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Fast and "soft-arm" tactics [robot arm design]

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2 Author(s)
Bicchi, A. ; Autom. & Robotics Group, Pisa Univ., Italy ; Tonietti, G.

This article considered the problem of designing joint-actuation mechanisms that can allow fast and accurate operation of a robot arm, while guaranteeing a suitably limited level of injury risk. Different approaches to the problem were presented, and a method of performance evaluation was proposed based on minimum-time optimal control with safety constraints. The variable stiffness transmission (VST) scheme was found to be one of a few different possible schemes that allows the most flexibility and potential performance. Some aspects related to the implementation of the mechanics and control of VST actuation were also reported.

Published in:

Robotics & Automation Magazine, IEEE  (Volume:11 ,  Issue: 2 )