Design of a piezoelectric actuator and compliant mechanism combination for maximum energy efficiency

Mostafa Abdalla, Mary I. Frecker, Zafer Gürdal, Terrence Johnson, Douglas K. Lindner

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The combined optimization of a compliant mechanism and a piezoelectric stack actuator for maximum energy conversion efficiency is considered. The analysis assumes all components to be free from dissipation and that the piezoelectric stack actuator is driven by an ideal sinusoidal voltage source. The energy conversion efficiency is defined as the ratio of the output mechanical energy to the input electric energy. Using linear two-port models, an analytical expression for the maximum energy conversion efficiency is derived. It is shown that the optimization of the piezoelectric stack actuator can be decoupled from the topology optimization of the compliant mechanism. Computational verification of the analytical results is presented for two ground structures modeled using frame elements. The trade-off between displacement amplification and maximization of the energy conversion efficiency is examined.

Original languageEnglish (US)
Pages (from-to)1421-1430
Number of pages10
JournalSmart Materials and Structures
Volume14
Issue number6
DOIs
StatePublished - Dec 1 2005

Fingerprint

Compliant mechanisms
energy conversion efficiency
piezoelectric actuators
Piezoelectric actuators
Energy conversion
Conversion efficiency
Energy efficiency
Actuators
actuators
optimization
energy
Shape optimization
Amplification
Analytical models
topology
dissipation
output
Electric potential
electric potential

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

Cite this

Abdalla, Mostafa ; Frecker, Mary I. ; Gürdal, Zafer ; Johnson, Terrence ; Lindner, Douglas K. / Design of a piezoelectric actuator and compliant mechanism combination for maximum energy efficiency. In: Smart Materials and Structures. 2005 ; Vol. 14, No. 6. pp. 1421-1430.
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Design of a piezoelectric actuator and compliant mechanism combination for maximum energy efficiency. / Abdalla, Mostafa; Frecker, Mary I.; Gürdal, Zafer; Johnson, Terrence; Lindner, Douglas K.

In: Smart Materials and Structures, Vol. 14, No. 6, 01.12.2005, p. 1421-1430.

Research output: Contribution to journalArticle

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AU - Abdalla, Mostafa

AU - Frecker, Mary I.

AU - Gürdal, Zafer

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