评定飞行品质的等效系统法

 一、概述 飞机设计的最终目的是为了获得具有良好的静、动态飞行品质,并能完成规定飞行任务的飞机。目前衡量飞行品质好坏的规范是MIL-F-8785C,该规范给出了飞行包线内飞机的静态控制品质、动态响应品质、对大气紊流的响应品质以及驾驶员的操纵要求等项规定。飞行控制系统设计者最关心的是动态响应品质。目前有多种确定飞机动态响

EQUIVALENT SYSTEMS METHOD TO EVALUATE THE FLIGHT QUALITIES

The determination of equivalent systems both in time domain and frequency domain is discussed. Various matching forms of equivalent systems are studied. In frequency domain, the non-linear optimization is used to find out the equivalent parameters. In time domains the adaptive filtering algorithms with UD decomposition are employed as an identification algorithm to estimate the parameters. Some new results about the mismatching criterion, single and double matching, time delay and equivalence base are given. They are proved by digital computing and real-time microprocessor realization.