Baseline Experiment for Active Control of Structural Vibrations

Abstract

A baseline experiment is developed which can be used to evaluate control systems for large space structures. The experiment consists of an inverted cantilever beam. Proof mass actuators and a structural dynamics shaker provide the control forces, and integrated output of beam-mounted accelerometers provides velocity feedback. A programmable controller allows different control algorithms to be evaluated. System damping and frequency response are determined with and without the controller engaged, and experimental results are compared to analytical predictions. Modal suppression techniques are attempted in order to demonstrate active control of selected modes while maintaining overall system stability. (edc)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1989
Accession Number
ADA216194

Entities

People

  • David R. Jacques

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Accelerometers
  • Algorithms
  • Cantilever Beams
  • Closed Loop Systems
  • Computational Science
  • Computers
  • Control Systems
  • Engineering
  • Feedback
  • Frequency
  • Frequency Response
  • Jet Propulsion
  • Large Space Structures
  • Modal Analysis
  • Operating Systems
  • Physical Properties
  • Resonant Frequency

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Robotics and Automation.
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers