现代飞机俯仰跟踪时诱发振荡预测分析

根据飞机纵向ＰＩＯ的特点，提出了预测分析ＰＩＯ所用的人－机闭环系统数学模型，其中飞机采用等效系统数学模型，驾驶员操纵采用ＭｃＲｕｅｒ模型，参数按地面人－机模拟飞行跟踪试验确定，集中介绍了四种飞机纵向ＰＩＯ预测准则，Ｓｍｉｔｈ－Ｇｅｄｄｅｓ准则，修正带宽准则，增益，相位裕度准则，Ｎｅａｌ－Ｓｍｉｔｈ原则，并提供了相应的计算方法。

Prediction of Pilot Induced Oscillations in Pitch Tracking Task for Modern Aircraft

Based on the characteristics of the pitch PIO, a pilot aircraft loop model is presented in which the aircraft is described as an equivalent system model and the McRuer model is adopted as pilot handling. Their parameter values come from pilot aircraft tracking simulation experiments on the ground. Four criteria with calculation methods provided are introduced to predict the pitch PIO tendency,which are listed as follows such as Smith Geddes criterion, adaption of bandwidth criteria, gain margin and phase margin criterion and Neal Smith criteria. Finally the PIO predictions of a certain modern aircraft(highly augmented plane) are shown as illustrations.