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首页> 外文期刊>Advances in Mechanical Engineering >Fault-tolerant sliding mode attitude tracking control for flexible spacecraft with disturbance and modeling uncertainty:
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Fault-tolerant sliding mode attitude tracking control for flexible spacecraft with disturbance and modeling uncertainty:

机译：具有干扰和建模不确定性的挠性航天器的容错滑模姿态跟踪控制：

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This article investigates the attitude tracking control problem for a class of flexible spacecraft with a redundant four reaction wheels’ setting. In this study, inertia uncertainties, external disturbance, wheel torque saturation, and configuration misalignment are taken into account simultaneously. Two types of sliding mode controllers are presented to solve this design problem. First, supposing the norm upper bound of external disturbances, bounds of inertia, and input uncertainties are available, a terminal sliding mode attitude tracking control strategy is developed, where the controller and steering laws are synthesized together. Second, supposing these norm upper bounds are unavailable, an adaptive control law is designed to cope with attitude tracking problem. Under both control schemes, the system trajectory can be ensured to arrive on the specified sliding surface in finite time. Finally, an illustrative example is given to verify the effectiveness of the proposed attitude tracking control metho...
机译：本文研究了一类具有冗余四个反作用轮设置的挠性航天器的姿态跟踪控制问题。在这项研究中，同时考虑了惯性不确定性，外部干扰，车轮扭矩饱和和配置失准。提出了两种类型的滑模控制器来解决该设计问题。首先，假设外部干扰，惯性范围和输入不确定性的标准上限是可用的，则开发了一种终端滑模姿态跟踪控制策略，其中控制器和转向定律被综合在一起。其次，假设这些规范上限不可用，则设计一种自适应控制定律来应对姿态跟踪问题。在这两种控制方案下，都可以确保系统轨迹在有限时间内到达指定的滑动表面。最后，给出一个说明性例子，以验证所提出的姿态跟踪控制方法的有效性。

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