基于模糊PID控制的起落架摆振抑制及稳定性分析

Landing Gear Shimmy Suppression and Stability Analysis Based on Fuzzy PID Control

摘要: 文章以某型飞机起落架为研究对象，考虑其绕支柱轴线的扭转、支柱侧向弯曲及轮胎侧向变形，建立了含路面激励的单轮前起落架摆振动力学模型。在此基础上，利用ARID (Active Rotary Inertia Driver)摆振控制器，采用模糊PID控制算法，对加入控制器前后的起落架摆振系统进行时域分析。时域图显示，加入控制器后原本发散的系统趋于收敛，证明了该控制器对抑制含路面激励的起落架摆振的可行性。

Abstract: This paper takes the landing gear of a certain aircraft as the research object, considering the torsion of the landing gear around the strut axis, the lateral bending of the landing gear strut, and the lateral deformation of the tire. A single-wheel nose gear shimmy dynamics model with road surface excitation is established. On this basis, the ARID (Active Rotary Inertia Driver) shimmy controller is employed, and the fuzzy PID control algorithm is adopted to conduct time-domain analysis of the landing gear shimmy system before and after controller implementation. The time-domain diagram shows that the originally divergent system becomes convergent after the controller is added. This study demonstrates the feasibility of using this controller to suppress landing gear shimmy with road surface excitation.