机载激光通信终端的模糊变结构跟踪方法研究  

Study on Fuzzy Variable Structure Tracking of Airborne Laser Communication Terminals

作　　者：涂巧玲[1] 胡涛[1] 曹阳[1] 

机构地区：[1]重庆理工大学电子信息与自动化学院,重庆400054

出　　处：《半导体光电》2015年第1期125-127,154,共4页Semiconductor Optoelectronics

基　　金：重庆市新产品研发团队支持计划项目(CSTC2013KJRC-TDJS40012)

摘　　要：机载激光通信系统中视轴的稳定性决定了通信质量的高低,该过程是一个典型的非线性问题。为保证通信链路的建立与稳定,提出一种模糊变结构控制方法。借助变结构思想将模型线性化处理,并用模糊算法来确定切换增益的取值,以削弱抖振。该方法响应迅速且易于实现。仿真结果表明,该方法对机载环境下的激光通信终端所受到的扰动与系统参数摄动具有很好的抑制作用,能够实现视轴的快速稳定跟踪。The stability of the axis of sight determines the communication quality of airborne laser communication systems. This process is a typical nonlinear problem, so in order to ensure the establishment and stability of communication link, a fuzzy variable structure control method was proposed. By means of variable structure theory to make extensive understanding of the perturbations, the model was linearized, at the same time, fuzzy algorithm was used to determine the value of the switching gain so as to weaken the chattering. The method is characterised by fast response and easy implementation. The final simulation results show that the proposed method presents a good inhibitory effect on the disturbance of the laser communication terminal and the structural parameter changes, so as to achieve fast and stable tracking of the axis of sight.

关 键 词：机载激光通信 稳定平台 变结构控制 模糊控制 李雅普诺夫稳定性分析 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]