全捷联对地攻击制导武器导引头隔离度对制导系统性能的影响

针对全捷联图像导引头隔离度问题,分别推导了由探测器和角速率陀螺之间的刻度尺系数误差及动力学偏差引起的隔离度传递函数;采用系数冻结法及劳斯判据分析了含有隔离度寄生回路的制导系统稳定区域,给出了不同无量纲末导时间下制导系统稳定时刻度尺误差和动力学偏差的取值范围;利用伴随函数法研究了隔离度对制导精度的影响。以上研究结果可以为全捷联制导武器制导控制系统参数设计提供参考,对于隔离度正反馈的情况应予以更多关注。

Effect of ground attack strapdown guided weapons seeker disturbance rejection rate on the performance of guidance system

According to the problem of disturbance rejection rate(DRR) with strapdown imaging seeker, the transfer functions of DRR due to different scale and dynamic error between detector and angular rate gyro were established. With Routh criteria and coefficient freezing method, the stable region of guidance system with disturbance rejection rate parasitic loop(DRRPL) was analyzed, the value range of scale error and dynamic error under different non dimensional time was presented. The effect on guidance accuracy of DRR was studied by adjoint method. The research can provide technology reference to the guidance and control system design of strapdown guided weapons, more attention should be paid on the positive feedback situation of DRR.