Neighboring optimal guidance for aeroassisted noncoplanar orbital transferThe fuel-optimal control problem in aeroassisted noncoplanar orbital transfer is addressed. The equations of motion for the atmospheric maneuver are nonlinear and the optimal (nominal) trajectory and control are obtained. In order to follow the nominal trajectory under actual conditions, a neighboring optimum guidance scheme is designed using linear quadratic regulator theory for onboard real-time implementation. One of the state variables is used as the independent variable in preference to the time. The weighting matrices in the performance index are chosen by a combination of a heuristic method and an optimal modal approach. The necessary feedback control law is obtained in order to minimize the deviations from the nominal conditions. The results are presented to a typical aeroassisted noncoplanar orbital transfer problem.
Document ID
19910062576
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Naidu, D. S. (Idaho State University Pocatello, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking