Real-time hybrid simulation for structural control performance assessment

Juan E. Carrion, B. F. Spencer, Brian M. Phillips

Research output: Contribution to journalArticle

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.

Original languageEnglish (US)
Pages (from-to)481-492
Number of pages12
JournalEarthquake Engineering and Engineering Vibration
Volume8
Issue number4
DOIs
StatePublished - Dec 2009

Keywords

  • Actuator dynamics
  • MR damper
  • Real-time hybrid simulation
  • Semi-active control

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering

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