State Estimation of International Space Station Centrifuge Rotor With Incomplete Knowledge of Disturbance Inputs

Abstract

This thesis develops a state estimation algorithm for the Centrifuge Rotor (CR) system where only relative measurements are available with limited knowledge of both rotor imbalance disturbances and International Space Station (ISS) thruster disturbances. A Kalman filter is applied to a plant model augmented with sinusoidal disturbance states used to model both the effect of the rotor imbalance and the 155 thrusters on the CR relative motion measurement. The sinusoidal disturbance states compensate for the lack of the availability of plant inputs for use in the Kalman filter. Testing confirms that complete disturbance modeling is necessary to ensure reliable estimation. Further testing goes on to show that increased estimator operational bandwidth can be achieved through the expansion of the disturbance model within the filter dynamics. In addition, Monte Carlo analysis shows the varying levels of robustness against defined plant/filter uncertainty variations.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2005
Accession Number
ADA433843

Entities

People

  • Michael J. Sullivan

Organizations

  • Rice University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Attitude Control Systems
  • Biological Sciences
  • Control Systems
  • Differential Equations
  • Engineering
  • Equations
  • Equations Of Motion
  • Estimators
  • Filters
  • Frequency Response
  • Kalman Filters
  • Linear Filtering
  • Mathematical Filters
  • Mechanical Engineering
  • Relative Motion

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Inertial Navigation Systems.
  • Robotics and Automation.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers