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Expected Deployment Dynamics of ProsedsThe control law for The Propulsive Small Expendable Deployment System (ProSEDS) deployment is a modification of the control routine that was successfully used in the flight of SEDS-II. Unlike SEDS, the tether of ProSEDS consists of different sections with different mechanical characteristics. A non-linear control trajectory in phase-space (i.e., the reference profile) is fed forward to the controller to guide the satellite, at the tether tip, to the desired final state under nominal conditions and no external perturbations. A linear feedback control is applied by the brake to keep the actual trajectory as close as possible to the reference. The paper also shows the results of simulations of deployment dynamics with and without noise. The control law has thus far been developed and tested on the ground for the original ProSEDS tether configuration of 15 km. A new reference will have to be designed and tested for other tether configurations.
Document ID
20030106425
Acquisition Source
Marshall Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Lorenzini, E. C. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Cosmo, M. L. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Welzyn, K. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2003
Subject Category
Spacecraft Design, Testing And Performance
Report/Patent Number
AIAA Paper 2003-5095
Report Number: AIAA Paper 2003-5095
Meeting Information
Meeting: 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Location: Huntsville, AL
Country: United States
Start Date: July 20, 2003
End Date: July 23, 2003
Sponsors: American Society for Electrical Engineers, Society of Automotive Engineers, Inc., American Society of Mechanical Engineers, American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NAG8-1605
Distribution Limits
Public
Copyright
Public Use Permitted.

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