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Structural and Multidisciplinary Optimization

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01-11-2013 | RESEARCH PAPER

Optimization of stresses in a local region for the maximization of sensitivity and minimization of cross—sensitivity of piezoresistive sensors

Authors: Qi Xia, Tielin Shi, Shiyuan Liu, Michael Yu Wang

Published in: Structural and Multidisciplinary Optimization | Issue 5/2013

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Abstract

Based on the analysis of a typical configuration of piezoresistive sensors, the intensity and uniformity of stresses produced by measurand force in the piezoresistive elements are identified as the parameters that affect the sensitivity of a sensor, and stresses produced by perturbation forces in the piezoresistive elements are identified as the parameters that affect the cross-sensitivity of a sensor. To maximize sensitivity and minimize cross-sensitivity, a shape and topology optimization problem is formulated to tailor the stresses in a local region where the piezoresistive elements are placed. In the optimization, the measurand force and perturbation forces are considered separately as two load cases. The optimization problem is solved via the level set based method. Numerical examples in two dimensions are investigated.

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Title: Optimization of stresses in a local region for the maximization of sensitivity and minimization of cross—sensitivity of piezoresistive sensors
Authors: Qi Xia
Tielin Shi
Shiyuan Liu
Michael Yu Wang
Publication date: 01-11-2013
Publisher: Springer Berlin Heidelberg
Published in: Structural and Multidisciplinary Optimization / Issue 5/2013
Print ISSN: 1615-147X
Electronic ISSN: 1615-1488
DOI: https://doi.org/10.1007/s00158-013-0997-3

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