光电着舰引导系统的视轴稳定  

LOS stabilization of optic-electro landing system

作　　者：葛兵[1,2] 高慧斌[2] 余毅[2] 

机构地区：[1]中国科学院大学,北京100049 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《光学精密工程》2014年第6期1577-1583,共7页Optics and Precision Engineering

基　　金：国家863高技术研究发展计划资助项目(No.2010AA8080202)

摘　　要：为了提高光电着舰引导系统的视轴跟踪精度和指向精度,研究了如何隔离舰体运动对光电经纬仪视轴的扰动。对舰载光电经纬仪进行建模,引入了各种扰动力矩。设计了超前滞后控制、线性二次高斯恢复(LQG/LTR)控制和H∞控制3种控制器来提高系统的性能和稳定性,详细研究了Kalman滤波和H∞加权矩阵的设计。在Matlab中对设计的控制方法进行仿真,并在摇摆台进行了试验验证。在时域、频域响应和稳定性能等方面对3种控制器进行的对比实验表明,LQG/LTR控制和H∞控制结果满足设计指标要求,稳定隔离度达到50dB以上。基于提出的方法,经纬仪可以对着舰飞机进行稳定跟踪和精确轨迹测量,实现着舰引导。To increase line-of-sight （LOS） tracking and pointing accuracy of an Optic-Electro （O-E） landing guidance system, this work explores how to isolate the LOS tracking and pointing of a O-E theodolite from the carrier motion disturbance. A carrier-based O-E theodolite model was established with various disturbance factors introduced. Three kinds of controllers, Lead-lag,LQG/LTR（ Linear Quadratic Gaussian/ Loop Transfer Recovery） and H∞ were designed to improve the stability and performance of the system. The Kalman filter and H∞ weighting matrix were investigated in detail. Then, the controllers were emulated in Matlab and verified on a swing bench. The compared experiments for the three kinds of controllers on time domain, frequency response and stability were performed. Obtained results show that both LQG/LTR and H∞ controllers can satisfy the design specifications, and their decoupling effects are as deep as 50 dB, which can ensure precise tracking and pointing performance of LOSs in O-E landing guidance systems.

关 键 词：着舰引导 视轴稳定 线性二次高斯恢复(LQG LTR)控制 H∞控制 

分 类 号：V556[航空宇航科学与技术—人机与环境工程] U666.124[交通运输工程—船舶及航道工程]