CAJ | 학술논문

高超声速飞行器再入段保持大迎角下滑过程中，航向失稳、荷兰滚发散、副翼操纵反效，为保证大迎角再入段飞行安全需要研究大迎角下滚转控制。针对大迎角下副翼操纵反效问题，提出了“改善LCDP的副翼控制滚转”与“方向舵控制滚转”两种控制策略，并利用结构奇异值快速分析两种滚转控制策略的鲁棒性，最后通过仿真对比两种滚转控制策略的控制品质与鲁棒性。仿真结果表明，标称状态下两种滚转控制策略均能完成滚转控制，但在考虑气动参数摄动情况下，方向舵控制滚转的鲁棒性明显优越于改善LCDP的副翼控制滚转。
고초성속비행기재입단보지대영각하활과정중，항향실은、하란곤발산、부익조종반효，위보증대영각재입단비행안전수요연구대영각하곤전공제。침대대영각하부익조종반효문제，제출료“개선LCDP적부익공제곤전”여“방향타공제곤전”량충공제책략，병이용결구기이치쾌속분석량충곤전공제책략적로봉성，최후통과방진대비량충곤전공제책략적공제품질여로봉성。방진결과표명，표칭상태하량충곤전공제책략균능완성곤전공제，단재고필기동삼수섭동정황하，방향타공제곤전적로봉성명현우월우개선LCDP적부익공제곤전。
The hypersonic vehicle has numerous control problems such as heading and Dutch roll instability,roll reverse in reentry phase due to high angle of attack .In order to ensure flight safety,it's necessary to study the roll control in large angle of attack .Firstly,two kinds of roll control strategies are presented in this paper,which are improved LCDP roll control by aileron and roll control by rudder .Then,the structured singular value is applied to analyze the robustness of them .Finally,control quality and robustness of the two roll control strategies are compared with each other by simulation .The simulation results show that they are both efficient to control roll angle in the nominal state,but the latter roll control strategy is more robust than the former one considering the perturbation of aerodynamic parameters .