L2 norm-based control regularization for solving optimal control problems
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 …
switch between control limits or assume values interior to their admissible set, either due to …
Costate mapping for indirect trajectory optimization
Numerical solutions of optimal control problems are influenced by the appropriate choice of
coordinates. The proposed method based on the variational approach to map costates …
coordinates. The proposed method based on the variational approach to map costates …
Mapped adjoint control transformation method for low-thrust trajectory design
PJ Ayyanathan, E Taheri - Acta Astronautica, 2022 - Elsevier
Variational approach to optimal control theory converts trajectory optimization problems into
two-or multiple-point boundary-value problems, which consist of costates (ie, Lagrange …
two-or multiple-point boundary-value problems, which consist of costates (ie, Lagrange …
Three-degree-of-freedom hypersonic reentry trajectory optimization using an advanced indirect method
This study investigates a complicated reentry trajectory optimization problem for a reusable
launch vehicle (RLV) in the presence of two control constraints and three state path …
launch vehicle (RLV) in the presence of two control constraints and three state path …
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 …
solutions with singular control arcs. The presence of singular control arcs along with multiple …
Optimization of many-revolution minimum-time low-thrust trajectories using sundman transformation
E Taheri - AIAA Scitech 2021 Forum, 2021 - arc.aiaa.org
View Video Presentation: https://doi. org/10.2514/6.2021-1343. vid Minimum-time planet-
centric transfer maneuvers are investigated for spacecraft equipped with solar-powered, low …
centric transfer maneuvers are investigated for spacecraft equipped with solar-powered, low …
Entry trajectory optimization for mars science laboratory class missions using indirect uniform trigonometrization method
Application of traditional indirect optimization methods to optimal control problems (OCPs)
with control and state path constraints is not a straightforward task. However, recent …
with control and state path constraints is not a straightforward task. However, recent …
Multistage stabilized continuation for indirect optimal control of three-dimensional hypersonic trajectories
M Vedantam, MR Akella, MJ Grant - Journal of Spacecraft and Rockets, 2022 - arc.aiaa.org
This work presents the development of a multistaged stabilized continuation for the three-
dimensional unpowered hypersonic trajectory planning problem using indirect optimal …
dimensional unpowered hypersonic trajectory planning problem using indirect optimal …
[PDF][PDF] Optimal Range Capabilities for Low-Lift-to-Drag Ratio Entry Vehicles
Optimal solutions for maximizing the range of a low-lift-to-drag ratio entry vehicle at Mars are
explored. Optimal control problems are formulated to consider both vehicles using …
explored. Optimal control problems are formulated to consider both vehicles using …
[PDF][PDF] Acceleration-based switching surfaces for impulsive trajectory design in restricted three-body dynamics
We introduce an optimization tool for solving impulsive trajectory optimization problems
within the nonlinear restricted three-body dynamical models. The proposed tool uses …
within the nonlinear restricted three-body dynamical models. The proposed tool uses …