IIR Compensation in Real-Time Hybrid Simulation using Shake Tables with Complex Control-Structure-Interaction |
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| Authors: | Matthew Stehman Narutoshi Nakata |
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| Institution: | 1. Department of Civil Engineering, Johns Hopkins University, Baltimore, Maryland, USAmstehma1@jhu.edu;3. Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York, USA |
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| Abstract: | This article considers the use of actuator compensation in real-time hybrid simulation (RTHS) containing experimental substructures with complex control-structure-interaction (CSI). The existence of CSI in shake table testing is derived using theoretical relations. An infinite-impulse-response (IIR) compensator is developed to compensate for the shake table time delay as well as the effects of CSI. The efficacy of the IIR compensator is verified through numerical and experimental investigations of substructure shake table testing completed at Johns Hopkins University. IIR compensation is not limited to substructure shake table testing, and the concept is applicable to any RTHS that suffers from complex CSI. |
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| Keywords: | Real-Time Hybrid Simulation Control-Structure-Interaction Delay Compensation Shake Table Testing Earthquake Engineering |
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