Publication:
Optimal Guidance Command Generation and Tracking for Reusable Launch Vehicle Reentry

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Authors
Bollino, Kevin P.
Oppenheimer, Michael W.
Doman, Dave D.
Subjects
robust guidance and control architecture
autonomous reusable launch vehicles
Advisors
Date of Issue
2006-08-21
Date
August 21-24, 2006
Publisher
The American Institute of Aeronautics and Astronautics (AIAA)
Language
Abstract
The objective of this work is to develop a robust guidance and control architecture for autonomous reusable launch vehicles that incorporates elements of recent advances in the areas of optimal trajectory generation and reconfigurable control. This work integrates three separately developed methods to form a coherent architecture with the potential to manage control effectors failures, vehicle structural/aerodynamic degradation, uncertainty, and external disturbances. Outer-loop guidance commands in the form of body-frame angular rates (roll, pitch, and yaw) are generated from an optimal reference trajectory that is computed off-line with a direct pseudospectral method and then tracked by a reconfigurable inner-loop control law. The appropriate open-loop state histories from the psuedo-four-degree-of-freedom reference trajectory are converted using a modified back stepping approach that complements the inner-loop control law in a six-degree-of freedom simulation. The inner-loop control law is capable of reacting and compensating for off-nominal conditions by employing nonlinear reconfigurable control allocation, dynamic inversion, and model-following/anti-windup prefilters. The results show that the inner-loop control can adequately track the desired optimal guidance commands; thus, confirming the applicability of this control architecture for future development involving on-line, optimal trajectory generation and high-fidelity guidance and control for reentry vehicles.
Type
Conference Paper
Description
The article of record as published may be located at http://arc.aiaa.org
Proceedings of AIAA-Guidance, Navigation, and Control Conference and Exhibit ; Paper no. AIAA-2006-6691, Keystone, Colorado, Aug. 21-24, 2006
Series/Report No
Department
Mechanical & Astronautical Engineering
Organization
Mechanical and Aerospace Engineering (MAE)
Graduate School of Engineering and Applied Science (GSEAS)
Naval Postgraduate School (U.S.)
American Institute of Aeronautics and Astronautics (AIAA)
American Astronomical Society (AAS)
Identifiers
NPS Report Number
Sponsors
Funder
NA
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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