Highlights A new coupled dynamic model of the tethered SPS is established based on ANCF. Under the influence of gravitational gradient, the range of some parameters is unstable. The vibrations caused by the gravity gradient can lead to the tether slack phenomenon. The maximum tension of the tethers is much greater than the average tension.
Abstract A new orbit-attitude-vibration coupled dynamic model of the tethered solar power satellite (Tethered SPS) is established based on absolute nodal coordinate formulation. The Hamilton’s equation of the system is derived by introducing generalized momentum through Legendre transformation. The correctness of the proposed model is verified by an example. The dynamic characteristics of the Tethered SPS are studied using the symplectic Runge-Kutta method. Simulation results show that the orbital radius and the total energy of the system are well preserved. The attitude of the system is unstable when the mass of the bus system is small. However, the attitude stability is dependent on some other parameters of the system, which requires further studies. It is also found that the average tether force/deformation can be roughly estimated by simplifying the solar panel as a particle. The proposed model can be used to study the orbit-attitude-vibration coupled dynamics and control problems.
Orbit-attitude-vibration coupled dynamics of tethered solar power satellite
Advances in Space Research ; 67 , 1 ; 393-400
2020-09-21
8 pages
Article (Journal)
Electronic Resource
English
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