Experimental characterization and performance improvement evaluation of an electromagnetic transducer utilizing a tuned inerter

Keita Sugiura, Yuta Watanabe, Takehiko Asai, Yoshikazu Araki, Kohju Ikago

    Research output: Contribution to journalArticlepeer-review

    22 Citations (Scopus)


    This research reports on the experimental verification of an enhanced energy conversion device utilizing a tuned inerter called a tuned inertial mass electromagnetic transducer (TIMET). The TIMET consists of a motor, a rotational mass, and a tuning spring. The motor and the rotational mass are connected to a ball screw and the tuning spring interfaced to the ball screw is connected to the vibrating structure. Thus, vibration energy of the structure is absorbed as electrical energy by the motor. Moreover, the amplified inertial mass can be realized by rotating relatively small physical masses. Therefore, by designing the tuning spring stiffness and the inertial mass appropriately, the motor can rotate more effectively due to the resonance effect, leading to more effective energy generation. The authors designed a prototype of the TIMET and conducted tests to validate the effectiveness of the tuned inerter for electromagnetic transducers. Through excitation tests, the property of the hysteresis loops produced by the TIMET is investigated. Then a reliable analytical model is developed employing a curve fitting technique to simulate the behavior of the TIMET and to assess the power generation accurately. In addition, numerical simulation studies on a structure subjected to a seismic loading employing the developed model are conducted to show the advantages of the TIMET over a traditional electromagnetic transducer in both vibration suppression capability and energy harvesting efficiency.

    Original languageEnglish
    Pages (from-to)56-72
    Number of pages17
    JournalJVC/Journal of Vibration and Control
    Issue number1-2
    Publication statusPublished - 2020 Jan 1


    • Energy harvesting
    • mechatronics
    • structural control
    • tuned inerter
    • tuned inertial mass electromagnetic transducer

    ASJC Scopus subject areas

    • Automotive Engineering
    • Materials Science(all)
    • Aerospace Engineering
    • Mechanics of Materials
    • Mechanical Engineering


    Dive into the research topics of 'Experimental characterization and performance improvement evaluation of an electromagnetic transducer utilizing a tuned inerter'. Together they form a unique fingerprint.

    Cite this