Metamodel-assisted design optimization of piezoelectric flex transducer for maximal bio-kinetic energy conversion

Liheng Luo, Dianzi Liu, Meiling Zhu, Jianqiao Ye

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)
17 Downloads (Pure)

Abstract

Energy Harvesting Devices (EHD) have been widely used to generate electrical power from the bio-kinetic energy of human body movement. A novel Piezoelectric Flex Transducer (PFT) based on the Cymbal device has been proposed by Daniels et al. (2013) for the purpose of energy harvesting. To further improve the efficiency of the device, optimal design of the PFT for maximum output power subject to stress and displacement constraints is carried out in this paper. Sequential Quadratic Programming (SQP) on metamodels generated with Genetic Programming from a 140-point optimal Latin hypercube design of experiments is used in the optimization. Finally, the optimal design is validated by finite element simulations. The simulations show that the magnitude of the electrical power generated from this optimal PFT harvesting device can be up to 6.5 mw when a safety design factor of 2.0 is applied.
Original languageEnglish
Pages (from-to)2528-2538
Number of pages11
JournalJournal of Intelligent Material Systems and Structures
Volume28
Issue number18
Early online date1 Feb 2017
DOIs
Publication statusPublished - 1 Nov 2017

Keywords

  • Energy harvesting
  • piezoelectric
  • parametric optimization
  • design of experiments
  • metamodel

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