给定系统的传递函数，先进行系统降阶，因系统稳定性达到要求，故只需提高系统响应的快速性。使用超前滞后控制器即可。本程序就是使用超前滞后控制器改善系统性能。-Given the transfer function of the system, the first system to reduce the order, due to the stability of the system to meet the requirements, it is only necessary to improve