Closed-Form Specified-Fuel Commands for Two Flexible Modes

A method is proposed for generating on-off commands for rest-to-rest slewing of two-mode systems. When the on-off actuators are thruster jets, the command profiles can be designed to use a specified amount of fuel. When the on-off actuators are motors or valves, the method can accommodate a specifie...

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Bibliographic Details
Published in:Journal of guidance, control, and dynamics control, and dynamics, 2007-11, Vol.30 (6), p.1590-1596
Main Authors: Sung, Yoon-Gyung, Singhose, William E
Format: Article
Language:English
Subjects:
Applied sciences
College professors
Computer science
control theory
systems
Control theory. Systems
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Mechanical engineering
Optimization
Physics
Solid dynamics (ballistics, collision, multibody system, stabilization...)
Solid mechanics
Velocity
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Summary:A method is proposed for generating on-off commands for rest-to-rest slewing of two-mode systems. When the on-off actuators are thruster jets, the command profiles can be designed to use a specified amount of fuel. When the on-off actuators are motors or valves, the method can accommodate a specified velocity limit. A benefit of the procedure is that it uses closed-form functions of the system parameters and desired maneuver. The performance of the commands is evaluated in terms of slewing speed, maximum transient deflection, and robustness to system uncertainty. The proposed method is demonstrated with a numerical simulation of a benchmark two-mode spacecraft model and experimentally validated on a bridge crane exhibiting double-pendulum dynamics.
ISSN:0731-5090
1533-3884
DOI:10.2514/1.29954