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飞轮控制航天器的自适应姿态跟踪
引用本文:马晓敏,刘延柱.飞轮控制航天器的自适应姿态跟踪[J].上海力学,2003,24(2):151-156.
作者姓名:马晓敏  刘延柱
作者单位:上海交通大学工程力学系,上海交通大学工程力学系 上海 200030,上海 200030
基金项目:国家自然科学基金(10082003)
摘    要:本文讨论飞轮控制航天器的姿态控制问题。由于航天器在运行过程中受各种复杂环境因素的影响,难以确定其动力学参数的准确值,因此姿态控制系统必须具有自适应能力,以适应不可预计的干扰和航天器自身参数的改变。文中基于滑模控制方法提出一种改进的自适应姿态控制规律,适用于有内扰动力短存在的航天器。此控制规律可在不须提供动力学参数的情况下,使飞轮控制航天器跟踪期望的姿态变化规律以实现姿态机动。利用Lyapunov直接方法证明了控制系统的渐近稳定性。对于受随机扰动力短作用的航天器姿态跟踪的时间历程进行了数值仿真,计算结果证实上述方法的有效性。

关 键 词:飞轮控制航天器  姿态跟踪  自适应控制  运动稳定性
修稿时间:2002年8月9日

Adaptive Attitude Tracking Maneuvers of Wheels-Controlled Spacecraft
MA Xiao-min,LIU Yan-zhu.Adaptive Attitude Tracking Maneuvers of Wheels-Controlled Spacecraft[J].Chinese Quarterly Mechanics,2003,24(2):151-156.
Authors:MA Xiao-min  LIU Yan-zhu
Abstract:The attitude control problem of a wheels-controlled spacecraft is discussed in this paper. Considering the influence of complicate environmental factors on spacecraft in the orbital motion, it is impossible to determine the accurate value of dynamical parameters of the system, therefore the adaptive ability of the control system is necessary to adapt the unexpected variation of the disturbance and system parameters of the spacecraft. An improved adaptive control approach based on sliding-mode control is proposed in this paper for the spacecraft subjected to internal perturbation torque. The suggested control law can ensure the attitude tracking maneuvers of the spacecraft when all dynamical parameters are unknown. The asymptotic stability of the control system is proved by the Lyapunov direct method. The time histories of the attitude tracking process of spacecraft under the action of stochastic perturbed torque are simulated numerically, and the result of numeration illustrates the efficiency of the approach.
Keywords:Wheels-controlled spacecraft  Attitude tracking  Adaptive control  Stability of motion
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