Attitude control synthesis of unstable hypersonic vehicle with aeroservoelastic effect

被引：0
|
作者：
Piao M. [1 ]
Yang Z. [2 ]
Sun M. [1 ]
Huang J. [3 ]
Chen Z. [1 ]
机构：
[1] College of Computer and Control Engineering, Nankai University, Tianjin
[2] Beijing Aerospace Technology Institute, Beijing
[3] Beijing Automatic Control & Equipment Institute, Beijing
来源：
Zhongguo Kexue Jishu Kexue/Scientia Sinica Technologica | 2019年 / 49卷 / 07期
关键词：
Attitude control; Flexibility suppression; Flexible hypersonic vehicle; H[!sub]∞[!/sub] nonsmooth optimization; Linear active disturbance rejection control (LADRC); Phase stabilization;
D O I：
10.1360/N092017-00428
中图分类号：
学科分类号：
摘要：
An attitude controller which combines phase stabilization and linear active disturbance rejection control (LADRC) is proposed for the unstable hypersonic vehicle with aeroservoelastic effect and strong uncertainties. The flexible modes can be stabilized and well damped through placing the rate gyro sensor properly, which is more robust to the perturbation of the flexible frequency and the mode shape compared with the gain stabilization method. This can solve the conflict between the strong static instability and the aeroservoelastic problem with low flexible mode frequencies. Linear active disturbance rejection control (LADRC) is employed to deal with the strong uncertainties through estimating and compensating the internal uncertainties and external disturbances together. Finally, H∞ nonsmooth optimization technology is utilized to optimize the H∞ norm of the weighed closed-loop performance transfer functions to tune the controller. Nonlinear simulation results demonstrate that the proposed control scheme can not only suppress the flexible modes effectively, but also can achieve excellent performance over the entire flight envelope by using straightforward gain scheduling. © 2019, Science Press. All right reserved.
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页码：825 / 839
页数：14
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