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A vision-based measurement algorithm for micro/nano manipulation

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4 Author(s)
Leon Clark ; Robotics and Mechatronics Research Laboratory (RMRL), Department of Mechanical and Aerospace Engineering, Monash University, Clayton VIC 3800, Australia ; Bijan Shirinzadeh ; Umesh Bhagat ; Julian Smith

This paper presents a vision-based measurement methodology which utilises a micrometre calibration slide and confocal microscope. The technique is suitable for measurement of both angular and linear displacements. The algorithm presented in this paper overcomes the shortcomings of limited CCD pixel count and image size, out of focus areas at the boundaries of the image, and vertical motion of the slide out of the focal plane. Many parameters can be changed within the setup, allowing the resolution and range of measurement to be modified for a given application. Experimental verification has been performed in an angular measurement configuration, demonstrating noise-limited linear and angular resolutions of 0.04 μm and 0.29 μrad, respectively.

Published in:

2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics

Date of Conference:

9-12 July 2013