Suboptimal Nonlinear Model Predictive Control Strategies for Tracking Near Rectilinear Halo Orbits
Abstract
Near Rectilinear Halo Orbits (NRHOs), a subclass of halo orbits around the L1 and L2 Lagrange points, are promising candidates for future lunar gateways in cis-lunar space and as staging orbits for lunar missions. Closed-loop control is beneficial to compensate orbital perturbations and potential instabilities while maintaining spacecraft on NRHOs and performing relative motion maneuvers. This paper investigates the use of nonlinear model predictive control (NMPC) coupled with low-thrust actuators for station-keeping on NRHOs. It is demonstrated through numerical simulations that NMPC is able to stabilize a spacecraft to a reference orbit and handle control constraints. Further, it is shown that the computational burden of NMPC can be managed using specialized optimization routines and suboptimal approaches without jeopardizing closed-loop performance.
Cite
@article{arxiv.2008.09240,
title = {Suboptimal Nonlinear Model Predictive Control Strategies for Tracking Near Rectilinear Halo Orbits},
author = {Andrew W. Berning and Dominic Liao-McPherson and Anouck Girard and Ilya Kolmanovsky},
journal= {arXiv preprint arXiv:2008.09240},
year = {2020}
}
Comments
2020 AAS/AIAA Astrodynamics Specialist Conference, Lake Tahoe, California (held virtually)