Abstract:
Dynamic substructuring is a hybrid testing strategy, which enables full-size, critical components of an entire engineering system to be physically tested, whilst the rema...Show MoreMetadata
Abstract:
Dynamic substructuring is a hybrid testing strategy, which enables full-size, critical components of an entire engineering system to be physically tested, whilst the remaining parts are simulated numerically. Successful tests require a robust controller to compensate for unwanted dynamics introduced by supplemental actuators within the physical substructure and to achieve synchronized responses of the numerical and physical parts in real-time. The aim of this feasibility study tries to identify the relative strength and weakness of three types of substructuring control strategy in literature, including (i) emulated-system-based (ii) numerical-substructure-based, and (iii) output-based controllers. The first two controllers are synthesized via conventional dynamics-based approaches, while the third using forward-prediction and curve-fitting concepts is classified as a geometry-based strategy. A practical substructuring example using a shaking-table system is presented for control comparisons. In the presence of uncertainties with the actuators or specimens, simulation studies show that these controllers exhibit distinct robustness in different cases.
Published in: 2013 9th Asian Control Conference (ASCC)
Date of Conference: 23-26 June 2013
Date Added to IEEE Xplore: 23 September 2013
ISBN Information: