L2 norm-based control regularization for solving optimal control problems

E Taheri, N Li - IEEE Access, 2023 - ieeexplore.ieee.org
Solutions to practical optimal control problems (OCPs) may consist of control profiles that
switch between control limits or assume values interior to their admissible set, either due to …

Vectorized Trigonometric Regularization for Singular Control Problems with Multiple State Path Constraints

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 …

Co-optimization of spacecraft and low-thrust trajectory with direct methods

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 …

Mainardi smoothing homotopy method for solving nonlinear optimal control problems

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 …

Application of Indirect Multi-Stage Reachable Set Determination Algorithm for Low-Thrust Spacecraft Trajectory Optimization

S Bowerfind, E Taheri - AIAA SCITECH 2024 Forum, 2024 - arc.aiaa.org
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 …

Introducing the Tiger Optimization Software (TOPS): An Open-Source MATLAB Pseudospectral Solver

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 …

Generalized Vectorized Trigonometric Regularization for Solving Optimal Control Problems with Complex Solution Structures

Y Kovryzhenko, NP Nurre, E Taheri - AIAA Scitech 2024 Forum, 2024 - arc.aiaa.org
We propose a novel generalized indirect method for solving complex nonlinear optimal
control problems (OCPs). The method is a multi-control Generalized Vectorized …

Eclipse-Conscious Low-Thrust Trajectory Optimization Using Pseudospectral Methods and Control Smoothing Techniques

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 …

Reduced Desensitization Formulation for Optimal Control Problems

P Jawaharlal Ayyanathan, E Taheri - The Journal of the Astronautical …, 2024 - Springer
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 …

Convex Low-Thrust Trajectory Optimization with No-Thrust Constraints and Moving Target

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 …