Method for optimization of a nonlinear static balance mechanism, with application to ophthalmic surgical forceps

Katherine M. Powell, Mary I. Frecker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

A new method for optimizing the dimensions of a nonlinear static balance mechanism has been created. A rigid link slider-crank mechanism with a nonlinear spring is designed to balance a compliant mechanism. This is accomplished by determining the potential energy of the compliant mechanism using finite element analysis and then optimizing the dimensions of the static balance mechanism to balance the potential energy stored in the compliant forceps. The optimization is performed using a sequential quadratic programming algorithm in Matlab's optimization toolbox. It is seen that using higher order nonlinear springs results in a system that is better statically balanced. The mechanism that is statically balanced is a compliant forceps that has previously been designed for use in ophthalmic surgery. The compliant forceps stores energy when it creates motion, which then creates neutral positions of the mechanism with minimum potential energy. This situation is often unwanted in surgical situations. This paper uses the compliant forceps as an example of how to optimize the dimensions of a nonlinear static balance mechanism static balance mechanism, nonlinear spring, compliant mechanism, multifunctional instrument, ophthalmic surgery.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conferences - DETC2005
Subtitle of host publication29th Mechanisms and Robotics Conference
PublisherAmerican Society of Mechanical Engineers
Pages441-447
Number of pages7
ISBN (Print)0791847446, 9780791847442
DOIs
StatePublished - 2005
EventDETC2005: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - Long Beach, CA, United States
Duration: Sep 24 2005Sep 28 2005

Publication series

NameProceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - DETC2005
Volume7 A

Other

OtherDETC2005: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
CountryUnited States
CityLong Beach, CA
Period9/24/059/28/05

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Powell, K. M., & Frecker, M. I. (2005). Method for optimization of a nonlinear static balance mechanism, with application to ophthalmic surgical forceps. In Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conferences - DETC2005: 29th Mechanisms and Robotics Conference (pp. 441-447). (Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - DETC2005; Vol. 7 A). American Society of Mechanical Engineers. https://doi.org/10.1115/detc2005-84759