Fiscal Year	2007
Division	Graduate School of Engineering & Applied Science
Department	Mechanical & Aerospace Engineering
Investigator(s)	Agrawal, Jr., Brij N.
Sponsor	National Reconnaissance Office (DoD)
Summary	The objective of this research program is to develop and evaluate different techniques for on-orbit system identification (spacecraft inertia and structural frequencies) and slew maneuver control of flexible spacecraft to minimize settling time. The research performed in 2005 showed both analytically and experimentally that advanced control techniques can improve the performance for spacecraft pointing and reduce the effective time for a slew maneuver when they are applied to a single-axis flexible spacecraft control. During the proposed research program, these advanced control techniques will be applied to three-axis control of a spacecraft. During Phase I the tasks will include modeling of a three-axis flexible spacecraft, on-line system identification, on-line trajectory and control profile generation and Control Moment Gyro control for slew maneuvers. Under Phase II, flexible appendage will be added to three axis simulator, the techniques developed in Phase I in system identification and control will be implemented at the test bed and slew maneuvers will be performed on the experimental test bed to validate the new control techniques.
Keywords	Satellites and Computers
Publications	Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal
Data	Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal