滑模控制对激光通信ATP系统跟踪性能的改善  

Improvement of ATP System Tracking Performance of Laser Communication Using Sliding Mode Control

作　　者：胡贞[1,2] 姜会林[1] 佟首峰[1] 

机构地区：[1]长春理工大学空间光电技术研究所,吉林长春130022 [2]长春理工大学电子信息工程学院,吉林长春130022

出　　处：《北京理工大学学报》2012年第5期522-525,共4页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(61077056)

摘　　要：为提高激光通信捕获、跟踪、对准(ATP)系统粗精复合控制的跟踪精度,提出了指数趋近律的离散滑模控制方法.建立了ATP系统跟踪控制模型,设计了滑模控制器组成的精跟踪控制系统,对动态滞后跟踪性能进行仿真研究.结果表明,相对于频域设计法,滑模控制可增加系统的控制带宽,在较宽的范围内对粗跟踪系统产生的随机误差有较强的抑制能力.In order to improve the tracking accuracy of acquisition, tracking, and pointing （ATP） system of the laser communication, the method of discrete sliding mode control based on an exponential reaching law is presented in this paper. The tracking control model of the ATP system was established and the fine tracking system with sliding mode control was designed. Simulation of the dynamic lag tracking using designed system was conducted. The results show that, compared with conventional frequency domain method, the sliding mode control could increase control bandwidth and improve the stability and dynamic performance of the system. In addition, the coarse residual error of the system would be effectively suppressed in a wide range.

关 键 词：激光通信 ATP系统 滑模控制 跟踪精度 控制带宽 

分 类 号：TN929.1[电子电信—通信与信息系统]