二轴导引头视线指向回路的鲁棒性设计

上海交通大学学报（自然版） ›› 2014, Vol. 48 ›› Issue (05): 735-740.

• 其他 • 上一篇

二轴导引头视线指向回路的鲁棒性设计

王鲜芳1，苗军2，詹世涛2,3，钱志源2,4,王岁花1

(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)

收稿日期:2013-04-29
基金资助:
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)

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

WANG Xianfang1,MIAO Jun2,ZHAN Shitao2,3,QIAO Zhiyuan2,4,WANG Suihua1

(1. School of Computer Science and Information Engineering，Henan Normal University, Xinxiang 453007, Henan, China; 2. Institute of Aerospace System Engineering, Shanghai 201109, China; 3. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China； 4. Shanghai Key Laboratory of Spacecraft Mechanism, Shanghai 201109, China)

Received:2013-04-29

摘要/Abstract

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.

关键词: 导引头, 视线指向, 框架动力学, 系统不确定性, 鲁棒性

Abstract:

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 disturbance torque, system nonlinearity and platform angular motion, influence the system dynamics were analyzed. 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.

Key words：

Key words: seeker, line-of-sight (LOS), gimbal dynamics, system uncertainty, robust stability

中图分类号:

TJ 765.3

王鲜芳1，苗军2，詹世涛2,3，钱志源2,4,王岁花1. 二轴导引头视线指向回路的鲁棒性设计[J]. 上海交通大学学报（自然版）, 2014, 48(05): 735-740.

WANG Xianfang1,MIAO Jun2,ZHAN Shitao2,3,QIAO Zhiyuan2,4,WANG Suihua1. Robust Control of Line-of-Sight Attitudes of a Two-Axis Gimbaled Seeker[J]. Journal of Shanghai Jiaotong University, 2014, 48(05): 735-740.

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