Design of a Motion Energy Harvester based on Compliant Mechanisms: a Bi-stable Frequency Up-converter Generator

  • T. W. A. BladEmail author
  • D. Farhadi Machekposhti
  • J. L. Herder
  • N. Tolou
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)


This work presents a novel design, model and prototype of a motion energy harvester based on bi-stability and frequency up-conversion. The Parametric Frequency up-converter Generator (PFupCG). The PFupCG was designed to harvest energy under conditions where the amplitude of the driving motion is larger than the internal displacement limit. Instead of an impact member, the PFupCG uses a compliant suspension mechanism that combines a bi-stable characteristic with a strong stiffening behavior as a result of geometric effects. This resulted in a prototype of the PFupCG with an internal-to-applied motion amplitude ratio of 0.2. A case study was carried out where the PFupCG was analyzed by simulation and experiment for vibration conditions representative of human walking motion (2Hz, 25 mm).


Motion energy harvesting Frequency up-conversion Bi-stability Compliant mechanisms Nonlinear dynamics 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • T. W. A. Blad
    • 1
    Email author
  • D. Farhadi Machekposhti
    • 1
  • J. L. Herder
    • 1
  • N. Tolou
    • 1
  1. 1.Department of Precision and Microsystems EngineeringDelft University of TechnologyDelftThe Netherlands

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