Experimental vilification on power generation of an electromagnetic transducer with a variable tuned inerter

Abstract

This article aims to verify the power generation efficiency of a inerter-controlled tuned inertial mass electromagnetic transducer (TIMET) experimentally. The TIMET consists of a ball screw mechanism, rotational mass, turning spring, and permanent magnet synchronous motor (PMSM) and its energy absorption capability can be increased by taking advantage of the resonance effect of the rotational mass due to the tuning spring. However, the TIMET cannot show maximum performance for vibrations that change its dominant frequency because of the mechanism. To address this issue, this paper proposes the a variable tuned inerter mechanism which can adapt to the frequency change of external disturbances for the TIMET . By calculating the dominant frequency of vibration by the fast Fourier transform using the measured data, the mechanism can be adjusted to the external frequency change automatically, leading to improved power generation performance.