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Sensors 2006, 6(6), 546-556; doi:10.3390/s6060546
Article

Differential Laser Doppler based Non-Contact Sensor for Dimensional Inspection with Error Propagation Evaluation

*  and
The University of Manchester, School of Mechanical, Aerospace and Civil Engineering. PO Box 88, Manchester, UK
* Author to whom correspondence should be addressed.
Received: 25 April 2006 / Accepted: 13 June 2006 / Published: 15 June 2006
(This article belongs to the Special Issue Intelligent Sensors)
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Abstract

To achieve dynamic error compensation in CNC machine tools, a non-contactlaser probe capable of dimensional measurement of a workpiece while it is being machinedhas been developed and presented in this paper. The measurements are automatically fedback to the machine controller for intelligent error compensations. Based on a well resolvedlaser Doppler technique and real time data acquisition, the probe delivers a very promisingdimensional accuracy at few microns over a range of 100 mm. The developed opticalmeasuring apparatus employs a differential laser Doppler arrangement allowing acquisitionof information from the workpiece surface. In addition, the measurements are traceable tostandards of frequency allowing higher precision.
Keywords: In-process inspection; Differential Laser Doppler; Error propagation In-process inspection; Differential Laser Doppler; Error propagation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Mekid, S.; Vacharanukul, K. Differential Laser Doppler based Non-Contact Sensor for Dimensional Inspection with Error Propagation Evaluation. Sensors 2006, 6, 546-556.

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