Modelling and Control of a Magneto-Rheological Vibration Damper

Abstract

In this report, the authors describe a study to investigate the feasibility of developing a controllable vibration isolator based upon an MR Squeeze-flow damper. The experiments demonstrate conclusively that it is feasible to control the transmissibility of a vibration isolator by manipulating the current supplied to an MR damper. The results also show that significant electromagnetic forces are generated by the damping device in the absence of MR fluid. There are two important implications of this latter result. First, in some applications, purely electromagnetic control of transmissibility may be possible - Second, electromagnetic forces do need to be included in an effective mathematical model. The available mathematical model was used in a numerical study to examine feedback control of the vibration isolator. The study shows that, using a simple switching strategy, significant performance gains might be available.

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Document Details

Document Type
Technical Report
Publication Date
Mar 31, 2000
Accession Number
ADA380785

Entities

People

  • A. Godbehere
  • A. R. Johnson
  • N. D. Sims
  • P. H. Mellor
  • R. Stanway

Organizations

  • University of Sheffield

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Closed Loop Systems
  • Computational Fluid Dynamics
  • Computational Science
  • Control Systems
  • Data Acquisition
  • Digital Signal Processing
  • Electric Fields
  • Electromagnetic Fields
  • Fluid Dynamics
  • Fluid Flow
  • Magnetic Fields
  • Materials
  • Measurement
  • Mechanical Engineering
  • Mechanics
  • Resonant Frequency
  • Test Facilities

Readers

  • Robotics and Automation.
  • Structural Dynamics.
  • Technical Research and Report Writing.