Adaptive PI Control Based Stability Margin Configuration of Aircraft Control Systems with Unknown System Parameters and Time Delay  

作　　者：ZHANG Zhibing ZHOU Dapeng WANG Yeguang GAO Wanxin ZHANG Yanjun 

机构地区：[1]AVIC Shenyang Aircraft Design and Research Institute,Shenyang 110035,China [2]School of Automation,Beijing Institute of Technology,Beijing 100081,China [3]State Key Lab of Autonomous Intelligent Unmanned Systems,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Journal of Systems Science & Complexity》2024年第4期1507-1525,共19页系统科学与复杂性学报（英文版）

基　　金：supported in part by the National Natural Science Foundation of China under Grant Nos.62322304,61925303,62173323,62003277,62088101,and U20B2073;in part by the Foundation under Grant No.2019-JCJQ-ZD-049;in part by Beijing Institute of Technology Research Fund Program for Young Scholars。

摘　　要：The stability margin is a vital indicator for assessing the safety level of aircraft control systems.It should maintain sufficient stability margin to ensure safety during flight,especially in the process of large maneuver operations.The stability margin is generally quantified by the Bode diagram,which strictly depends on the system parameters and the open-loop transfer function.However,due to the uncertain flight environments,transmission delays of sensors and mode switchings,etc.,there exist large parameter and structure uncertainties in the aircraft control systems,which make it difficult to precisely configure the stability margin to the desired value by the usual control methods.To address this problem,an indirect adaptive control strategy is proposed in this paper,where an adaptive PI control law with the capability of self-configuration of stability margin is developed.The developed control law not only achieves stable time-varying command tracking in the time domain,but also is able to automatically configure the phase margin and gain margin in the frequency domain.Finally,the simulation of the one-degree-of-freedom roll rate control model of the air vehicle verifies the validity of the proposed control method.

关 键 词：Adaptive control aircraft control parameter uncertainty stability margin configuration 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] V249.1[自动化与计算机技术—控制科学与工程]