Active control of MDOF structures with supplemental electrorheological fluid dampers

Y. Ribakov, J. Gluck

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


A method for design of an active control system for multistorey structures using Electrorheological (ER) dampers is presented. Incorporated at various levels of a structural frame, ER dampers are used to improve the response of the structure during earthquakes. Optimal control theory was used to design the ER devices. The aim of the design is to find the most suitable combination of the minimum required forces produced by the ER dampers to obtain the optimal structural response. The mechanical response of ER fluid dampers is regulated by an electric field, depending on the displacements and velocities of the frame. Numerical analysis of an ER damped seven-storey structure is represented as an example. Significant improvement of the structural response was obtained using optimal active controlled ER dampers compared to passive controlled and uncontrolled structures.

Original languageEnglish
Pages (from-to)143-156
Number of pages14
JournalEarthquake Engineering and Structural Dynamics
Issue number2
StatePublished - Feb 1999
Externally publishedYes


  • Active control
  • Electrorheological fluid dampers
  • Optimal control theory


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