Date of Award
9-2021
Document Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Department of Aeronautics and Astronautics
First Advisor
Richard G. Cobb, PhD
Abstract
For multi-body, flexible systems, the ability to achieve rapid reorientation maneuvers can be impacted by nonlinear dynamics and uncertainty in the model parameters impacting the ability to achieve an optimal trajectory computed using nominal parameter values. Trajectory sensitivity to parameter variations increases final pointing error and residual vibrational energy in the system. This manuscript explores using pseudospectral methods to generate robust optimal control trajectories minimizing trajectory sensitivity to parameter variations and derives maneuvers minimizing residual energy and pointing error. The robustness of open-loop optimal control is compared to a standard maneuver derived using traditional methods demonstrating the ability to simultaneously increase payload availability while minimizing final pointing error and system energy.
AFIT Designator
AFIT-ENY-DS-21-S-090
DTIC Accession Number
AD1175660
Recommended Citation
Bishop, Brian W., "Pseudospectral Methods of Robust Optimal Motion Planning for Multi-aperture Space Systems with Motion and Vibration Compensation" (2021). Theses and Dissertations. 6898.
https://scholar.afit.edu/etd/6898