有扰情况下航天器姿态的固定时间控制方法

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	有扰情况下航天器姿态的固定时间控制方法
	姜博严; 陈卓; 胡庆雷; 齐俊桐
	2014
会议名称	11th World Congress on Intelligent Control and Automation (WCICA 2014)
会议日期	June 29 - July 4, 2014
会议地点	Shenyang, China
关键词	航天器固定时间控制姿态控制有限时间控制
其他题名	Fixed-time attitude control for rigid spacecraft with external disturbances
页码	4384-4389
中文摘要	针对受干扰的航天器姿态稳定控制问题，给出一种基于固定时间概念的有限时间控制方法使姿态快速收敛到平衡点。已有的基于终端滑模的有限时间控制方法，其估计的收敛时间都依赖于系统状态的初值，而本文基于固定时间设计的滑模面和趋近律，不仅使系统具有更快的收敛速度，且在不知道状态初值的情况下亦可估算出系统状态到达滑模面的时间和在滑模面上滑动的时间。而当状态初值已知时，本文亦给出了更为精确收敛时间的估算方法。最后，将设计的固定时间控制器应用于航天器姿态稳定控制，仿真结果表明该控制器能有效抑制外部干扰，且对状态初值具有很强的鲁棒性。
英文摘要	In this paper, a finite-time control method based on fixed-time is developed for attitude stabilization of a rigid spacecraft with external disturbances. In comparison with the existing finite-time techniques based on terminal sliding mode, of which the initial value of system states must be known when estimating the settling time, the proposed fixed-time based sliding mode controller can not only stabilize the attitude faster, but also eliminate the need of the knowledge of the initial condition to estimate the time of the reaching and the sliding phase. Moreover, if the initial condition is known, the expression of a more accurate settling time is also given in this paper. Finally, the attitude stabilizing performance of the controller is evaluated through a numerical example and the results show that the closed-loop system is robust to external disturbances and initial conditions
收录类别	EI
产权排序	3
会议录	Proceeding of the 11th World Congress on Intelligent Control and Automation, WCICA 2014
会议录出版者	IEEE
会议录出版地	Piscataway, NJ, USA
语种	中文
ISBN号	978-1-4799-5825-2
内容类型	会议论文
源URL	[http://ir.sia.cn/handle/173321/16927]
专题	沈阳自动化研究所_机器人学研究室
推荐引用方式 GB/T 7714	姜博严,陈卓,胡庆雷,等. 有扰情况下航天器姿态的固定时间控制方法[C]. 见:11th World Congress on Intelligent Control and Automation (WCICA 2014). Shenyang, China. June 29 - July 4, 2014.