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基于反演高阶滑模的飞行器最优末制导律
引用本文:范金锁,张合新,孟飞,胡友涛,夏朝辉.基于反演高阶滑模的飞行器最优末制导律[J].中国惯性技术学报,2012(1):29-33.
作者姓名:范金锁  张合新  孟飞  胡友涛  夏朝辉
作者单位:第二炮兵工程大学自动控制系
基金项目:国家自然科学基金(61074072)
摘    要:针对传统最优末制导律鲁棒性能较弱,且对参数摄动及外扰敏感的不足,而滑模控制对扰动具有较强鲁棒性的优点,提出一种新的基于反演准连续高阶滑模的最优末制导律,其中反演控制能够有效保证系统全局稳定性,而准连续高阶滑模控制则用于消除扰动影响。为了去除抖振效果,引入自适应超螺旋算法在线更新控制参数以消除符号函数导致的高频抖振影响。仿真结果表明:飞行器在该末制导律导引下,弹目视线角速率快速收敛,从而保证飞行器有很高的命中精度;鲁棒性较强;能够较好的满足约束条件要求。

关 键 词:最优末制导律  反演控制  准连续高阶滑模  自适应超螺旋算法  强鲁棒性

Optimal terminal guidance law for vehicle based on backstepping higher-order sliding mode control
FAN Jin-suo,ZHANG He-xin,HU You-tao,MENG Fei,XIA Zhao-hui.Optimal terminal guidance law for vehicle based on backstepping higher-order sliding mode control[J].Journal of Chinese Inertial Technology,2012(1):29-33.
Authors:FAN Jin-suo  ZHANG He-xin  HU You-tao  MENG Fei  XIA Zhao-hui
Institution:(Department of Automation,Second Artillery Engineering University,Xi’an 710025,China)
Abstract:In view that traditional optimal terminal guidance law is poor in robustness,vulnerable to parameter perturbation and sensitive to external disturbance,while sliding mode control is robust to disturbance,a new optimal terminal guidance law based on backstepping quasi-continuous higher-order sliding mode control is proposed.Global stability is achieved by backstepping control while the influence induced by perturbation is eliminated by quasi-continuous higher-order sliding mode control.In order to eliminate the system chattering,an adaptive super-twisting algorithm which can update the control parameters on-line is introduced to remove the effect brought by sign function.Simulation results show that,leading by the guidance law proposed,the rate of line-of-sight(LOS) angle can converge quickly,so higher guidance precision,as well as strong robustness and well-satisfied angle constraint are ensured.
Keywords:optimal terminal guidance law  backstepping control  quasi-continuous higher-order sliding mode  adaptive super-twisting algorithm  strong robustness
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