Modeling and control of magnetorheological dampers for seismic response reduction

S. J. Dyke, B. F. Spencer, M. K. Sain, J. D. Carlson

Research output: Contribution to journalArticlepeer-review

Abstract

Control of civil engineering structures for earthquake hazard mitigation represents a relatively new area of research that is growing rapidly. Control systems for these structures have unique requirements and constraints. For example, during a severe seismic event the external power to a structure may be severed, rendering control schemes relying on large external power supplies ineffective. Magnetorheological (MR) dampers are a new class of devices that mesh well with the requirements and constraints of seismic application, including having very low power requirements. This paper proposes a clipped-optimel control strategy based on acceleration feedback for controlling MR dampers to reduce structural responses due to seismic loads. A numerical example, employing a newly developed model that accurately portrays the salient characteristics of the MR dampers, is presented to illustrate the effectiveness of the approach.

Original languageEnglish (US)
Pages (from-to)565-575
Number of pages11
JournalSmart Materials and Structures
Volume5
Issue number5
DOIs
StatePublished - Oct 1996
Externally publishedYes

ASJC Scopus subject areas

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

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