Shape Change Maneuvers for Attitude Control of Underactuated Satellites.
An asymptotically stable set point control law is introduced for attitude control of the underactuated spacecraft of a satellite system through its appendage shape changes. It is proposed that rotational maneuvers of the spacecraft are possible while simultaneously achieving a desired shape if the t...
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2005
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Shape Change Maneuvers for Attitude Control of Underactuated Satellites. Ashrafiuon, Hashem. Erwin, R. Scott. An asymptotically stable set point control law is introduced for attitude control of the underactuated spacecraft of a satellite system through its appendage shape changes. It is proposed that rotational maneuvers of the spacecraft are possible while simultaneously achieving a desired shape if the total angular momentum is conserved and the system is initially motionless. In addition, it is also proposed that shape changes can be used to stabilize a tumbling satellite system with only one reaction wheel. The approach assumes that appendage shape changes can result in effective changes in inertia properties. A robust control algorithm based on sliding mode approach was proposed for stabilization and tracking control of underactuated multibody mechanical systems in an earlier work. It was shown that the construction of first order sliding surfaces leads only to marginally stable control law when angular momentum is conserved and equals zero. Here, we propose that the marginally stable control laws can be put together to achieve an asymptotically stable discontinuous control law. The control law essentially uses shape changes leading to changes in effective moments of inertia of the system about the axis of rotation. It is proposed that repetitive application of such maneuvers will lead to asymptotic convergence of the shape to the desired configuration. The controller is applied to the model of an existing complex satellite system and the relevant maneuvers are discussed. 2005 Villanova Faculty Authorship vudl:173915 2005 American Control Conference, June 2005, 895-900. en |
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Shape Change Maneuvers for Attitude Control of Underactuated Satellites. |
| dc.creator_txt_mv |
Ashrafiuon, Hashem. Erwin, R. Scott. |
| dc.description_txt_mv |
An asymptotically stable set point control law is
introduced for attitude control of the underactuated
spacecraft of a satellite system through its appendage shape
changes. It is proposed that rotational maneuvers of the
spacecraft are possible while simultaneously achieving a
desired shape if the total angular momentum is conserved and
the system is initially motionless. In addition, it is also
proposed that shape changes can be used to stabilize a
tumbling satellite system with only one reaction wheel. The
approach assumes that appendage shape changes can result in
effective changes in inertia properties. A robust control
algorithm based on sliding mode approach was proposed for
stabilization and tracking control of underactuated multibody
mechanical systems in an earlier work. It was shown that the
construction of first order sliding surfaces leads only to
marginally stable control law when angular momentum is
conserved and equals zero. Here, we propose that the
marginally stable control laws can be put together to achieve
an asymptotically stable discontinuous control law. The
control law essentially uses shape changes leading to changes
in effective moments of inertia of the system about the axis of
rotation. It is proposed that repetitive application of such
maneuvers will lead to asymptotic convergence of the shape to
the desired configuration. The controller is applied to the
model of an existing complex satellite system and the relevant
maneuvers are discussed. |
| dc.date_txt_mv |
2005 |
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Villanova Faculty Authorship |
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vudl:173915 |
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2005 American Control Conference, June 2005, 895-900. |
| dc.language_txt_mv |
en |
| author |
Ashrafiuon, Hashem. Erwin, R. Scott. |
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Ashrafiuon, Hashem. Erwin, R. Scott. Shape Change Maneuvers for Attitude Control of Underactuated Satellites. |
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Ashrafiuon, Hashem. Erwin, R. Scott. |
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2005 American Control Conference, June 2005, 895-900. |
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Villanova Faculty Authorship |
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Ashrafiuon, Hashem. |
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2005 |
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Shape Change Maneuvers for Attitude Control of Underactuated Satellites. |
| description |
An asymptotically stable set point control law is
introduced for attitude control of the underactuated
spacecraft of a satellite system through its appendage shape
changes. It is proposed that rotational maneuvers of the
spacecraft are possible while simultaneously achieving a
desired shape if the total angular momentum is conserved and
the system is initially motionless. In addition, it is also
proposed that shape changes can be used to stabilize a
tumbling satellite system with only one reaction wheel. The
approach assumes that appendage shape changes can result in
effective changes in inertia properties. A robust control
algorithm based on sliding mode approach was proposed for
stabilization and tracking control of underactuated multibody
mechanical systems in an earlier work. It was shown that the
construction of first order sliding surfaces leads only to
marginally stable control law when angular momentum is
conserved and equals zero. Here, we propose that the
marginally stable control laws can be put together to achieve
an asymptotically stable discontinuous control law. The
control law essentially uses shape changes leading to changes
in effective moments of inertia of the system about the axis of
rotation. It is proposed that repetitive application of such
maneuvers will lead to asymptotic convergence of the shape to
the desired configuration. The controller is applied to the
model of an existing complex satellite system and the relevant
maneuvers are discussed. |
| title |
Shape Change Maneuvers for Attitude Control of Underactuated Satellites. |
| title_full |
Shape Change Maneuvers for Attitude Control of Underactuated Satellites. |
| title_fullStr |
Shape Change Maneuvers for Attitude Control of Underactuated Satellites. |
| title_full_unstemmed |
Shape Change Maneuvers for Attitude Control of Underactuated Satellites. |
| title_short |
Shape Change Maneuvers for Attitude Control of Underactuated Satellites. |
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shape change maneuvers for attitude control of underactuated satellites. |
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2005 |
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2005-01-01T00:00:00Z |
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