Passivity-Based Control with Disturbance Observer of Electromagnetic Formation Flight Spacecraft in the Port-Hamiltonian Framework

Author:

Wang Jiaming1,Zhou Qingrui1ORCID,Zheng Wei1,Shao Jiang1

Affiliation:

1. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100020, China

Abstract

Satellite formation flying technology currently represents a focal point in space mission research. Traditional spacecraft payload performance and lifespan are often constrained by propellant limitations. Electromagnetic Formation Flying (EMFF), a propellant-free formation flying technique, has garnered widespread attention. Its inherent strong nonlinearity and coupling present challenges for high-precision control within EMFF. This paper presents the relative motion dynamics of a two-satellite EMFF in the port-Hamiltonian framework and constructs an accurate nonlinear model of the dynamics. Utilizing the concept of Interconnection and Damping Assignment and nonlinear disturbance observer, a composite disturbance-rejection passivity-based controller is designed, offering a method for controlling the magnetic dipole strength of formation satellites. Finally, numerical simulations are conducted to demonstrate the viability of the proposed dynamics model and control strategy.

Funder

National Key R&D Program of China

State Key Program of National Natural Science Foundation of China

Civil Aerospace Research Project of China

Publisher

MDPI AG

Reference31 articles.

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