Title
Novel Mechanically Fully Decoupled Six-Axis Force-Moment Sensor.
Abstract
In this study, a novel six-axis force/moment (F/M) sensor was developed. The sensor has a novel ring structure comprising a cross-beam elastic body with sliding and rotating mechanisms to achieve complete decoupling. The unique sliding and rotating mechanisms can reduce cross-talk effects caused by minimized structural interconnection. The forces F-x, F-y, and F-z and moments M-x, M-y, and M-z can be measured for the six-axis F/M sensors according to the elastic deformation of strain gauges attached to the cross beam. Herein, we provide detailed descriptions of the mathematical models, model idealizations, model creation, and the mechanical decoupling principle. The paper also presents a theoretical analysis of the strain based on Timoshenko beam theory and the subsequent validation of the analysis results through a comparison of the results with those obtained from a numerical analysis conducted using finite element analysis simulations. The sensor was subjected to experimental testing to obtain the maximum cross-talk errors along the following six axes under different loadings (the errors are presented in parentheses): F-x under SMy (2.12%), F-y under SMx (1.88%), F-z under SMz (2.02%), M-x under SFz (1.15%), M-y under SFx (1.80%), and M-z under SFx (2.63%). The proposed sensor demonstrated a considerably improved cross-talk error performance compared with existing force sensors.
Year
DOI
Venue
2020
10.3390/s20020395
SENSORS
Keywords
Field
DocType
cross beam,cross-talk,mechanical decoupling,six-axis force,moment sensor,strain gauges
Timoshenko beam theory,Mathematical analysis,Decoupling (cosmology),Electronic engineering,Finite element method,Beam (structure),Deformation (engineering),Engineering,Strain gauge,Numerical analysis,Mathematical model
Journal
Volume
Issue
ISSN
20
2.0
1424-8220
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Chyi-Yeu Lin17114.95
Anton Royanto Ahmad201.35
Getnet Ayele Kebede300.68