机动再入体的变结构制导律设计及仿真分析

Variable Structure Guidance Law with Angular Constraint Design and Simulation for Maneuver Reentry Body

非自旋再入体机动导引作为近年来新兴的技术,由于具有许多优点而受到了控制领域研究者的高度重视。以非自旋再入体为研究对象,对新型导引技术应用于再入体的关键问题进行了研究。传统的各种制导律都是以获得最小脱靶量为最终目标,没有考虑到击中目标时刻的末端落角。为了保证非自旋再入体完成精确打击目标的任务,针对非自旋再入体垂直打击目标的制导问题,设计了一种带落角约束的变结构制导律。仿真研究表明,所设计的末制导律能够保证非自旋再入体命中目标时的脱靶量和末端落角都能满足要求,可以为开展近空间非自旋再入体制导问题的研究提供测试平台。

As a new technique,nonspinning reentry body maneuver guidance has many advantages and gets much attention from researchers of the control field.The nonspinning reentry body was taken as the research object and the variable guidance technique was applied to it.Several important problems in the application were researched.Older guidance laws’s design target was to get miss distance,and did not research the problem of terminal angular constraint.To solve the guidance problem of nonspinning reentry body upright attacking a target,a variable structure guidance law with angular constraint was designed.Simulation research shows that above terminal guidance laws can ensure the nonspinning warhead to attack a target with required miss distance and required terminal angle,and be applied to theory study and simulate validation of nonspinning reentry body guidance system.