飞机横航向模态模型的选择  

The Model Selection of Aircraft Lateral Modes

作　　者：程韶军[1] 邓建华[1] 

机构地区：[1]西北工业大学

出　　处：《飞行力学》1999年第1期37-41,共5页Flight Dynamics

摘　　要：评价有人驾驶飞机的操纵品质，要求将高阶飞机系统用一个动态特性等效的低阶系统来代替。由于飞机横航向等效系统比较复杂，如何选择恰当的模型进行辨识是一个很重要的问题。依照军用规范，通过对飞机横航向运动等效系统模型的建立，分析了在××飞机铁鸟台架试验过程中，在信号激励下飞机横航向运动的几种模态的运动情况，并依此选择模型进行辨识，得到飞机横航向模态的品质参数，取得很好的计算结果。Assessing the handling qualities of military aircraft, it requires using a low order equivalent system to substitute for the high order aircraft system. The low order equivalent system has the same dynamic property as the aircraft system. The lateral equivalent system of aircraft is so complex that selecting different model may get different results. How to select a proper model is a very important problem. According to the military specifications, by setting up the models of lateral equivalent system of aircraft, we analyzed the lateral movement states of ×× aircraft in the test of steel bird. At the meanwhile, we selected models to identify the quality parameters of lateral modes of aircraft, and comparing the fitting data with the original test data. From there, we could see which model is the best and whose results can use to assess the handling qualities of aircraft.

关 键 词：飞机 运动模态 飞行品质 横航向 模态模型 

分 类 号：V212.128[航空宇航科学与技术—航空宇航推进理论与工程]