Liu X.-D.,China Aerospace Science and Technology Corporation |
Liu X.-D.,Science and Technology on Aerospace Intelligent Control Laboratory |
Huang W.-W.,China Aerospace Science and Technology Corporation |
Huang W.-W.,Science and Technology on Aerospace Intelligent Control Laboratory |
And 3 more authors.
Yuhang Xuebao/Journal of Astronautics
Aiming at the complicated nonlinearities, high uncertainties and strong couplings of hypersonic vehicle, a nonlinear attitude control method is put forward. According to the attitude motion equations of unpowered hypersonic vehicle, a nonlinear design model for the attitude control is established. With regard to a class of nonlinear system, a dynamic inversion control (DIC) based on extended state observer (ESO) is proposed and then applied to the attitude control of hypersonic vehicle by using dynamic surface control (DSC) approach. Simulation results show that, the chosen vehicle designed by using the proposed control scheme can track the angle position commands more quickly and accurately, compared with the other DSC scheme based on traditional DIC. Furthermore, it also possesses stronger robustness against system uncertainties. © 2015, Editorial Dept. of JA. All right reserved. Source
Liu X.,China Aerospace Science and Technology Corporation |
Liu X.,Science and Technology on Aerospace Intelligent Control Laboratory |
Wang Y.,Beihang University |
Huang W.,China Aerospace Science and Technology Corporation |
And 2 more authors.
International Journal of Aerospace Engineering
This paper presents a novel robust attack angle control approach, which can effectively suppress the impacts from system uncertainties and servo-loop dynamics. A second-order linear model of electromechanical servo loop is considered in the modeling and design processes. With regard to the block-structure models facing attack angle control, the multiple robust surfaces and dynamic surface control (DSC) approaches are both employed. By means of Lyapunov function method, the stability conditions of attack angle control systems are, respectively, given without/with considering the servo-loop dynamics in design process. Computer simulation results present that, compared with the attack angle control scheme which does not consider the servo-loop dynamics in design process, the proposed scheme can guarantee that the whole attack angle control system possesses the better comprehensive performances. Moreover, it is easy to be realized in engineering application. © 2015 Xiaodong Liu et al. Source