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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 widespread use of fly-by-wire systems on modern aircraft, their dynamics are becoming more and more complex. If the driver’s manipulation is inconsistent with the performance of the aircraft and its external environment, the stability of the human-machine closed-loop system will decline. In the worst case, there will be an unexpected closed-loop coupled oscillation not in accordance with the wishes of the driver, which directly affects flight safety, This phenomenon is called driver induced oscillation. In order to solve the problem of pilot-induced lateral oscillation, a mathematic model of the pilot-controller-aircraft hybrid system is established in this paper. The key parameters of the pilot-induced transverse yaw oscillation are studied. The closed-loop simulation of the model of Airbus A300 aircraft is carried out, and the influence of each parameter on the PIO in the transverse direction is given. The analysis results are of guiding significance to engineering practice.