航空学报 > 2003, Vol. 24 Issue (4): 289-292

分叉分析方法在大迎角控制律设计中的应用

黎康, 方振平   

  1. 北京航空航天大学飞行器设计与应用力学系 北京 100083
  • 收稿日期:2002-04-30 修回日期:2003-05-19 出版日期:2003-08-25 发布日期:2003-08-25

Application of Bifurcation Analysis to Control Law Design at High Angles of Attack

LI Kang, FANG Zhen-ping   

  1. Department of Flight Vehicle Design and Applied Mechanics; Beijing University of Aeronautics and Astronautics; Beijing 100083; China
  • Received:2002-04-30 Revised:2003-05-19 Online:2003-08-25 Published:2003-08-25

摘要: 在充分了解本体静不稳定飞机大迎角非线性数学模型的分叉特性的基础上, 以分叉分析方法作为指导, 采用特征结构配置方法设计纵向控制律和调参的横航向控制律。结果显示, 不期望的分叉行为得到抑制,飞机稳定和解耦的飞行范围得以延伸。

关键词: 分叉, 特征结构配置, 大迎角, Hopf分叉, 静不稳定

Abstract: After a thorough investigation of the bifurcation behaviors of the nonlinear model of an inher ently staticunsteady air craft at high angles of attack, eigenstructure assignment was applied to design the longitudinal controllaw and gain-scheduled later al control law. Results show that the unexpected bifurcat ion behaviors are restr ained andt he stable and decoupled flight envelope is extended.

Key words: bifurcation, eigenstructure assignment, high angle of attack, Hopf bifurcation, static unsteady

中图分类号: