滑翔再入飛行器橫側(cè)向耦合姿態(tài)控制策略
[Abstract]:In view of the strong coupling phenomenon in the reentry process of an underactuated reusable launch vehicle with only two body flaps, a lateral control strategy based on the coupling characteristics of this type of aircraft is proposed. On the basis of analyzing the mechanism of inertial coupling, motion coupling and stability coupling, the stable boundary of rapid rolling under the nominal trajectory is calculated, and the inclination angle instruction rate is limited to the boundary to stabilize the inertial coupling. In order to solve the problem that the existing Dutch roll mode prediction formula is not suitable for this layout aircraft, a new Dutch roll motion prediction method is proposed, and the control gain is designed according to the prediction results. Finally, the combined control strategy of (RCS) for low dynamic pressure flaps and reaction force control system and the transverse and lateral coupling control strategy of body flaps acting alone under high dynamic pressure are obtained. The simulation results of six degrees of freedom (6-DOF) show that the control strategy can track the guidance instructions well and make maximum use of the pneumatic rudder surface to reduce the consumption of RCS fuel.
【作者單位】: 北京航空航天大學(xué)宇航學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(61174221;11272062)~~
【分類號(hào)】:V448.22
【共引文獻(xiàn)】
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6 狄e,
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