TY - GEN
T1 - Method for optimization of a nonlinear static balance mechanism, with application to ophthalmic surgical forceps
AU - Powell, Katherine M.
AU - Frecker, Mary I.
PY - 2005
Y1 - 2005
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=33244495321&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33244495321&partnerID=8YFLogxK
U2 - 10.1115/detc2005-84759
DO - 10.1115/detc2005-84759
M3 - Conference contribution
AN - SCOPUS:33244495321
SN - 0791847446
SN - 9780791847442
T3 - Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference - DETC2005
SP - 441
EP - 447
BT - Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conferences - DETC2005
PB - American Society of Mechanical Engineers
T2 - DETC2005: ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
Y2 - 24 September 2005 through 28 September 2005
ER -