. By analyzing the simulation results, the performance of PMSM vector control system is verified.)

说明：  通过对导热方程的推导，利用有限体积法，在matlab进行编程模拟，阐述对流传热的机理。(Based on the derivation of heat conduction equation, the finite volume method is used to simulate in MATLAB, and the mechanism of convective heat transfer is described.)