Adaptive control for Mars atmospheric flight
The new vision for space exploration will focus on sending humans to the moon and eventually to Mars. This endeavor presents new challenges that are critically different from the past experience with robotic missions to Mars. For example, the strict landing accuracy requirements for a manned space ve...
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fttexasamuniv:oai:oaktrust.library.tamu.edu:1969.1/ETD-TAMU-1400 2023-07-16T04:00:45+02:00 Adaptive control for Mars atmospheric flight Restrepo, Carolina Isabel Valasek, John Hurtado, John Junkins, John Schneider, William 2009-05-15 electronic application/pdf born digital https://hdl.handle.net/1969.1/ETD-TAMU-1400 en_US eng https://hdl.handle.net/1969.1/ETD-TAMU-1400 Mars Entry Control Guidance Atmosphere Adaptive Control SAMI MRAC Book Thesis Electronic Thesis text 2009 fttexasamuniv 2023-06-27T23:04:34Z The new vision for space exploration will focus on sending humans to the moon and eventually to Mars. This endeavor presents new challenges that are critically different from the past experience with robotic missions to Mars. For example, the strict landing accuracy requirements for a manned space vehicle make it necessary to fly a controlled entry trajectory rather than a more robust ballistic entry trajectory used for some robotic missions. The large variations in Mars atmospheric properties make a controlled entry and a safe precision landing for manned missions a difficult engineering problem. Model reference adaptive control is a candidate solution for the Mars entry control problem. This type of controller has an adaptation mechanism that reduces tracking errors in the presence of uncertain parameters such as atmospheric density or vehicle properties. This thesis develops two different adaptive control systems for the Mars ellipsled, a vehicle which is much larger than those that carried robotic payloads to Mars in the past. A sample mission will have multiple ellipsleds arriving at Mars carrying an assortment of payloads. It is of critical importance that the vehicles land in close proximity to each other to best assure that the crew has manageable access to their payloads. The scope of this research encompasses the atmospheric flight of the ellipsled, starting at the entry interface point through the final parachute deployment. Tracking performance of an adaptive controller for prescribed entry trajectories in the pres¬ence of atmospheric and vehicle model uncertainties is shown here. Both adaptive controllers studied in this thesis demonstrate successful adaptation to uncertainties in the Martian atmosphere as well as errors in the vehicle properties. Based on these results, adaptive control is a potential option for controlling Mars entry vehicles. Book sami Texas A&M University Digital Repository |
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Texas A&M University Digital Repository |
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English |
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Mars Entry Control Guidance Atmosphere Adaptive Control SAMI MRAC |
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Mars Entry Control Guidance Atmosphere Adaptive Control SAMI MRAC Restrepo, Carolina Isabel Adaptive control for Mars atmospheric flight |
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Mars Entry Control Guidance Atmosphere Adaptive Control SAMI MRAC |
description |
The new vision for space exploration will focus on sending humans to the moon and eventually to Mars. This endeavor presents new challenges that are critically different from the past experience with robotic missions to Mars. For example, the strict landing accuracy requirements for a manned space vehicle make it necessary to fly a controlled entry trajectory rather than a more robust ballistic entry trajectory used for some robotic missions. The large variations in Mars atmospheric properties make a controlled entry and a safe precision landing for manned missions a difficult engineering problem. Model reference adaptive control is a candidate solution for the Mars entry control problem. This type of controller has an adaptation mechanism that reduces tracking errors in the presence of uncertain parameters such as atmospheric density or vehicle properties. This thesis develops two different adaptive control systems for the Mars ellipsled, a vehicle which is much larger than those that carried robotic payloads to Mars in the past. A sample mission will have multiple ellipsleds arriving at Mars carrying an assortment of payloads. It is of critical importance that the vehicles land in close proximity to each other to best assure that the crew has manageable access to their payloads. The scope of this research encompasses the atmospheric flight of the ellipsled, starting at the entry interface point through the final parachute deployment. Tracking performance of an adaptive controller for prescribed entry trajectories in the pres¬ence of atmospheric and vehicle model uncertainties is shown here. Both adaptive controllers studied in this thesis demonstrate successful adaptation to uncertainties in the Martian atmosphere as well as errors in the vehicle properties. Based on these results, adaptive control is a potential option for controlling Mars entry vehicles. |
author2 |
Valasek, John Hurtado, John Junkins, John Schneider, William |
format |
Book |
author |
Restrepo, Carolina Isabel |
author_facet |
Restrepo, Carolina Isabel |
author_sort |
Restrepo, Carolina Isabel |
title |
Adaptive control for Mars atmospheric flight |
title_short |
Adaptive control for Mars atmospheric flight |
title_full |
Adaptive control for Mars atmospheric flight |
title_fullStr |
Adaptive control for Mars atmospheric flight |
title_full_unstemmed |
Adaptive control for Mars atmospheric flight |
title_sort |
adaptive control for mars atmospheric flight |
publishDate |
2009 |
url |
https://hdl.handle.net/1969.1/ETD-TAMU-1400 |
genre |
sami |
genre_facet |
sami |
op_relation |
https://hdl.handle.net/1969.1/ETD-TAMU-1400 |
_version_ |
1771549887381372928 |