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Multi-objective optimization of piezoelectric microactuator using genetic algorithms

Esteki, H ; Sharif University of Technology | 2009

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  1. Type of Document: Article
  2. DOI: 10.1115/IMECE2008-66909
  3. Publisher: 2009
  4. Abstract:
  5. In flex-tensional piezoactuators, due to the low displacement of piezostacks, a compliant mechanism is used to amplify displacement of piezostack. In this paper, optimization of a compliant mechanism with corner-filleted flexure hinges is carried out using real-coded genetic algorithms (GAs) to avoid trapping in local optimums. The objective functions are displacement amplification and stiffness of mechanism and design variables are cross-sectional size and material used. The constraints which are applied on mechanism are based on piezostack dimensions and manufacturing limits. Displacement amplification and stiffness are calculated using strain energy and Castigliano's displacement theorem. Copyright © 2008 by ASME
  6. Keywords:
  7. Castigliano ; Compliant mechanism ; Design variables ; Displacement amplification ; Flexure hinge ; Local optimum ; Objective functions ; Piezo-actuators ; Piezoelectric micro-actuators ; Piezostack ; Real-coded genetic algorithm ; Amplification ; Force measurement ; Hinges ; Mechanical engineering ; Mechanisms ; Microactuators ; Multiobjective optimization ; Stiffness ; Machine design
  8. Source: 2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008, Boston, MA, 31 October 2008 through 6 November 2008 ; Volume 13, Issue PART B , 2009 , Pages 723-730 ; 9780791848746 (ISBN)
  9. URL: https://asmedigitalcollection.asme.org/IMECE/proceedings-abstract/IMECE2008/48746/723/339054