A simple orbit-attitude coupled modelling method for large solar power satellites

Li, Qingjun, Wang, Bo, Deng, Zichen, Ouyang, Huajiang ORCID: 0000-0003-0312-0326 and Wei, Yi (2018) A simple orbit-attitude coupled modelling method for large solar power satellites. ACTA ASTRONAUTICA, 145. pp. 83-92.

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Abstract

A simple modelling method is proposed to study the orbit-attitude coupled dynamics of large solar power satellites based on natural coordinate formulation. The generalized coordinates are composed of Cartesian coordinates of two points and Cartesian components of two unitary vectors instead of Euler angles and angular velocities, which is the reason for its simplicity. Firstly, in order to develop natural coordinate formulation to take gravitational force and gravity gradient torque of a rigid body into account, Taylor series expansion is adopted to approximate the gravitational potential energy. The equations of motion are constructed through constrained Hamilton's equations. Then, an energy- and constraint-conserving algorithm is presented to solve the differential-algebraic equations. Finally, the proposed method is applied to simulate the orbit-attitude coupled dynamics and control of a large solar power satellite considering gravity gradient torque and solar radiation pressure. This method is also applicable to dynamic modelling of other rigid multibody aerospace systems.

Item Type:	Article
Uncontrolled Keywords:	Solar power satellite, Natural coordinate formulation, Gravity gradient torque, Solar radiation pressure, Differential-algebraic equations
Depositing User:	Symplectic Admin
Date Deposited:	12 Mar 2018 07:32
Last Modified:	19 Jan 2023 06:38
DOI:	10.1016/j.actaastro.2017.12.037
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3018876