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A simple strategy for dynamic substructuring: I. Concept and development
Author(s) -
Stefanaki Aikaterini,
Sivaselvan M. V.
Publication year - 2018
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.3039
Subject(s) - controller (irrigation) , key (lock) , simple (philosophy) , computer science , control engineering , focus (optics) , feature (linguistics) , control (management) , control theory (sociology) , engineering , artificial intelligence , philosophy , physics , computer security , optics , epistemology , agronomy , biology , linguistics
Summary Dynamic substructuring refers to physical testing with computational models in the loop. This paper presents a new strategy for such testing. The key feature of this strategy is that it decouples the substructuring controller from the physical subsystem. Unlike conventional approaches, it does not explicitly include a tracking controller. Consequently, the design and implementation of the substructuring controls are greatly simplified. This paper motivates the strategy and discusses the main concept along with details of the substructuring control design. The focus is on configurations that use shake tables and active mass drivers. An extensive experimental assessment of the new strategy is presented in a companion paper, where the influence of various factors such as virtual subsystem dynamics, control gains, and nonlinearities is investigated, and it is shown that robustly stable and accurate substructuring is achieved.