Y Kovryzhenko, E Taheri - The Journal of the Astronautical Sciences, 2023 - Springer
Optimal control problems (OCPs) with a control-affine Hamiltonian may lead to extremal solutions with singular control arcs. The presence of singular control arcs along with multiple …
K Saloglu, E Taheri - arXiv preprint arXiv:2408.15943, 2024 - arxiv.org
Solar-powered electric propulsion systems can operate in multiple modes and their operation is coupled to the power generated by solar arrays. However, the power produced …
W Qing, B Pan, Y Ran, C Zhu - Acta Astronautica, 2024 - Elsevier
This paper proposes a new type of smoothing homotopy method for solving general nonlinear optimal control problems via the indirect method, leveraging the Mainardi kernel …
The reachable set of controlled dynamical systems consist of the set of all possible reachable states from a given initial condition, over a certain period of time, under the …
S Sowell, E Taheri - AIAA Scitech 2024 Forum, 2024 - arc.aiaa.org
Solving practical optimal control problems (OCPs) that consist of multiple state, path, and control equality and inequality constraints can become challenging, but is necessary for …
We propose a novel generalized indirect method for solving complex nonlinear optimal control problems (OCPs). The method is a multi-control Generalized Vectorized …
S Sowell, E Taheri - Journal of Spacecraft and Rockets, 2024 - arc.aiaa.org
TRAJECTORY optimization plays a crucial role in the efficient design and operation of modern spacecraft [1]. Advances made in the field of space propulsion have led to the …
Solutions to nonlinear optimal control problems (OCPs) exhibit dispersions under model uncertainties and it is desirable to generate optimal solutions that exhibit less sensitivity to …
C Hofmann, F Topputo - Journal of Spacecraft and Rockets, 2024 - arc.aiaa.org
NUMEROUS new space missions attempt to satisfy the increas-ing need for exploration and exploitation of space. The space economy is rapidly increasing, and the interest in new …