System Identification Tools for Control Structure Interaction

Abstract

To meet the stringent closed-loop performance specifications of flexible space structures will require very accurate dynamical models for control design. Ground-testing is not likely to produce the on-orbit dynamics to within the requisite accuracy. This report examines the feasibility of on-orbit identification for robust control design. A simulation model of the ASTREX facility is used as a testbed. It is demonstrated that robust control design can be used to dictate the accuracy requirements of on-orbit identification. It is also shown that prior knowledge of the system dynamics together with on-orbit data can lead to an estimate of a frequency dependent uncertainty profile associated with an identified model. These methodologies are necessary for an on-orbit adaptive robust control design procedure.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1990
Accession Number
ADA219787

Entities

People

  • Guntekin M. Kabuli
  • Robert L. Kosut

Tags

Communities of Interest

  • Sensors
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Algorithms
  • Closed Loop Systems
  • Computations
  • Control Systems
  • Control Systems Engineering
  • Estimators
  • Frequency
  • Frequency Response
  • Identification
  • Kalman Filters
  • Multiple Input Multiple Output
  • Simulations
  • Space Systems
  • Specifications
  • Standards

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Robotics and Automation.
  • Systems Analysis and Design

Technology Areas

  • Space
  • Space - Orbital Debris
  • Space - Spacecraft Maneuvers