航空兵器Issue(2)：3-8,21,7.
基于挠性吸气式高超声速飞行器的传感器容错控制
Sensor Fault-Tolerance Control of a Flexible Air-Breathing Hypersonic Flight Vehicle
摘要
Abstract
This paper is devoted to the controller design for a flexible air-breathing hypersonic flight vehicle （FAHFV） with sensor fault-tolerance. The curve-fit model of the FAHFV developed by Sigthorsson introduces strong bilateral coupling between the rigid and flexible modes. The flexible modes not only influence the aerodynamic forces and moments directly, but also create unexpected sensor measurement fault, especially for the additive turbulence for angle-of-attack measurement which brings great challenge for controller design. Thus, in order to solve this problem, firstly, a linear model is established by using small-perturbation method around the given trim condition. Secondly, a PI observer is introduced to recortfigure all the states without static error on the basis of the system inputs and contaminated outputs. Finally, a guarantee cost controller based on the recortfigured states feedback is designed to make the FAHFV stabilized and make the given quadratic performance index function get to its least upper boundary. What contributes is that the traditional state feedback method is ameliorated and the effects of sensor fault caused by flexible modes are eliminated successfully, which is great significance in actual engineering. Simulation results show that the PI observer achieves good transient performance and the guarantee cost controller successfully makes the altitude and the velocity of the FAHFV track the reference trajectory excellently.关键词
挠性模态/传感器容错/保性能控制器/高超声速飞行器Key words
flexible mode/sensor fault-tolerance/guarantee cost controller/hypersonic flight vehicle分类
军事科技引用本文复制引用
雷正东,杨剑影,赵阳阳..基于挠性吸气式高超声速飞行器的传感器容错控制[J].航空兵器,2012,(2):3-8,21,7.基金项目
航空科学基金 （）
国家自然基金重点项目 （）
