首页> 外文期刊>International Journal of Innovative Computing Information and Control >INTEGRATED RELATIVE POSITION AND ATTITUDE CONTROL OF SPACECRAFT IN PROXIMITY OPERATION MISSIONS WITH CONTROL SATURATION
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INTEGRATED RELATIVE POSITION AND ATTITUDE CONTROL OF SPACECRAFT IN PROXIMITY OPERATION MISSIONS WITH CONTROL SATURATION

机译:具有饱和度的接近度操作任务中航天飞机的综合相对位置和姿态控制

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摘要

In this paper, an integrated relative position and attitude control scheme is proposed for a pursuer spacecraft approaching a spatial target in proximity operation missions. Relative translation and rotation dynamics of spacecraft are both presented, and further integratedly considered due to mutual couplings, which leads to a six degrees-of-freedom (6-DOF) control system with input saturation. To simultaneously achieve relative position and attitude requirements, an adaptive backstepping control law is designed, where an auxiliary signal is employed to cope with control saturation, and a first order filter is introduced to overcome the "explosion of terms" problem. Within the Lya-punov framework, the controller guarantees the stability of the closed-loop system in the presence of bounded disturbances and unknown system parameter. Numerical simulation demonstrates the effect of the proposed control law.
机译:在本文中,提出了一种综合的相对位置和姿态控制方案,用于在接近操作任务中接近空间目标的飞行器航天器。提出了航天器的相对平移和旋转动力学,并且由于相互耦合而进一步综合考虑,这导致了输入饱和的六自由度(6-DOF)控制系统。为了同时达到相对位置和姿态要求,设计了一种自适应反步控制律,其中采用辅助信号应对控制饱和,并引入一阶滤波器来克服“项爆炸”问题。在Lya-punov框架内,控制器可在存在有界干扰和未知系统参数的情况下保证闭环系统的稳定性。数值仿真表明了所提出的控制规律的效果。

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