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Sensors 2013, 13(8), 10430-10448; doi:10.3390/s130810430

Application of a Force Sensor to Improve the Reliability of Measurement with Articulated Arm Coordinate Measuring Machines

2,* , 1
1 Department of Mechanical, Informatics and Aeroespatial Engineering, University of León, Campus de Vegazana, León 24071, Spain 2 Department of Manufacturing Engineering, University of Oviedo, Campus de Gijón, Asturias 33203, Spain
* Author to whom correspondence should be addressed.
Received: 8 June 2013 / Revised: 22 July 2013 / Accepted: 8 August 2013 / Published: 13 August 2013
(This article belongs to the Special Issue Tactile Sensors and Sensing Systems)


A study of the operator contact force influence on the performance of Articulated Arm Coordinate Measuring Machines (AACMMs) is presented in this paper. After developing a sensor capable of measuring the contact force applied by an operator, a ring gauge has been used to analyse the relationship between the contact force and diameter and form errors measured with the AACMM. As a result, contact force has been proved as one of the main factors influencing the AACMM performance. A probe deflection model based on the Finite Element Method (FEM) has been also proposed in order to obtain the AACMM probe deflection caused by contact force. This allows measurement correction by comparing them with reference values, specifically, a ring gauge. Experimental test results show a significant measurement improvement that minimizes diameter error. Finally, an uncertainty evaluation for the contact force sensor and AACMM measurements with and without probe deflection model has been carried out in order to validate the ability of the sensor and the methodology followed.
Keywords: AACMM; contact force sensor; probe deflection AACMM; contact force sensor; probe deflection
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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González-Madruga, D.; Cuesta, E.; Barreiro, J.; Fernandez-Abia, A.I. Application of a Force Sensor to Improve the Reliability of Measurement with Articulated Arm Coordinate Measuring Machines. Sensors 2013, 13, 10430-10448.

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