滚转弹两框架导引头的前馈补偿技术  

Feed-forward compensation of two-axis gimbal seeker installed on roll missile

作　　者：刘晓[1] 莫波[1] 刘福祥[1] 闫新颖[2] LIU Xiao MO Bo LIU Fuxiang YAN Xinying(School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China Beijing Aerospace Automatic Control Institute, Beijing 100854, China)

机构地区：[1]北京理工大学宇航学院,北京100081 [2]北京航天自动控制研究所,北京100854

出　　处：《航空学报》2016年第12期3764-3773,共10页Acta Aeronautica et Astronautica Sinica

摘　　要：针对弹体滚转情况下两框架平台式导引头的伺服控制问题,基于导引头运动学和动力学,建立了导引头稳定回路模型。结合弹体滚转条件下的导引头输入指令和输出视线角速率关系,构建了视线闭环回路。针对偏航、俯仰通道间的解耦控制问题,推导出解耦条件,要求两通道由失调角到光轴转动角速度的传递函数相同。仿真分析了该模型在视线角输入以及弹体姿态扰动输入时,弹体滚转对导引头跟踪精度产生的影响,并由此提出了滚转角速度前馈补偿控制方案。结果表明,采用结合滚转角前馈补偿控制的两框架平台式导引头方案可以满足滚转弹的制导精度要求。To solve the decoupling control problem of two-axis gimbal seeker installed on the roll missile,the stabilized loop of seeker model is built based on the kinematics and dynamics of the two-axis gimbal.In order to get the closed loop line of sight,the input and output under the roll situation is derived.The decoupling condition is based on the assumption that the pitch and yaw channels have the same transfer function between measuring disturbance angle and optical axis rotation speed.The effect of body roll rate on the tracking accuracy of the seeker is discussed with line of sight angle input,as well as the effect of body roll rate on the disturbance rejection with body attitude disturbance input.A feed forward compensation control method is proposed to reduce the effect of body roll rate.Simulation result shows that the two-axis gimbal seeker with feedforward compensation control can satisfy the tracking accuracy of the rolling missile.

关 键 词：导引头 伺服机构 弹体滚转速率 跟踪精度 前馈控制 

分 类 号：V448.13[航空宇航科学与技术—飞行器设计] TJ765.3[兵器科学与技术—武器系统与运用工程]