An electromagnetic vibration absorber with harvesting and tuning capabilities.

Research output: Contribution to journalArticle (Academic Journal)peer-review

51 Citations (Scopus)


This paper describes the development of an electromagnetic vibration absorber (EVA) with energy recovery andfrequency tuning control capabilities. The essential component of the EVA is an electromagnetic transducer, inter-facing between electrical and mechanical domains, connected to an external electrical circuit. So far, the use ofelectromagnetic devices in vibration-control applications has been driven by energy-harvesting applications. Inthese works, the electromagnetic transducer acts as a damper in the mechanical domain by connecting a resistanceacross the terminals of the device. By emulating the resistive components, some of the power that would have beendissipated in the resistor can be converted into usable power. The use of electromagnetic devices also opens thedoor (i) to the synthesis of more complex networks in the electrical domain, most of them impractical or too com-plicated to be synthesized mechanically and (ii) to the development of frequency tuning networks. We consider thepossibility of using an EVA along with a resistance emulator to give a self-powered adaptive EVA. We explore theswitching in of different elements across the terminals of the electromagnetic transducer in order to be able toderive new low-powered control schemes for better vibration absorption. With the underlying goal to develop highperformance, energy-efficient vibration-control devices, a small scale EVA device was tested, coupled with avirtual host structure. The results presented here demonstrate the potential for self-tuning of such a device.Copyright
Original languageEnglish
JournalStructural Control and Health Monitoring
Publication statusPublished - 2015


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