寻的导弹数字化制导回路分析

Analysis on Digital Guidance Loop of Homing Missile

随着寻的导弹数字化及快速性的提高,非线性因素及弹体-导引头耦合特性增加,传统的导引头、制导及自动驾驶仪回路独立设计方法由于缺乏子系统之间的协调性,制导回路闭合后带来了诸多问题。以一体化数字制导回路为分析对象,从制导回路稳定性分析、快速性设计及数字采样3个方面分析了制导匹配性约束。分析结论指出,弹体-导引头耦合、数字化控制等因素能够改变原系统的稳定裕度,导致系统产生不期望的特性,在设计环节必须开展一体化分析。

With the improvement in digital and rapidity of homing missile,increasing of nonlinear factors and seeker coupling,and traditional independent design method for seeker,guidance and autopilot loop,various problems were caused after the guidance loop was closed for lack of coordination among its subsystems.This paper,based on integrated digital guidance loop,analyzed matching ability constraint from aspects of stability,rapidity and digital sampling in guidance loop.Analysis results suggested that Seeker coupling and digital control issues could change its stability margin of original sub-system and cause undesired response,so it is necessary to conduct integrated analysis on design process.