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Adaptive Ink Droplet Position Compensation in Three Dimensional Printing

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Abstract:

The parabolic droplet trajectory in inkjet printing causes an error between actual and expected position, deteriorating printing quality in high speed printing and reducing strength of printed parts in three dimensional printing. To improve the quality of printing prototype and increase printing speed, an accurate firing time estimation method is proposed to compensate the droplet position error. Firstly, an extended state observer is designed to estimate the carriage's velocity on line. Secondly, the exact firing time for droplet position compensation is calculated based on the estimated carriage velocity and specific droplet jetting speed. Finally, experiments are finished to show the effectiveness and feasibility of this approach.

Keywords: DROPLET POSITION COMPENSATION; EXTENDED STATE OBSERVER; FIRING CONTROL; INK-JET PRINTING

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/asl.2012.2214

Publication date: March 1, 2012

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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