滚转角速度对两轴稳定平台的影响分析

Effects of Roll Rate on Two Axis Stabilization Platform

导弹机动飞行时滚转维一般存在扰动,常规雷达导引头大多采用方位-俯仰两轴稳定系统,研究滚转扰动如何影响方位/俯仰视线角速度输出对于雷达导引头研制有重要意义。在对平台轴向误差微分分析的基础上结合半实物仿真试验研究了滚转扰动对方位俯仰角速度输出影响,试验结果显示两轴稳定系统可以隔离滚转扰动,但当电轴指向与平台指向存在偏差时滚转扰动会额外引入视线角速度输出误差。

Large roll disturbance occurs while the missile is maneuvering, azimuth-elevation two axis stabilization system is widely used in radar seekers, research on how LOS （ line of sight） rate output of radar seeker is affected by roll disturbance is a valuable topic in radar seeker design. In this paper, the roll disturbance of missile is researched through platform axis＇ error differential analysis combine with semi hardware in loop simulation, which shows that roll disturbance is isolated through two axis stabilization system, however, the direction error between electric axis and platform direction results in LOS rate errors related to missile roll disturbance.