Journal
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
Volume 20, Issue 17, Pages 2037-2053Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X09343024
Keywords
magnetorheological damper; smart structures; vibration reduction; semiactive control
Categories
Funding
- European Union
- Commission of Science and Technology of Spain (CICYT) [DPI-2005-08668-C03]
- government of Catalonia [SGR00296]
- Department for Innovation, University and Enterprise of the Government of Catalonia (Spain)
- National Science Foundation Graduate Research Fellowship
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The use of magnetorheological (MR) dampers for mitigating vibrations caused by seismic motions in civil engineering structures has attracted much interest in the scientific community because of the advantages of this class of device. It is known that MR dampers can generate high damping forces with low energy requirements and low cost of production. However, the complex dynamics that characterize MR dampers make difficult the control design for achieving the vibration reduction goals in an efficient manner. In this article, a semiactive controller based on the backstepping technique is proposed. The controller was applied to a three-story building with an MR damper at its first floor subjected to seismic motions. The performance of the controller was evaluated experimentally by means of real time hybrid testing.
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