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首页> 外文期刊>Journal of Sound and Vibration >An investigation of an active landing gear system to reduce aircraft vibrations caused by landing impacts and runway excitations
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An investigation of an active landing gear system to reduce aircraft vibrations caused by landing impacts and runway excitations

机译：主动起落架系统的研究，以减少由着陆撞击和跑道激励引起的飞机振动

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A mathematical model is developed to control aircraft vibrations caused by runway excitation using an active landing gear system. Equations are derived to describe the integrated aircraft-active system. The nonlinear characteristics of the system are modelled and it is actively controlled using a Proportional Integral Derivative (PID) strategy. The performance of this system and its corresponding passive system are compared using numerical simulations. It is demonstrated that the impact loads and the vertical displacement of the aircraft's centre of gravity caused by landing and runway excitations are greatly reduced using the active system, which result in improvements to the performance of the landing gear system, benefits the aircraft's fatigue life, taxiing performance, crew/passenger comfort and reduces requirements on the unevenness of runways. (c) 2008 Elsevier Ltd. All rights reserved.
机译：建立了数学模型，以使用主动起落架系统控制由跑道激励引起的飞机振动。得出方程式来描述集成的飞机主动系统。对系统的非线性特性进行建模，并使用比例积分微分（PID）策略对其进行主动控制。使用数值模拟比较了该系统及其相应的无源系统的性能。结果表明，使用主动系统可以大大降低起落和跑道激励引起的冲击载荷和飞机重心的垂直位移，从而改善起落架系统的性能，有益于飞机的疲劳寿命，滑行性能，机组人员/乘客舒适度，并减少了对跑道不平整的要求。 （c）2008 Elsevier Ltd.保留所有权利。

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