rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Maneuver and vibration control of flexible space structures by Lyapunov stability theory
  name:
    name part: Bang, Hyochoong
    name part: 1964-
    role:
      role term: creator
  name:
    name part: Junkins, John L.
    role:
      role term: degree supervisor.
  name:
    name part: Chen, Goong
    role:
      role term: degree committee member.
  name:
    name part: Kurdila, Andrew J.
    role:
      role term: degree committee member.
  name:
    name part: Vadali, Srinivas R.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1992
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xi, 191 leaves : illustrations ; 29 cm
  abstract: This research is primarily aimed at developing control laws for maneuvers and vibration suppression of flexible space structures by using Lyapunov stability theory. The key point of the Lyapunov approach for flexible structure is to design stabilizing control laws by Lyapunov's second method without discretizing the partial differential equations modeling the original flexible systems into finite dimensional ordinary differential equations. The main analysis is focused on single axis slew maneuvers, for which both a constant gain feedback law and a near-minimum-time tracking control law are investigated. Also, results from ground-based experiments are reported which support the practical utility of the control laws By optimization of the Lyapunov control laws, a strategy for selecting a best combination of feedback gains and shaping of the reference maneuver is suggested. The optimization is carried out with the admissible solutions constrained to satisfy the Lyapunov stability conditions. The objective is to find the stable solution which extremizes a prescribed closed loop performance optimality criterion. Optimization of the reference trajectory, in addition to feedback control gains, enables one to find an optimum reference motion which is parameterized through a shaping parameter which controls the sharpness of the switching in a near-bang-bang maneuver. As a performance objective for optimization, an index which measures the trade-off between residual energy and maneuver time is used. A generalization of the Lyapunov approach is introduced, which applies to hybrid coordinate discrete/distributed parameter systems. This generalization makes use of a novel hybrid version of Hamilton's canonical equations of the systems, which is an extension of the corresponding classical results for discrete coordinate systems. The rather general form of the resulting stable family of control laws is developed in terms of the Hamiltonian of a general class of nonlinear hybrid c…
  note: Typescript (photocopy).
  note: Vita.
  note: "Major subject: Aerospace Engineering."
  note: Ph. D. Texas A & M University 1992
  note: Includes bibliographical references.
  subject:
    topic: Large space structures (Astronautics)
  subject:
    topic: Control theory
  subject:
    topic: Lyapunov functions
  subject:
    topic: Major aerospace engineering
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  record info:
    record content source: TXA
    record creation date: 931006
    record change date: 20200904152611.0
    record identifier: in00001160510
    language of cataloging:
      language term: eng