Optimal placement of active material actuators using genetic algorithm

Terrence Johnson, Mary I. Frecker

Research output: Contribution to journalConference articlepeer-review

7 Scopus citations


Compliant mechanisms are single-piece flexible mechanisms that use elastic deformation to achieve motion. Compliant mechanisms are often used as coupling structures with piezoelectric actuators to provide stroke amplification. The objective of this work is to develop an optimization methodology to design compliant mechanisms with multiple optimally placed multiple actuator elements. A genetic algorithm approach is used to maximize the output displacement when working against an external spring of specified stiffness. Studies are conducted to determine the effect of volume constraints on active and passive material, external stiffness, applied voltage, and density of the ground structure.

Original languageEnglish (US)
Pages (from-to)221-231
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Dec 1 2004
EventSmart Structures and Materials 2004 - Modeling, Signal Processing, and Control - San Diego, CA, United States
Duration: Mar 15 2004Mar 18 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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