Flexible Structure Control in the Frequency Domain

Abstract

New techniques to analyze structure and controller interaction in the frequency domain are defined and used to determine the modal damping requirements of the spacecraft structure to assure control system stability and performance. Gain and phase versus frequency (Bode and Nyquist) techniques are described which predict system stability in the presence of uncontrolled structural modes and errors in a priori natural frequencies and quantify control system margin for these modes. The techniques are applied to an optimally controlled single axis satellite with very large solar arrays. Control system actuator and sensor configurations are based upon system controllability and observability of four dominant structural modes. Verification of the technique is by simulation.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1984
Accession Number
ADP004733

Entities

People

  • Arun Das
  • R. Harding

Organizations

  • General Electric

Tags

Communities of Interest

  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Attitude Control Systems
  • Bandwidth
  • Control Systems
  • Differential Equations
  • Eigenvalues
  • Equations
  • Flexible Structures
  • Frequency
  • Frequency Domain
  • Frequency Response
  • Multiple Input Multiple Output
  • Resonant Frequency
  • Simulations
  • Solar Panels
  • Spacecraft
  • Systems Engineering
  • Transfer Functions

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Materials Science and Engineering.
  • Robotics and Automation.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers