Algorithms for Active Vibration Isolation on Spacecraft Using a Stewart Platform

Abstract

This paper presents the recent development in algorithms for active vibration isolation on spacecraft using a Stewart platform. The multiple error least mean square (LMS) algorithm and the clear box algorithm have been implemented on these platforms and several enhancements have been made to the clear box algorithm. Based on experimental results, it is concluded that the multiple error LMS algorithm is preferred for vibration isolation when a disturbance correlated signal is available. In the absence of such a signal, the clear box algorithm is the method of choice. Among the implementations of the clear box algorithm, the sine/cosine method is preferred for handling time-invariant disturbance frequencies, the adaptive method for rapidly varying disturbance frequencies, and the frequency-domain method for a large number of time invariant disturbance frequencies.

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Document Details

Document Type
Technical Report
Publication Date
Jun 16, 2004
Accession Number
ADA598827

Entities

People

  • Brij N. Agrawal
  • Hong-jen Chen

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Amplifiers
  • Background Noise
  • Computer Programming
  • Control Systems
  • Eigenvalues
  • Frequency
  • Frequency Domain
  • Frequency Response
  • Jet Propulsion
  • Multiple Input Multiple Output
  • Platforms
  • Quadratic Programming
  • Spacecraft
  • Steady State
  • Time Domain
  • Vibration

Fields of Study

  • Engineering

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Robotics and Automation.
  • Structural Dynamics.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers