电传民机低阶等效系统评定方法研究

The flying qualities rating method for civil fly-by-wire airplane based on the Low Order Equivalent System

先进客机普遍采用复杂的电传操纵系统,其闭环飞行品质评定适宜用低阶等效系统来进行评定。采用该方法对某典型的电传民机纵向短周期模态特性以及时间延迟进行了评估,结果表明,该方法对于Nz响应类型非常实用,所验证的控制律对飞行本体的飞行品质特性具有明显的改善作用。

Most moden civil airplanes are equipped complex fly-by-wire control system,and the flying qualities of such airplanes need to be rated using the Low Order Equivalent System（LOES）.The characteristics of the short-period oscillation and time delay of a typical civil airplane were assessed.The results show that the LOES is very suitable for the Nz response type of the civil fly-by-wire aieplane,and the control law are designed well since it can distinctly improve the flying qualities.