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Real-time hybrid simulation for structural control performance assessment

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Abstract

Real-time hybrid simulation is an attractive method to evaluate the response of structures under earthquake loads. The method is a variation of the pseudodynamic testing technique in which the experiment is executed in real time, thus allowing investigation of structural systems with rate-dependent components. Real-time hybrid simulation is challenging because it requires performance of all calculations, application of displacements, and acquisition of measured forces, within a very small increment of time. Furthermore, unless appropriate compensation for actuator dynamics is implemented, stability problems are likely to occur during the experiment. This paper presents an approach for real-time hybrid simulation in which compensation for actuator dynamics is implemented using a model-based feedforward compensator. The method is used to evaluate the response of a semi-active control of a structure employing an MR damper. Experimental results show good agreement with the predicted responses, demonstrating the effectiveness of the method for structural control performance assessment.

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Authors and Affiliations

  1. Skidmore, Owings & Merrill LLP, Chicago, IL, USA

    Juan E. Carrion

  2. Civil and Environmental Engineering Department, University of Illinois, Chicago, IL, 61820, USA

    B. F. Spencer Jr & Brian M. Phillips

Authors
  1. Juan E. Carrion
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  2. B. F. Spencer Jr
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  3. Brian M. Phillips
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Corresponding author

Correspondence to B. F. Spencer Jr.

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Supported by: National Science Foundation Graduate Research Fellowship

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Carrion, J.E., Spencer, B.F. & Phillips, B.M. Real-time hybrid simulation for structural control performance assessment. Earthq. Eng. Eng. Vib. 8, 481–492 (2009). https://doi.org/10.1007/s11803-009-9122-4

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  • DOI: https://doi.org/10.1007/s11803-009-9122-4

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