Active Control of Linear Periodic System with Two Unstable Modes.

Abstract

The attitude of a spinning symmetric satellite in an elliptical orbit was analyzed. The linearized equations were formed from which the stability was determined using Floquet theory. The majority of satellite configurations examined exhited two unstable modes. Control laws using pole placement techniques were implemented which stabilized the satellite. A scaler control provided stability but did not allow for exact pole placement of the controlled system. Multiple input control gave exact pole placement but required complicated time dependent gains.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA124698

Entities

People

  • Gregory E. Myers

Organizations

  • Air Force Institute of Technology

Tags

DTIC Thesaurus Topics

  • Angular Acceleration
  • Artificial Satellites
  • Case Studies
  • Circular Orbits
  • Computers
  • Control Systems
  • Control Theory
  • Differential Equations
  • Eigenvalues
  • Elliptical Orbits
  • Engineering
  • Equations
  • Equations Of Motion
  • Fourier Series
  • Moment Of Inertia
  • Numerical Integration
  • Plastic Explosives

Readers

  • Control Systems Engineering.

Technology Areas

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