中文说明：利用极点配置法解决现代控制问题，此程序对于理解控制的基本方法，控制效果分析，系统可观和可控性学习都有很大意义！
English Description：
Pole placement method to solve the problems of modern control, the basic way to understand this program control, the control effect analysis, and control systems considerable study has great significance!