AuthorLin, Yeong Ching
AdvisorVincent, Thomas L.
MetadataShow full item record
PublisherThe University of Arizona.
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
AbstractAnalytical and experimental comparisons are presented for two control laws used in a laboratory structure designed to simulate large space structures. The proposed control laws are based on minimizing the amount of energy imparted to the flexible modes during the maneuver. Structure modeling and various control techniques are discussed. In the proposed modeling procedure, the finite element method is used to describe the equations of motion for a given structure. The main objective of the analysis is to determine optimal actuator locations and the command forces to the actuators such that the structure will follow a desired trajectory while minimizing the internal energy to the flexible modes. The numerical simulations are verified experimentally using a digital implementation of the control laws. Critical issues related to experimental implementation are discussed. A closed-loop control system design which will take care of nonlinearities and uncertain inputs is included in this dissertation.
Degree ProgramAerospace and Mechanical Engineering