上海航天
上海航天
상해항천
AEROSPACE SHANGHAI
2012年
5期
25-28,35
,共5页
时间最优%大气层外拦截%变结构控制%末制导
時間最優%大氣層外攔截%變結構控製%末製導
시간최우%대기층외란절%변결구공제%말제도
Minimum time%Exoatmospheric interception%Variable structure control%Terminal guidance
针对大气层外拦截提出了一种基于拦截时间最短的拦截律。根据最优控制理论由相对运动参数确定拦截弹时间最优的推进方向,用变结构控制理论调整拦截弹姿态角以跟踪指令姿态角,拦截弹沿体轴方向持续推进直至拦截结束。拦截律要求控制器在较短的时间完成对指令姿态角的跟踪后即停止工作。仿真结果表明：拦截律有很好的拦截精度,可引导拦截弹对目标实施碰撞杀伤。
針對大氣層外攔截提齣瞭一種基于攔截時間最短的攔截律。根據最優控製理論由相對運動參數確定攔截彈時間最優的推進方嚮,用變結構控製理論調整攔截彈姿態角以跟蹤指令姿態角,攔截彈沿體軸方嚮持續推進直至攔截結束。攔截律要求控製器在較短的時間完成對指令姿態角的跟蹤後即停止工作。倣真結果錶明：攔截律有很好的攔截精度,可引導攔截彈對目標實施踫撞殺傷。
침대대기층외란절제출료일충기우란절시간최단적란절률。근거최우공제이론유상대운동삼수학정란절탄시간최우적추진방향,용변결구공제이론조정란절탄자태각이근종지령자태각,란절탄연체축방향지속추진직지란절결속。란절률요구공제기재교단적시간완성대지령자태각적근종후즉정지공작。방진결과표명：란절률유흔호적란절정도,가인도란절탄대목표실시팽당살상。
An exoatmospheric interception law based on minimum interception time was introduced in this paper. According to optimal control theory, the optimal propulsion direction was determined. The interceptor's attitude angles to the commanded ones was adjusted by the autopilot according to variable structure control theory. The interceptor was propelled along the direction of its body axis. The interception law would require the autopilot working for a shorter time until the interceptor' s body axis aimed to the optimal propulsion direction. The simulation results showed that the interception law had well interception accuracy and could be used to lead the interceptor to achieve hit-to-kill.
