A Method for Stable Deployment of an Electrodynamic Tethered Satellite in Three-Dimensional Space

13th International Conference on Motion and Vibration Control; 12th International Conference on Recent Advances in Structural Dynamics

Yu, B.S.^1 ; Jin, D.P.^1 ; Wen, H.^1

State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing

210016, China^1

关键词: Asymptotic stabilization;    Electrodynamic forces;    Non-linear dynamic equations;    Out-of-plane motion;    Stability analysis;    Stabilization control;    Tethered satellite systems;    Three dimensional space;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/744/1/012119/pdf
DOI  :  10.1088/1742-6596/744/1/012119

来源: IOP

【 摘 要 】

The paper presents an asymptotic stabilization strategy for the deployment of a controlled tethered satellite system in three-dimensional space, in which the tether length rate is taken as the control variable. Firstly, a rigid-rod tether model is employed to establish the nonlinear dynamic equations of in-plane and out-of-plane motions of the system. Then, by stability analysis of the linearized system at a preassigned direction to deploy, the control law and asymptotic stability condition for the deployment are obtained. The electrodynamic tethered satellite in equatorial plane is discussed. As a result, the large swing motions during deployment are stabilized asymptotically through reliance on the electrodynamic force and the tether length rate. The case studies in the paper well demonstrate the proposed stabilization control strategy.