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A 2-DOF manipulator for micro-assembly in a minifactory

Authors: Jun Zhang; Ralph L. Hollis;

A 2-DOF manipulator for micro-assembly in a minifactory

Abstract

This paper presents a new 2-DOF “SMACbot” manipulator which can cooperate with a 2-DOF planar “courier” robot to perform precise assembly tasks within a minifactory. The SMACbot manipulator augments the function of an off-the-shelf rotary/linear actuator from SMAC Corporation. The mechanical and electrical systems of SMACbot are described, and the sensing and control of the manipulator are introduced. Novel features include a vacuum system for compensating the vertical axis weight of the SMACbot and an air bearing system for minimizing friction. The SMACbot utilizes a remote user interface based on web sockets. Basic motion control performance of the SMACbot was measured with a laser interferometer to provide ground truth. The vertical (z-direction) 5 mm fixed distance motion repeatability test results showed the average error is 8.4 µm. The 10 µm small distance motion error is approximately 0.3 µm. The 0.5 ° fixed angle rotation motion repeatability error is approximately 0.12 ° which is mainly caused by the backlash of the reduction gearing of the SMAC rotational (θ) axis.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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