Taming the 1.2 m Telescope

Abstract

Achievable residual jitter on the 1.2 m telescope at MSSS has historically been limited in moderate wind conditions due to the combination of the dynamics associated with the twin telescopes on the common declination axis shaft and the related control system behavior. The lightly damped, low frequency fundamental vibration mode shape of the telescopes rotating out of phase on the common declination axis shaft severely degraded the performance of the prior controllers. The relatively poor historic performance was due to a combination of the low error rejection of external disturbances, and the controller exciting the mode. The new control architecture described in this paper has made it possible to achieve greatly improved pointing performance.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2013
Accession Number
ADA591375

Entities

People

  • Daryn Kono
  • Dave Greenwald
  • Dennis Liang
  • Earl Spillar
  • Kirk Lohnes
  • Matt Edwards
  • Steven Griffin
  • Virginia Wright

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Accelerometers
  • Air Force
  • Air Force Research Laboratories
  • Bandwidth
  • Control Systems
  • Dynamics
  • Excitation
  • Finite Element Analysis
  • Frequency
  • Information Operations
  • Power Spectra
  • Space Surveillance
  • Stiffness
  • Telescopes
  • Transfer Functions
  • Vibration

Fields of Study

  • Physics

Readers

  • Astronomy and Astrophysics.
  • Control Systems Engineering.
  • Image Processing and Computer Vision.

Technology Areas

  • Space
  • Space - Space Objects
  • Space - Spacecraft Maneuvers