摘要
为了消除舰船摇摆对舰载光电跟踪设备稳定精度的影响,提高系统视轴稳定性能,根据舰船摇摆对视轴偏差影响的随机性,在描述视轴稳定回路的基础上,设计视轴稳定滑模变结构控制器,并引入约束条件,以减弱系统抖振。利用AR序列预测估计方法,实现视轴偏差预测估计,完成视轴稳定滑模变结构控制律的求取,并利用matlab仿真软件,对视轴稳定滑模变结构控制律进行数字计算。仿真结果表明,该控制方法能有效地消除了陀螺测量随机噪声带来的影响,减弱了系统抖振,对舰载视轴稳定有良好的性能。
In order to eliminate the influence on stable precision of ship-borne electro-optical tracking system caused by ship swaying and to enhance the stability of Line-of-sight （LOS） system, according to the ships swaying randomness working on LOS error, a LOS stability Variable Structure Controller （VSC） was designed based on the description of LOS stability loop. To weaken system dithering, restriction condition was introduced into classical VSC reaching law. AR sequence prediction method was used for LOS error forecasting, and variable structure control law was worked out Numerical computation of LOS stability VSC control law was carried out via Matlab simulation software. Simulation results demonstrate that the method proposed can effectively eliminate the influence brought by gyro measure stochastic noise, system dithering is reduced, and that high performance of ship-borne LOS stability is achieved.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2007年第3期26-29,共4页
Opto-Electronic Engineering
关键词
视轴稳定
离散变结构控制
AR预测
光电跟踪系统
LOS stability
Discrete variable structure control
AR prediction
Photoelectric tracking system
