Title: Design and Testing of a Galfenol Tactile Sensor Array
The smart material Galfenol, Fe(100-x)Ga(x), where 15<x<28, offers a unique combination of mechanical and magnetostrictive properties that are expected to lead to its use in new sensor and actuator concepts. This thesis seeks to determine if Galfenol can be used to develop a 2-dimensional array of force sensors as part of a 3-D magnetic circuit that, if properly scaled, could mimic …
Author: Hale, Kathleen
Source: University of Maryland
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Contents
1 INTRODUCTION
1.1 Current and Future Use of Tactile Sensors
1.2 Background on Magnetics
1.3 Background on Magnetostriction and Galfenol
1.4 Proposed Sensor Array
1.5 Summary
2 PRELIMINARY MODELING AND DESIGN
2.1 Overview
2.2 Preliminary Circuit Optimization
2.3 Prototype I Circuit Configuration
3 ANALYSIS OF PROTOTYPE I CIRCUIT DESIGN
3.1 No Load Circuit Analysis
3.2 Analysis of Circuit Under Load
4 PERFORMANCE OF PROTOTYPE I DESIGN
4.1 Set-Up
4.2 Initial Experiments
4.2.1 Static Loading
4.2.2 Static Loading Analysis
4.2.3 Dynamic Loading
4.3 Modeling of Rod Top Separation
5 PERFORMANCE AND ANALYSIS OF PROTOTYPE II
5.1 Set-up
5.2 Acquisition Results and Discussion
5.3 Rod Flux Density Bias Level Investigation
6 CONCLUSIONS AND SUMMARY
7 SUGGESTED FURTHER STUDY
APPENDIX