On the assessment of passive devices for structural control via real-time dynamic substructuring

Londoño, Julián M.; Serino, Giorgio; Wagg, DJ; Neild, Simon A; Crewe, Adam J

doi:10.1002/stc.464

Cited by 10 publications

(4 citation statements)

References 27 publications

(42 reference statements)

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“…Section 4 includes the experimental testing of the proposed scheme, obtained by performing real‐time dynamic substructuring (RTDS) testing . RTDS allows testing components of a structure offering advantages in terms of cost and versatility while offering reliable results if a good control of the transfer system is developed . The results obtained from the RTDS tests suggest that enough power is generated so the proposed TMD/H is self‐tuning and self‐powered.…”

Section: Introductionmentioning

confidence: 99%

An optimised tuned mass damper/harvester device

Gonzalez-Buelga

Clare

Cammarano

et al. 2014

Struct. Control Health Monit.

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SUMMARY Much work has been conducted on vibration absorbers, such as tuned mass dampers (TMD), where significant energy is extracted from a structure. Traditionally, this energy is dissipated through the devices as heat. In this paper, the concept of recovering some of this energy electrically and reuse it for structural control or health monitoring is investigated. The energy‐dissipating damper of a TMD is replaced with an electromagnetic device in order to transform mechanical vibration into electrical energy. That gives the possibility of controlled damping force whilst generating useful electrical energy. Both analytical and experimental results from an adaptive and a semi‐active tuned mass damper/harvester are presented. The obtained results suggest that sufficient energy might be harvested for the device to tune itself to optimise vibration suppression. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

An optimised tuned mass damper/harvester device

Gonzalez-Buelga

Clare

Cammarano

et al. 2014

Struct. Control Health Monit.

Self Cite

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“…13 in [17] and fig. 20 in [26]: the control system was unchanged, whereas the substructured responses became unstable when y i was switched to be fully fed back from the load cell.…”

Section: Further Discussion On Adaptive Forward Prediction Control Anmentioning

confidence: 99%

Modelling and control issues of dynamically substructured systems: adaptive forward prediction taken as an example

Hsiao

Chen

2014

Proc. R. Soc. A.

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Testing techniques of dynamically substructured systems dissects an entire engineering system into parts. Components can be tested via numerical simulation or physical experiments and run synchronously. Additional actuator systems, which interface numerical and physical parts, are required within the physical substructure. A high-quality controller, which is designed to cancel unwanted dynamics introduced by the actuators, is important in order to synchronize the numerical and physical outputs and ensure successful tests. An adaptive forward prediction (AFP) algorithm based on delay compensation concepts has been proposed to deal with substructuring control issues. Although the settling performance and numerical conditions of the AFP controller are improved using new directcompensation and singular value decomposition methods, the experimental results show that a linear dynamics-based controller still outperforms the AFP controller. Based on experimental observations, the least-squares fitting technique, effectiveness of the AFP compensation and differences between delay and ordinary differential equations are discussed herein, in order to reflect the fundamental issues of actuator modelling in relevant literature and, more specifically, to show that the actuator and numerical substructure are heterogeneous dynamic components and should not be collectively modelled as a homogeneous delay differential equation.

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“…Real‐time dynamic substructuring is a versatile technique that allows both full size and real‐time testing of key components within the context of the whole structure . More details regarding the technical development of substructured tests can be found in . Under the substructuring setup, the EVA was physically built, while the host structure was simulated numerically.…”

Section: Host Structure Eva System Experimental Testingmentioning

confidence: 99%

An electromagnetic vibration absorber with harvesting and tuning capabilities

Gonzalez-Buelga

Clare

Neild

et al. 2015

Struct. Control Health Monit.

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Summary This paper describes the development of an electromagnetic vibration absorber (EVA) with energy recovery and frequency tuning control capabilities. The essential component of the EVA is an electromagnetic transducer, interfacing between electrical and mechanical domains, connected to an external electrical circuit. So far, the use of electromagnetic devices in vibration‐control applications has been driven by energy‐harvesting applications. In these works, the electromagnetic transducer acts as a damper in the mechanical domain by connecting a resistance across the terminals of the device. By emulating the resistive components, some of the power that would have been dissipated in the resistor can be converted into usable power. The use of electromagnetic devices also opens the door (i) to the synthesis of more complex networks in the electrical domain, most of them impractical or too complicated to be synthesized mechanically and (ii) to the development of frequency tuning networks. We consider the possibility of using an EVA along with a resistance emulator to give a self‐powered adaptive EVA. We explore the switching in of different elements across the terminals of the electromagnetic transducer in order to be able to derive new low‐powered control schemes for better vibration absorption. With the underlying goal to develop high performance, energy‐efficient vibration‐control devices, a small scale EVA device was tested, coupled with a virtual host structure. The results presented here demonstrate the potential for self‐tuning of such a device. Copyright © 2015 John Wiley & Sons, Ltd.

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On the assessment of passive devices for structural control via real-time dynamic substructuring

Cited by 10 publications

References 27 publications

An optimised tuned mass damper/harvester device

An optimised tuned mass damper/harvester device

Modelling and control issues of dynamically substructured systems: adaptive forward prediction taken as an example

An electromagnetic vibration absorber with harvesting and tuning capabilities

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