将下面的一段话翻译为英语：为了改善战斗机超机动飞行控制品质采用预设性能控制方法对跟踪误差进行定量设计综合运用干扰观测器和改进动态面控制方法设计了预设性能鲁棒控制器。仿真研究表明飞机姿态角跟踪精度得到了进一步的提高并且保证了稳态性能和瞬态性能都能满足预先设定的要求进一步提高了飞控品质。

In order to improve the control quality of fighter jet's supermaneuverability, a preset performance control method is adopted to quantitatively design the tracking error. A preset performance robust controller is designed by comprehensively using disturbance observer and improved dynamic surface control method. Simulation studies show that the tracking accuracy of aircraft attitude angle has been further improved, and both steady-state and transient performance can meet the predetermined requirements, which further improves the quality of flight control.