驾驶员模型参数对横航向PIO的影响研究

Research on Lateral PIO Affected by Pilot Model Parameters

随着电传操纵系统在现代飞机上的广泛应用,其动力学特性也越来越复杂。如果驾驶员的操纵与飞机性能及其外部环境不协调,则人机闭环系统稳定性下降,严重时会出现一种非期望的,不符合驾驶员意愿的闭环耦合振荡,直接影响到飞行安全,这种现象称为驾驶员诱发振荡。针对驾驶员操纵诱发横航向振荡问题,本文建立了横航向驾驶员-控制器-飞机本体组合系统的数学模型,研究驾驶员模型中诱发横航向振荡的关键参数。以空客A300飞机横航向模型进行闭环仿真分析,给出各个参数对横航向PIO的影响特性,分析结果对工程实践具有一定的指导意义。

With the fly-by-wire system widely used in modern aircraft, the dynamic characteristics are more and more complex. If the pilot＇ s manipulation is not coordinated with the plane performance and the ex- ternal environment, the stability of pilot-aircraft closed system will decline. The unexpected Closed-loop coupling oscillation will appeare and can＇ t meet the will of the pilot, which has directly effects on the safety. This phenomenon is called pilot induced oscillation（PI0）.Aiming at the problem of the lateral PIO, a mathematical mode of lateral pilot mode-controller-plane has been created in this article. The key param- eters of the pilot mode have been researched. According to the closed loop simulation analysis on the A300, the influence characteristic of the parameters to the lateral PIO has been acquired. The results have a cer- tain significance to the engineering practice.