Siddiqi Abstract

Home CV Publications Students News Personal		Thesis Abstract: Theory and Application of Reconfigurability in Space Systems Architecture
		Traditionally, space systems have been built for pre-defined missions and fixed requirements. Some of the next generation space exploration missions however are much different. They last longer, explore deeper, encounter unknown conditions, and are costs constrained. There is thus an increasing emphasis on cost, survivability, reliability, and flexibility of missions which in turn dictates the need for reconfigurable space systems. This need for reconfigurable space systems makes a rigorous study of reconfigurability aspects extremely important. As part of this research, a theory of reconfigurability will be developed that will provide treatment of reconfigurable systems on an abstract level, and will have particular focus for space systems and systems of systems (SoS) such as satellites, satellite constellations, planetary rovers (for space exploration) etc. It will provide methodologies for determining if and how much reconfigurability is needed, and where and how it should be embedded. Two case studies involving information processing systems (satellite constellations) and mass transporting systems (planetary surface vehicles) will be used for studying the application of this theory in architecting space systems that require reconfigurability either due to uncertainty or for achieving multi-functionality.
		PUBLICATIONS: de Weck O., U. Scialom and A. Siddiqi, “Optimal Reconfiguration of Satellite Constellations with the Auction Algorithm, AIAA-2004-3162, 22nd AIAA International Communications Satellite Systems Conference and Exhibit 2004 (ICSSC), Monterey, California, May 9-12, 2004 Siddiqi, A., Mellein, J., and de Weck, O.L “Optimal Reconfigurations for Increasing Capacity of Communication Satellite Constellations” AIAA-2005-2065, 1st AIAA Multidisciplinary Design Optimization Specialist Conference, Austin, Texas, April 18-21, 2005 Siddiqi, A.,de Weck, O.L, and Hoffman, J “Sustainability in System Architectures through Reconfigurability: A Case Study of Planetary Surface Vehicles” Accepted for the 56th International Astronautical Congress, Fukuoka, Japan, October 2005 Song, Y., Siddiqi, A, and Hall, S.R., “System Identification of Linear Time Periodic Systems” (in preparation for submission)