CAJ | 학술논문

在精确制导问题中,为克服目标机动和弹体动态特性对制导精度的影响,建立了平面内的弹目相对运动模型,在此基础上建立考虑导弹动态特性的制导模型;为提高末制导精度,设计了考虑导弹动态特性和目标机动的自适应滑模导引律;为了实现该导引律,利用带有滤波器的扩张观测器估计视线角速率、视线角加速度、目标机动加速度及其变化率等制导信息. 仿真结果表明,扩张观测器收敛速度快、估计精度高,且具有较强的抗干扰能力;在不同机动条件下,所设计的考虑导弹动态特性的含扩张观测器的改进滑模控制律相比于比例导引律、增广比例导引律和滑模导引律具有较好的导引性能.
재정학제도문제중,위극복목표궤동화탄체동태특성대제도정도적영향,건립료평면내적탄목상대운동모형,재차기출상건립고필도탄동태특성적제도모형;위제고말제도정도,설계료고필도탄동태특성화목표궤동적자괄응활모도인률;위료실현해도인률,이용대유려파기적확장관측기고계시선각속솔、시선각가속도、목표궤동가속도급기변화솔등제도신식. 방진결과표명,확장관측기수렴속도쾌、고계정도고,차구유교강적항간우능력;재불동궤동조건하,소설계적고필도탄동태특성적함확장관측기적개진활모공제률상비우비례도인률、증엄비례도인률화활모도인률구유교호적도인성능.
To overcome the effect of target maneuvering and dynamic characteristics as guidance accuracy in guidance process, a guidance model with dynamic characteristics considered was firstly established. Based on the model, an adaptive sliding mode guidance law consideriny dynamic characteristics and target maneuvering was designed. Then, an extended observer was used to es-timate the guidance message such as the rate of line-of-sight ( LOS) , acceleration of LOS, maneuvering acceleration and accelera-tion rate of target. The result of simulation shows that the extended observer has fast speed of convergence, high accuracy of estima-tion and good ability of anti-jamming. The guidance law designed has better guidance performance than that of proportional naviga-tion guidance ( PNG) , augmented proportional navigation guidance ( APNG) and sliding mode guidance ( SMG) in different condi-tions of target maneuvering.