Multi-objective minimum time optimal control for low-thrust trajectory design

Abstract

We propose a reachability approach for infinite and finite horizon multi-objective optimization problems for low-thrust spacecraft trajectory design. The main advantage of the proposed method is that the Pareto front can be efficiently constructed from the zero level set of the solution to a Hamilton-Jacobi-Bellman equation. We demonstrate the proposed method by applying it to a low-thrust spacecraft trajectory design problem. By deriving the analytic expression for the Hamiltonian and the optimal control policy, we are able to efficiently compute the backward reachable set and reconstruct the optimal trajectories. Furthermore, we show that any reconstructed trajectory will be guaranteed to be weakly Pareto optimal. The proposed method can be used as a benchmark for future research of applying reachability analysis to low-thrust spacecraft trajectory design.

Publication
In 2021 European Control Conference (ECC), Delft, Netherlands, 2021, pp. 1975-1980
Nikolaus Vertovec
Nikolaus Vertovec
Junior Fellow in Artificial Intelligence

My research interests include safety critical optimal control with a focus on learning based approaches.

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