基于数值仿真的时域内人-机闭环系统稳定性研究

Study on Stability of Aircraft-Pilot Closed-Loop System Based on Computational Simulation in Time Domain

针对带电传操纵系统人-机闭环系统稳定性问题,讨论了人-机闭环系统稳定性的研究方法。在分别建立飞机本体、操纵系统和驾驶员模型的基础上,建立了综合考虑非线性因素的横航向补偿控制模型。以横向滚转操纵为例,在时域内对系统进行了动态仿真,研究了驾驶员滞后时间对人-机闭环系统稳定性的影响。仿真结果表明,该方法用于研究人-机闭环系统稳定性是可行的和有效的。

Regarding the stability of aircraft-pilot closed-loop system with Fly-by-Wire flight control system,the methods of studying the problem is discussed.Models of three parts of the closed-loop aircraft-pilot system are constructed respectively,including aircraft,control system and pilot,based on which axial and lateral compensation control model of aircraft which can take nonlinear factors into consideration is set up.Taking axial rolling as an example,the dynamic response of flight parameters after pilot's controlling is simulated in time domain,and the changing direction of stability of the aircraft-pilot system under different delay time of pilot is studied.Simulation results show that the method proposed is feasible and valid.