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Fractional order attitude stability control for sub-satellite of tethered satellite system during deployment

机译：系留卫星系统子卫星在部署过程中的分数阶姿态稳定性控制

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摘要

This paper investigates the sub-satellite attitude stabilization control of a tethered satellite system (TSS) during deployment stage. The dynamic model of sub-satellite motion is first established using Euler equations. During the tether deployment stage, the stability characteristics of attitude motion are analyzed with dissymmetric junction points between tether and sub-satellite. Then, a fractional-order attitude controller with memory ability is proposed to achieve stable control of the sub-satellite attitude, in which a dynamic model is linearized by using the feedback linearization method. Finally, validity of the fractional order controller and the advantages over an integer order controller are examined using numerical simulation. Comparing with the corresponding integer order controller, numerical simulation results indicate that the proposed sub-satellite attitude controller based on fractional order can not only stabilize the sub-satellite attitude, but can also respond faster with smaller overshoot.
机译：本文研究了部署阶段的系留卫星系统（TSS）的亚卫星姿态稳定控制。首先使用欧拉方程建立亚卫星运动的动力学模型。在系绳展开阶段，利用系绳与卫星之间不对称的交点分析姿态运动的稳定性。然后，提出了一种具有记忆能力的分数阶姿态控制器，以实现对亚卫星姿态的稳定控制，其中采用反馈线性化方法对动力学模型进行线性化。最后，使用数值模拟研究了分数阶控制器的有效性和优于整数阶控制器的优点。与相应的整数阶控制器比较，数值仿真结果表明，所提出的基于分数阶的亚卫星姿态控制器不仅可以稳定亚卫星姿态，而且可以在较小的超调情况下更快地做出响应。

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