CAJ | 학술논문

针对某高超声速飞行器末制导段攻角非负及大落角约束要求,提出"BTT180控制方法+具有落角约束的最优制导"组合制导方式.在末制导初始段,采用 BTT180 控制方式实现飞行器的翻身下压,解决了攻角非负的约束要求;选择具有角速率反馈形式的最优制导律,实现攻击末端大落角的约束要求.对不同初始高度和约束落角以及垂直攻击时不同初始弹道倾角下的飞行轨迹进行仿真分析,结果表明该组合制导方式使飞行器在命中目标的同时,满足攻角非负及落角约束要求,验证了该制导律的有效性和准确性.
침대모고초성속비행기말제도단공각비부급대락각약속요구,제출"BTT180공제방법+구유락각약속적최우제도"조합제도방식.재말제도초시단,채용 BTT180 공제방식실현비행기적번신하압,해결료공각비부적약속요구;선택구유각속솔반궤형식적최우제도률,실현공격말단대락각적약속요구.대불동초시고도화약속락각이급수직공격시불동초시탄도경각하적비행궤적진행방진분석,결과표명해조합제도방식사비행기재명중목표적동시,만족공각비부급락각약속요구,험증료해제도률적유효성화준학성.
According to the requirement that hypervelocity vehicle`s angle of attack can`t be negative in terminal guidance phase with large impact angle constraint, method of BTT180 is utilized to make the vehicle turn over and descend to avoid negative angle of attack; and optimal guidance law with line-of-sight rate feedback is selected to act as terminal guidance law to satisfy impact angle constraint. Results of trajectory simulations with different trajectory inclination angles in vertical attack, different initial heights and angle constraints in non-vertical attack demonstrate the accuracy, validity and good adaptability of the proposed method.