着舰过程中风切变对PIO的影响
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Effect of Wind Shear on PIO During Landing
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    摘要:

    研究了舰尾风场作用下的舰载机着舰安全性问题。建立了风切变影响下的舰载机模型,研究了风切变在舰载机着舰过程中对驾驶员诱发振荡(Pilot Induced Oscillation, PIO)的影响,研究了重新构型的舵机速率限制器在舰尾风场环境中对PIO的抑制作用。仿真结果表明,舰载机在着舰下滑过程中风切变对PIO的影响有限,但会使舰载机突然出现短暂的“点头”现象,导致驾驶员以高增益操纵飞机,造成作动器速率达到饱和,从而诱发PIO。采用带反馈及旁通的舵机速率限制器与速率限制器前置滤波器相配合,对由飞机操纵系统中的非线性特性引发的PIO有较好的抑制效果。

    Abstract:

    The aircraft landing safety problem under the action of the stern wind field is studied. The aircraft model under the influence of wind shear is established and the effect of wind shear on pilot induced oscillation(PIO) during landing is studied. Then a new type of actuator rate limiter is designed, and its inhibitory effect on PIO in the stern wind field environment is studied. Simulation results show that in the process of landing the wind shear has limited effect on PIO, but makes the short "nod" phenomenon suddenly appear, which leads to control with high gain. Therefore the actuator saturation is caused, and PIO is induced. The methods which combine feedback and bypass of the actuator rate limiter with the rate limiter prefilter have prominent effect on suppression of PIO caused by the nonlinear characteristics in aircraft control system. 

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王子健 曲志刚 周思羽.着舰过程中风切变对PIO的影响[J].南京航空航天大学学报,2017,49(S1):119-124

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  • 在线发布日期: 2017-09-15
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