Attitude Dynamics/Control of Dual-Body Spacecraft with Variable-Speed Control Moment Gyros
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Authors
Romano, M.
Agrawal, B.
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2004
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Abstract
The dynamics equations of a spacecraft consisting of two bodies mutually rotating around a common gimbal
axis are derived by the use of the Newton–Euler approach. One of the bodies contains a cluster of single-gimbal
variable-speed control moment gyros. The equations include all of the inertia terms and are written in a general
form, valid for any cluster configurations and any number of actuators in the cluster. A guidance algorithm has
been developed under the assumtion that the two bodies of the spacecraft are optically coupled telescopes that relay
laser signals. The reference maneuver is found by the imposition of the connectivity between the source and the
target on the ground. A new nonlinear control law is designed for the spacecraft attitude and joint rotation by the
use of Lyapunov’s direct method. An acceleration-based steering law is used for the variable-speed control moment
gyros. The analytical results are tested by numerical simulations conducted for both regulation and tracking cases.The dynamics equations of a spacecraft consisting of two bodies mutually rotating around a common gimbal
axis are derived by the use of the Newton–Euler approach. One of the bodies contains a cluster of single-gimbal
variable-speed control moment gyros. The equations include all of the inertia terms and are written in a general
form, valid for any cluster configurations and any number of actuators in the cluster. A guidance algorithm has
been developed under the assumtion that the two bodies of the spacecraft are optically coupled telescopes that relay
laser signals. The reference maneuver is found by the imposition of the connectivity between the source and the
target on the ground. A new nonlinear control law is designed for the spacecraft attitude and joint rotation by the
use of Lyapunov’s direct method. An acceleration-based steering law is used for the variable-speed control moment
gyros. The analytical results are tested by numerical simulations conducted for both regulation and tracking cases.The dynamics equations of a spacecraft consisting of two bodies mutually rotating around a common gimbal
axis are derived by the use of the Newton–Euler approach. One of the bodies contains a cluster of single-gimbal
variable-speed control moment gyros. The equations include all of the inertia terms and are written in a general
form, valid for any cluster configurations and any number of actuators in the cluster. A guidance algorithm has
been developed under the assumtion that the two bodies of the spacecraft are optically coupled telescopes that relay
laser signals. The reference maneuver is found by the imposition of the connectivity between the source and the
target on the ground. A new nonlinear control law is designed for the spacecraft attitude and joint rotation by the
use of Lyapunov’s direct method. An acceleration-based steering law is used for the variable-speed control moment
gyros. The analytical results are tested by numerical simulations conducted for both regulation and tracking cases.The dynamics equations of a spacecraft consisting of two bodies mutually rotating around a common gimbal
axis are derived by the use of the Newton–Euler approach. One of the bodies contains a cluster of single-gimbal
variable-speed control moment gyros. The equations include all of the inertia terms and are written in a general
form, valid for any cluster configurations and any number of actuators in the cluster. A guidance algorithm has
been developed under the assumtion that the two bodies of the spacecraft are optically coupled telescopes that relay
laser signals. The reference maneuver is found by the imposition of the connectivity between the source and the
target on the ground. A new nonlinear control law is designed for the spacecraft attitude and joint rotation by the
use of Lyapunov’s direct method. An acceleration-based steering law is used for the variable-speed control moment
gyros. The analytical results are tested by numerical simulations conducted for both regulation and tracking cases.The dynamics equations of a spacecraft consisting of two bodies mutually rotating around a common gimbal
axis are derived by the use of the Newton–Euler approach. One of the bodies contains a cluster of single-gimbal
variable-speed control moment gyros. The equations include all of the inertia terms and are written in a general
form, valid for any cluster configurations and any number of actuators in the cluster. A guidance algorithm has
been developed under the assumtion that the two bodies of the spacecraft are optically coupled telescopes that relay
laser signals. The reference maneuver is found by the imposition of the connectivity between the source and the
target on the ground. A new nonlinear control law is designed for the spacecraft attitude and joint rotation by the
use of Lyapunov’s direct method. An acceleration-based steering law is used for the variable-speed control moment
gyros. The analytical results are tested by numerical simulations conducted for both regulation and tracking cases.The dynamics equations of a spacecraft consisting of two bodies mutually rotating around a common gimbal
axis are derived by the use of the Newton–Euler approach. One of the bodies contains a cluster of single-gimbal
variable-speed control moment gyros. The equations include all of the inertia terms and are written in a general
form, valid for any cluster configurations and any number of actuators in the cluster. A guidance algorithm has
been developed under the assumtion that the two bodies of the spacecraft are optically coupled telescopes that relay
laser signals. The reference maneuver is found by the imposition of the connectivity between the source and the
target on the ground. A new nonlinear control law is designed for the spacecraft attitude and joint rotation by the
use of Lyapunov’s direct method. An acceleration-based steering law is used for the variable-speed control moment
gyros. The analytical results are tested by numerical simulations conducted for both regulation and tracking cases.
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The article of record as published may be found at http://dx.doi.org/10.2514/1.2564
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Department of Mechanical and Aerospace Engineering
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AIAA Journal of Guidance, Control, and Dynamics, Vol. 27, No. 4, 2004, pp. 513-525.
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This publication is a work of the U.S. Government as defined
in Title 17, United States Code, Section 101. As such, it is in the
public domain, and under the provisions of Title 17, United States
Code, Section 105, is not copyrighted in the U.S.