Details

Autor(en) / Beteiligte

• Mei, Hao
• Damaren, Christopher J.
• Zhan, Xingqun

Titel

Hybrid feedback pseudospectral method for geostationary debris removal using solar radiation pressure and impulsive thrusts

Ist Teil von

• Aerospace systems (Online), 2023-03, Vol.6 (1), p.37-51

Ort / Verlag

Singapore: Springer Nature Singapore

Erscheinungsjahr

2023

Link zum Volltext

Quelle

SpringerLink

Beschreibungen/Notizen

• This paper proposes a hybrid feedback pseudospectral (PS) method for solving hybrid non-convex non-linear optimal control problems. The hybrid dynamic system is defined as a continuous dynamic system with discontinuities in state, and the discontinuities are governed by discrete dynamic equations. First, the local Legendre–Gauss–Lobatto (LGL) PS method is extended to a hybrid LGL PS method which is capable of solving hybrid non-linear optimal control problems. The extension is accomplished by breaking the state continuity constraints between the segments and governing the dynamics of the LGL points on segment boundaries using discrete dynamic equations. Then, a hybrid feedback PS method is proposed, in which a hybrid linear feedback controller is developed to stabilize the open-loop hybrid LGL PS method when it converges to a local minimum. The proposed hybrid feedback PS method is applied to the removal of Geostationary debris to the GEO graveyard region using solar radiation pressure (SRP) and impulsive thrusts. Simulations indicate that the GEO debris removal is achieved using the proposed hybrid feedback PS method. The terminal state error of the semi-major axis and eccentricity are reduced to +0.08 km and - 8.04 · 10 - 7 , respectively, and an amount of 2.73 m / s impulsive thrust is consumed.