In this study, we investigated the sliding mode control (SMC) technology for the spacecraft rendezvous maneuver under unknown system parameters and external disturbance. With no knowledge of the mass and inertial matrix of the pursuer spacecraft, an adaptive SMC approach was devised using the hyperbolic tangent function to realize the control objective of reducing the chattering problem. In addition, the finite-time stability of the relative dynamics and the boundedness of the signals in the closed-loop system were derived under proposed method. The effectiveness and advantages of the proposed method were verified through theoretical analysis and numerical simulations.

中文翻译：

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系统参数未知的航天器交会自适应有限时间控制

在这项研究中，我们研究了在未知系统参数和外部干扰条件下用于航天器交会机动的滑模控制（SMC）技术。在不了解飞行器质量和惯性矩阵的情况下，利用双曲正切函数设计了一种自适应SMC方法，以实现减少颤振问题的控制目标。在此基础上，推导了闭环系统中相对动力学的有限时间稳定性和信号的有界性。通过理论分析和数值模拟验证了该方法的有效性和优势。