二轴导引头视线指向回路的鲁棒性设计  

Robust Control of Line-of-Sight Attitudes of a Two-Axis Gimbaled Seeker

作　　者：王鲜芳[1] 苗军 詹世涛[2,3] 钱志源 王岁花[1] 

机构地区：[1]河南师范大学计算机与信息工程学院,河南新乡453007 [2]上海宇航系统工程研究所,上海201109 [3]上海交通大学机械系统与振动国家重点实验室,上海200240 [4]上海市空间飞行器机构重点实验室,上海201109

出　　处：《上海交通大学学报》2014年第5期735-740,共6页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(61173071;61075086);机械系统与振动国家重点实验室基金资助项目(MSV-MS-2010-03)

摘　　要：以Yaw-pitch型导引头为研究对象,提出了一种具有鲁棒性的视线指向回路设计方法.根据各框架的动力学方程,建立了描述视线动态特性的微分方程,分析了干扰力矩、非线性和结构耦合等因素对框架结构运动与动力学特性的影响,对由基座角运动所致结构参数的摄动进行了定量估计,采用H∞稳定性理论设计了视线姿态的伺服控制器.仿真结果表明,所设计的回路对系统的不确定性、非线性和外界干扰力矩等因素具有较强的鲁棒性.A robust design approach was proposed to address the line-of-sight （LOS） control problem for a gimbaled seeker with yaw-pitch configuration. Differential equations on LOS dynamics were deduced via the moment balance of each gimbal. The different modes in which the major disturbances, including dis- turbance torque, system nonlinearity and platform angular motion, influence the system dynamics were an- alyzed. Based on the unstructured uncertainty descriptions of the system, a H∞ controller was synthesized to realize servo control on the LOS attitudes. Simulation results demonstrate that the proposed approach supplies strong robustness against system uncertainties, disturbance torques and nonlinearities.

关 键 词：导引头 视线指向 框架动力学 系统不确定性 鲁棒性 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]