Title :
Surface mapping feedback for robot-assisted rapid prototyping
Author :
Barnett, Eric ; Angeles, Jorge ; Pasini, Damiano ; Sijpkes, Pieter
Author_Institution :
Dept. of Mech. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
A fundamental problem with many solid freeform fabrication systems is the production of large dimensional errors, due to the freeform construction process. The subject of this paper is surface mapping feedback (SMF), a closed-loop technique for minimizing the dimensional errors produced by rapid prototyping systems. The main steps of the technique are presented, namely part measurement, control implementation, and deposition adjustment. A test platform, the Cobra 600 rapid freeze prototyping system, is used to validate SMF. A helical gear part is constructed first with open-loop control and then with SMF control; system performance and part quality are compared for the two cases.
Keywords :
closed loop systems; continuous production; feedback; industrial robots; open loop systems; rapid prototyping (industrial); Cobra 600 rapid freeze prototyping system; closed-loop technique; continuous-flow system; control implementation; deposition adjustment; dimensional error minimization; drop-on-demand system; freeform construction process; helical gear part; open-loop control; part measurement; part quality; robot-assisted rapid prototyping; solid freeform fabrication system; surface mapping feedback; system performance; Accuracy; Displacement measurement; Gears; Materials; Measurement by laser beam; Process control; Surface treatment;
Conference_Titel :
Robotics and Automation (ICRA), 2011 IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-61284-386-5
DOI :
10.1109/ICRA.2011.5979689
