一种针对结构损伤的非线性容错飞行控制方法
收稿日期: 2015-02-27
修回日期: 2015-05-19
网络出版日期: 2015-05-27
基金资助
国家自然科学基金(61174168);航空科学基金(20100758002,20128058006)
A nonlinear fault tolerant flight control method against structural damage
Received date: 2015-02-27
Revised date: 2015-05-19
Online published: 2015-05-27
Supported by
National Natural Science Foundation of China(61174168);Aeronautical Science Foundation of China(20100758002,20128058006)
王乾 , 李清 , 程农 , 宋靖雁 . 一种针对结构损伤的非线性容错飞行控制方法[J]. 航空学报, 2016 , 37(2) : 637 -647 . DOI: 10.7527/S1000-6893.2015.0139
Structural damage can affect system static stability and control precision by changing aircraft aerodynamic parameters. A nonlinear fault tolerant flight control scheme against aircraft structural damage is presented, which implements the adaptive backstepping control method with a second-order command filter. The fault tolerant control is applied to a multi-input nonlinear aircraft model. In order to compensate the influence from structural damage, the aircraft aerodynamic parameters are estimated on-line and the controller is adaptively regulated. A command filter is employed to avoid the complex derivative computation in the backstepping method. The stability of the closed-loop system with the command filter is proved. The upper bounds of control tracking errors and the lower bounds of the frequency parameters in the command filters are also analytically presented. The proposed nonlinear fault tolerant control method is verified by a simulation of a large commercial aircraft with loss of the vertical tail.
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