摘要
针对弹性运载火箭存在振动、参数摄动及外部扰动等影响,提出采用自适应陷波器对测量信号进行预处理,消除弹性模态的影响,并利用通用积分观测器(GPI)同时获得系统状态和扰动的估计,在此基础上,根据极点配置方法,设计弹性运载火箭的自适应姿态控制律。仿真表明,文中所提出的方法能够在抑制弹性振动影响的同时,对外部扰动和参数摄动具有性能鲁棒性。
In order to accommodate the influences of the flexible vibration,parameters perturbation and the external disturbances,a new adaptive control law is proposed for the flexible launch vehicle.A notch filter is used to reduce the influence of the vibration while a general proportional integral observer is designed for the estimations of the states and the generalized disturbance.The controller tuning is based on the pole assignment technique.The simulations results reveal the proposed method with robustness for the flexible vibration,parameters perturbations,and the external disturbances.
出处
《广西大学学报(自然科学版)》
CAS
CSCD
北大核心
2011年第6期1004-1008,共5页
Journal of Guangxi University(Natural Science Edition)
基金
国家自然科学基金资助项目(60975058)
湖北省自然科学基金资助项目(2010CDB01904)
关键词
弹性运载火箭
自适应控制
陷波器
通用比例积分观测器
flexible launch vehicle
adaptive control
notch filter
general proportional integral observer