基于飞行实测载荷的副翼操纵导数识别  

Identification of aileron control derivatives based on measured loads in maneuvering flight

作　　者：蒋献[1] 孟敏 陈致名 JIANG Xian;MENG Min;CHEN Zhiming(Chinese Flight Test Establishment,Xi′an 710089,China;School of Aeronautics,Northwestern Polytechnical University,Xi′an 710072,China)

机构地区：[1]中国飞行试验研究院,陕西西安710089 [2]西北工业大学航空学院,陕西西安710072

出　　处：《西北工业大学学报》2024年第2期214-221,共8页Journal of Northwestern Polytechnical University

摘　　要：某型飞机横向操纵时副翼和扰流板会耦合偏转实现飞机的滚转运动,现有气动力参数辨识方法无法单独识别出副翼和扰流板的操纵导数。基于飞机控制律设计逻辑和滚转运动时结构的受载特点,提出一种基于飞行实测载荷的副翼操纵导数识别方法。通过实测机动飞行中机翼各测载剖面的结构载荷并结合剖面外结构质量与加速度分布,提出了机动飞行中机翼气动载荷的测量方法;结合飞机横向操纵瞬时滚转力矩平衡方程和操纵面偏转逻辑,推导了滚转改出时副翼操纵导数识别过程,提出了基于机翼实测载荷的副翼操纵导数识别方法;基于前述方法开展了副翼操纵导数识别,并分析了不同马赫数对副翼操纵导数的影响。研究表明,基于飞行实测载荷能够进行副翼操纵导数识别,而且同一马赫数下副翼操纵导数识别结果集中度较好,随着马赫数的增加,副翼操纵效能将会降低。飞行载荷实测结果可用于气动参数辨识工作中。When a certain type of aircraft is maneuvered laterally,the aileron and the spoiler will be coupled and deflected to realize the rolling motion of the aircraft.The existing aerodynamic parameter identification methods cannot separately identify the control derivatives of the aileron and the spoiler.Based on the design logic of the aircraft control law and the loading characteristics of the structure during the roll motion,a new method for identifying the aileron control derivative based on the flight measured load is proposed.Firstly,the measurement method of wing aerodynamic load in maneuvering flight is proposed by measuring the structural loads of each load-testing section of the wing in maneuvering flight and combining the structural mass and acceleration distribution outside the section.Secondly,combining the instantaneous rolling moment balance of aircraft lateral control based on the equation and control surface deflection logic,the identification process of aileron control derivatives during roll recovery is deduced,and the identification method of aileron control derivatives based on the measured load of the wing is proposed.Finally,based on the aforementioned method,the identification of aileron control derivatives is carried out,and the influence of different Mach numbers on the derivative of aileron control is analyzed.The results show that the aileron control derivative can be identified based on the flight measured load,and the concentration of the aileron control derivative results is better at the same Mach number.As the Mach number increases,the aileron control effectiveness will decrease.The measured results of flight loads have the potential to be applied to the identification of aerodynamic parameters.

关 键 词：飞行实测载荷 气动载荷 副翼操纵导数 参数辨识 

分 类 号：V217.32[航空宇航科学与技术—航空宇航推进理论与工程]