国防科技大学学报2017，Vol.39Issue(6)：88-97,10.DOI:10.11887/j.cn.201706014
带扩张观测器的三维有限时间收敛导引律
Three-dimensional finite time convergence guidance law with extended state observer
摘要
Abstract
Aiming at sending the line-of-sight angular rate to a small neighborhood of zero before hitting the target to achieve the interception of the missile to the target to quasi-parallel approaching state.Based on the active disturbance rejection control to estimate and compensate the uncertainties,a novel three-dimensional finite time convergence guidance law was presented accounting for the second order dynamics of missile′s autopilot and target′s maneuver.The finite time convergence of system was strictly proved based on the finite time convergence control theory.For the purpose of restraining measurement noise,the traditional tracking differentiator was modified to be applied in the process of designing a novel extended state observer and backstepping control.Simulation results demonstrate that the proposed guidance law can guide missiles to accurately intercept a maneuvering target with finite time,even if the autopilot has a lag,modified tracking differentiator has the advantages of high precision,fast response and strong ability of noise restraint,the extended state observer based on the modified tracking differentiator has better estimation effect.关键词
三维导引律/扩张状态观测器/反演控制/有限时间收敛/自动驾驶仪延迟Key words
three-dimensional guidance/extended state observer/back-stepping control/finite time convergence/autopilot lag分类
航空航天引用本文复制引用
王华吉,雷虎民,张旭,何绍溟,周觐..带扩张观测器的三维有限时间收敛导引律[J].国防科技大学学报,2017,39(6):88-97,10.基金项目
国家自然科学基金资助项目(61573374,61503408) （61573374,61503408）
航空自然科学基金资助项目(20140196004) （20140196004）
