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兵工学报  2014 

过载指令约束下的导弹导引律设计

DOI: 10.3969/j.issn.1000-1093.2014.09.014, PP. 1419-1427

Keywords: 兵器科学与技术,制导系统,自动驾驶仪,过载指令饱和,指令滤波器,导引律

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Abstract:

?基于平面内的目标-导弹相对运动方程,采用指令滤波backstepping方法设计了一种过载指令约束下的平面导引律,同时考虑了导弹自动驾驶仪的二阶动态特性。依据制导系统主要状态变量响应特性要求将制导系统分为两个子系统。采用指令滤波backstepping方法基于零化视线角速率原则和目标-导弹相对速度小于一个负常数的原则分别对两个子系统进行导引律设计。指令滤波backstepping方法不仅能够有效地处理过载指令饱和约束而且克服了传统backstepping方法中“项数爆炸”的缺陷。在过载指令饱和且导弹自动驾驶仪存在较大滞后的情况下,针对视线方向施加控制和不施加控制两种情况进行了仿真,结果表明设计的导引律在拦截大机动目标时具有优良的性能。

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