132 / 2021-03-31 11:47:41

Self-powered active control on a single degree of freedom system under seismic excitation

Self-powered,Active control,Isolation,Dual-function,energy harvesting;

Applications of active control that normally correspond to optimal control performance are generally hindered by their large power consumptions. Nevertheless, in light of the structural vibration can be inherently regarded as kinetic power source, a novel self-powered active electromagnetic controller capable of simultaneous energy harvesting and actuation processes is proposed and subsequently presented in this paper. Besides the introduction of its topology, working mechanism, and power analyses, the proposed device has been deployed to the vibration isolation of a single degree of freedom (SDOF) system subjected to ground motion imposing the classic active control algorithm – the skyhook control, while remaining self-powered. Both analytical and experimental validations are performed to cross-verify its feasibility.