Mechanical and energy-harvesting model for electromagnetic inertial mass dampers

Hongping Zhu, Yamin Li, Wenai Shen, Songye Zhu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

86 Citations (Scopus)


Recently, a novel inerter-based damper termed electromagnetic inertial mass damper (EIMD) that is capable of generating a large inertance and providing a controllable electromagnetic (EM) damping has been used as an energy dissipation device for seismic response control. Structural vibration energy induced by external loading is converted into electricity via the EIMD, for being dissipated and harvested. In this paper, the EIMD is proposed for simultaneous vibration mitigation and energy harvesting for the first time. A new mechanical model is proposed to predict the nonlinear behavior of the EIMD, and a linearized model is subsequently deduced based on the equal energy dissipation rule. In addition, an energy-harvesting model is presented to predict the output power and energy harvesting efficiency of the EIMD. To maximize the efficiency of the EIMD, this paper derives the corresponding optimal load resistance that can serve as the design criteria for an energy harvesting circuit (EHC). The proposed models are validated by the dynamic test of a prototype EIMD using harmonic excitation.

Original languageEnglish
Pages (from-to)203-220
Number of pages18
JournalMechanical Systems and Signal Processing
Publication statusPublished - 1 Apr 2019


  • Dynamic test
  • Electromagnetic damping
  • Energy harvesting
  • Inerter
  • Theoretical model
  • Vibration control

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Signal Processing
  • Civil and Structural Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Computer Science Applications


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