使用大量的有限元法求解偏微分方程，多元数据分析的主分量分析投影，包含位置式PID算法、积分分离式PID，微分方程组数值解方法，Matlab实现界面友好。- Using a large number of finite element method to solve partial differential equations, Principal component analysis of multivariate data analysis projection, It contains positional PID algorithm, integral separate PID, Numerical solution of differential equations method, Matlab to achieve user-friendly.