考虑舵面效能柔性飞机阵风减缓控制系统
Gust alleviation control system of flexible aircraft considering rudder efficiency
刘易斯 1杨佑绪 1刘燚 2成志勇 1余灵富1
作者信息
- 1. 南昌航空大学飞行器工程学院,南昌 330063
- 2. 北京机电工程研究所,北京 100083
- 折叠
摘要
舵面效能损耗会直接影响柔性飞机阵风减缓效果,考虑舵面效能损耗是主动阵风减缓控制系统设计的关键.针对柔性飞机遭遇阵风干扰问题,以某大展弦比柔性飞机模型为对象,建立包含刚体运动和弹性模态的柔性飞机结构动力学模型,考虑舵面作动器存在舵面效能损耗的情况,设计一种自适应观测器实时在线估计舵面作动器效能因子,重构和求解自适应主动容错H∞控制器,实现柔性飞机阵风载荷减缓.离散和连续阵风激励下的柔性飞机开/闭环时域响应仿真表明:在舵面无效能损耗情况下,H∞控制与比例-积分-微分(PID)控制均能达到较好的减缓效果,H∞控制相较于PID控制响应时间更快;在舵面存在效能损耗情况下,自适应观测器在 4s内能够完成效能因子评估,基于该效能因子设计的H∞控制器能够达到与理想情况相当的阵风减缓效果.
Abstract
The rudder surface effectiveness loss directly affects the gust alleviation effect of flexible aircraft,considering the rudder surface effectiveness loss is the key to the design of an active gust alleviation control system.In order to tackle the issue of gust interference in flexible aircraft,a high aspect ratio flexible aircraft model is utilized to create a structural dynamics model of the flexible aircraft that takes into account elastic modes and rigid body motion.Additionally,the rudder effectiveness loss of the rudder surface actuator is taken into consideration.An adaptive observer is designed to estimate the efficiency factor of the rudder surface actuator online in real-time,reconstruct and solve the adaptive active fault-tolerant H∞ controller,and achieve aircraft gust load alleviation.Under discrete and continuous gust excitation,simulation of the aircraft's open/closed loop time domain response demonstrates that both H∞control and proportional-integral-derivative(PID)control can achieve better alleviation effects under the rudder surface ineffective energy loss,and that H∞ control's response time is faster than PID control's.Under the rudder efficiency loss,the adaptive observer can complete the efficiency factor evaluation in less than 4 seconds,and the H∞ controller,which is designed based on this efficiency factor,can achieve gust alleviation that is comparable to the ideal scenario.
关键词
气动伺服弹性/阵风响应/阵风减缓控制系统/自适应观测器/主动容错控制系统Key words
aeroservoelastic/gust response/gust alleviation control system/adaptive observer/active fault-tolerant control systems引用本文复制引用
出版年
2025
国家科技期刊平台
NSTL
维普
万方数据