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Articles 31 - 32 of 32
Full-Text Articles in Space Vehicles
Control System Design And Simulation Of Spacecraft Formations, Daniel Dyer
Control System Design And Simulation Of Spacecraft Formations, Daniel Dyer
Master's Theses - Daytona Beach
The objective of this thesis is to analyze an effective control scheme for a formation of spacecraft, implement that control, and provide a 3-D simulation. The thesis first summarizes the progress made in formation flight control schemes and then provides a theoretical framework for the control system design. Using established control design techniques, feedback laws are constructed to control both rotational and translational motion of a group of spacecraft. Computer simulations are carried out using Matlab to generate the ephemeris and attitude data, which are exported to Satellite Tool Kit (STK) to create animations. The process by which Matlab is …
Cooperative Power-Limited Optimal Rendezvous Between Many Spacecraft, Virginie Guerre
Cooperative Power-Limited Optimal Rendezvous Between Many Spacecraft, Virginie Guerre
Master's Theses - Daytona Beach
The minimum fuel rendezvous problem between several power-limited low-thrust spacecraft neighboring either a circular or an elliptic orbit is investigated. Both cooperative and non cooperative maneuvers are studied. The maximum principle of Pontryagin is applied to the optimal control rendezvous problem of several spacecraft. The gravitational field models investigated are the Clohessy-Wiltshire field and the inverse-square gravity field. Numerical solutions using a shooting method and the finite difference method are used in order to determine the trajectories of the spacecraft. Unlike previous investigations, this work is not restricted to a rendezvous of two spacecraft around a circular orbit, but a …