| Summary: | 碩士 === 大葉大學 === 機械與自動化工程學系 === 100 === In this study, a strain-gauged type of two axis force sensor that can measure both the axial force and twisting moment was designed. The elastic sensing member is so designed that it can respond to axial force and twisting moment at the same time with specific corresponding deformations. Two full electrical bridges for sensing the axial force and the twisting moment respectively were formed by securely bonded strain gauges on locations of maximum strains to have maximum measurement sensitivity. Excitation is imposed on the Wheatstone bridges and the output voltages from the Wheatstone bridges can then respectively be used to evaluate the axial force and twisting moment by principle of linear proportion.
The solid model of the sensing member was built with Solid Works. This sensing member is designed to have a symmetrical beam portion to sense the axial force and a circular hollow bar to sense the twisting moment. In order to maximize the measurement sensitivity, the solid model is then subjected to a finite element analysis and design optimization. The final analysis of the results offers design sizes, strain magnitudes, etc., from which the various theoretical measurement characteristics of the two axis force sensor can be evaluated before a rear sensor is made.
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