Adaptive observer-based integral event-triggered antivibration control of a full aircraft active landing gear system with irregular runway excitations  

作　　者：Wenxiao HU Chenglong DU Fanbiao LI Xinmin CHEN Chunhua YANG Weihua GUI 

机构地区：[1]School of Automation,Central South University,Changsha 410083,China [2]Research Center in System Engineering for Special Aircrafts,Ningbo Institute of Materials Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China

出　　处：《Science China(Information Sciences)》2024年第6期244-257,共14页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China(Grant Nos.62303492,61973319);National Science Fund for Excellent Young Scholars of China(Grant No.62222317);Postdoctoral Fellowship Program of CPSF(Grant Nos.BX20230430,2023M733940);Science and Technology Major Project of Hunan Province(Grant No.2021GK1030);Key R&D Plan of Hunan Province(Grant No.2023GK2023);Science and Technology Innovation Program of Hunan Province(Grant No.2022WZ1001);Natural Science Foundation of Hunan Province(Grant No.2023JJ40765);Natural Science Foundation of Changsha(Grant No.kq2208287)。

摘　　要：This study addresses the antivibration issue of a full aircraft active landing gear system(LGS)under landing impact and runway excitations via a novel adaptive observer-based integral event-triggered control method.First,a full aircraft active LGS comprising a front gear and two synchronized main left and right gears with active suspensions is established,where the information exchange among them is not implemented directly.Second,two adaptive observers are designed separately for the front and main LGSs to identify the varying damping parameters and estimate the system states simultaneously.Third,estimated states are transmitted to a shared network through a novel integral event-triggered mechanism(I-ETM);thus,the front and main LGSs are interconnected,and a networked control scheme for the aircraft LGS is constructed.Additionally,the integrated active control law is designed with the aid of the transmitted states of the front and main LGSs,enhancing the robustness against the pitch vibration of the aircraft.Furthermore,the L2-stability of the hybrid system is guaranteed to depress the vertical vibration effect of the landing impact and irregular runway excitations,thus improving passenger safety and comfort.Moreover,a codesign method is provided to obtain feasible solutions to the gain matrices of the observers and controllers simultaneously.Simulation and comparison results are presented to illustrate the effectiveness and superiority of the proposed control scheme in antivibration and saving communication resources.

关 键 词：aircraft active landing gear antivibration control integral event-triggered mechanism adaptive observer L_2-stability 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] V226[自动化与计算机技术—控制科学与工程]