拦截器制导系统敏感装置捷联布局设计研究

针对在大过载直接侧向脉冲力作用下,动能拦截器捷联寻的器和捷联惯组在各自安装位置处所敏感到的、由弹性振动所导致的转角及其不一致性,耦合入制导系统后,会对拦截器高精确制导性能产生不良影响,并可能造成拦截任务失败。分析了制导系统敏感装置所敏感到的弹性振动信号对制导指令误差的影响。对捷联寻的器与捷联惯组的四种典型捷联布局形式进行了探讨。基于结构动力学观点,研究了捷联布局形式、敏感装置捷联刚度这两个设计要素对两敏感装置转角及转角差的影响;得出了弹体弹性振动条件下两设计要素对捷联敏感装置转角响应影响的特点。

Layout Design of Strapdown Guidance Sensors for KKV

Angular rotation difference between the fixing position of strappeddown seeker and inertial measurement unit (IMU) on a kinetic kill vehicle (KKV) can be induced by elastic body vibration. When coupled into the guidance system, the angular rotation difference will affect the guidance accuracy obviously and therefore may lead to intercepting failure. It is analyzed that the influence of sensed elastic vibration on guidance error. Four typical configurations of strapdown guidance sensors are represented and discussed. Based on view of structural dynamics, the influence of two key drivers including layout style of strapdown sensors and connection stiffness on the angular rotation difference are investigated. Suggestions for depressing the angular rotation difference are represented.