数值分析的EULER法，使用大量的有限元法求解偏微分方程，使用matlab实现智能预测控制算法。- EULER numerical analysis method, Using a large number of finite element method to solve partial differential equations, Use matlab intelligent predictive control algorithm.

pn结模拟：一维PN结的模拟 ，有限元法 结合耦合法，新手求交流(Pn junction simulation: one-dimensional pn junction simulation, finite element method combined with coupling method, novice for communication)