S J Dyke et al 1996 Smart Mater. Struct. 5 565 doi:10.1088/0964-1726/5/5/006
Modeling and control of magnetorheological dampers for seismic response reduction
S J Dyke
, B F Spencer Jr
, M K Sain§ and J D Carlson||
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 applications, including having very low power requirements. This paper proposes a clipped-optimal 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.
- PACS
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46.70.-p Application of continuum mechanics to structures
46.40.Ff Resonance, damping and dynamic stability
83.80.Gv Electro- and magnetorheological fluids
- Subjects
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Soft matter, liquids and polymers
Instrumentation and measurement
- Dates
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Issue 5 (October 1996)
Received 6 June 1996, accepted for publication 9 August 1996
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Modeling and control of magnetorheological dampers for seismic response reduction
S J Dyke et al 1996 Smart Mater. Struct. 5 565
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