飞机横航向等效拟配模型的对比研究

针对电传飞机的横航向低阶等效拟配问题，根据国外新近规范及相关资料对飞机横航向等效模型及其拟配方法的提法，选用了五种适用于不同情况的等效系统数学模型，比较和研究了它们各自的特点；并通过对具体算例的计算，验证了各等效模型的适用范围及拟配方法的实用性；同时，对频率范围的确定，初值的选取等拟配计算中遇到的问题进行了探讨，提出了一些参考性建议。

Research on the Models of Lateral and Directional Equivalent Matching for an Aircraft

To assess the flight qualities of a modern aircraft with flight control system, it is a widely acceptable way to match its dynamics with that of a low-order equivalent system. In this paper, five kinds lateral and directional dynamics models of low-order equivalent system are abstracted according to the latest handling qualities specifications and other relative information. Their structures and usages are investigated, and then some example aircraft are used to test the validity of the models and the matching methods. Some problems which were found in the process of matching are discussed and the possible solutions are suggested. All of them are expected to be helpful in studying and evaluating the lateral and directional flight qualities.