机载光电稳定平台的强鲁棒性滑模变结构控制  

Strong Robust Sliding Mode Variable Structure Control in Airborne Photoelectric Stabilized Platform

作　　者：马经帅 于洵[1] 韩峰[1] Ma Jingshuai;Yu Xun;Han Feng(College of Ordnance Science&Technology,Xi’an Technological University,Xi’an 710000,China)

机构地区：[1]西安工业大学兵器科学与技术学院,西安710000

出　　处：《兵工自动化》2021年第5期30-33,83,共5页Ordnance Industry Automation

摘　　要：为使机载光电稳定平台系统在复杂环境下仍具有强鲁棒性,建立光电稳定平台数学模型。以两轴四框架光电吊舱为研究对象,通过分析噪声干扰及本身结构参数的变化对光电稳定平台的影响,提出基于干扰观测器(disturbance observer,DOB)的滑模控制器设计方案。理论推导和仿真结果表明:滑模变结构控制(sliding mode variable structure control,SMVSC)对干扰力矩和摄动完全适应,对系统结构参数变化和外界扰动具有良好的鲁棒性;比无干扰观测器的控制系统,拥有更高的稳定精度和更快的动态响应,能增强光电稳定平台的抗扰动能力。In order to make the airborne optoelectronic stabilized platform system still have strong robustness in complex environments,a mathematical model of the optoelectronic stabilized platform is established.Taking the two-axis four-frame photoelectric pod as the research object,by analyzing the influence of noise interference and changes in its structural parameters on the photoelectric stabilized platform,a design scheme of sliding mode controller based on disturbance observer(DOB)is proposed.Theoretical derivation and simulation results show that:sliding mode variable structure control(SMVSC)is fully adaptable to disturbance torque and perturbation,and has good robustness to system structural parameter changes and external disturbances;it has higher performance than control systems without disturbance observers.Stable accuracy and faster dynamic response enhance the anti-disturbance capability of the photoelectric stabilized platform.

关 键 词：光电稳定平台 滑模变结构控制 干扰观测器 强鲁棒性 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]