全捷联小型弹药制导系统设计

Guidance system design for deeply-strapdown miniature munitions

围绕适用于小型无人机、单兵等平台的微小型弹药制导化需求,提出了基于捷联导引头和捷联惯导的全捷联制导控制方案。针对全捷联体制无法直接提供有效制导信息的问题,导出了惯性视线速率的理论方程及滚转稳定条件下的实用形式,设计了非线性微分器以实现稳定的视线信息数值微分。给出了作为内回路的PI校正两回路过载驾驶仪。分别进行了机载平台和单兵发射的仿真。结果表明:全捷联技术可以有效解决小射程条件下制导弹药的小型化、精确化,多约束条件下的制导控制系统设计是应用的关键。

A novel deeply strapdown guidance ＆ control （DSGC） framework based on strapdown seeker and strapdown inertial measurement unit was presented for miniature guided munitions applied to UAV, soldier shoulder and other platforms. Due to that there was no available guidance information of DSGC, the theoretic transform equations based on missile-target geometric relationship and roll-stabilized simplified equations were introduced, then a nonlinear differentiator was proposed for stable digital angular rate calculation. A PI compensated two-loop acceleration autopilot was presented as the inner loop of guidance system. The trajectory simulation for UAV platform and soldier shoulder was analyzed, respectively. The results showed that the DSGC technology was a well solution for the precisely guided miniature munitions especially the short-range. Wherein, the multiple-constraints design for guidance ＆ control system was the critical factor for application.