Position Tracking for Non-linear Teleoperators with Variable Time Delay

Emmanuel Nuño

doi:10.1177/0278364908099461

Position Tracking for Non-linear Teleoperators with Variable Time Delay

2009-06-26

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DOI：10.1177/0278364908099461

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In this paper the problem of position tracking in the presence of variable time delay is studied. It is proved that simple P-like and PD-like controllers can stabilize the teleoperator under variable time delays and, moreover, they provide position tracking. Then, a controller based on the scattering transformation that also provides position tracking is proposed. In this paper we present the conditions under which the velocities and position error of the non-linear teleoperator, for the three controllers, are bounded, and if the human does not move the local manipulator and the remote manipulator does not interact with the environment, then it is proved that velocities and position error converge to zero. Simulations and real experiments, using the Internet from Urbana-Champaign (USA) to Barcelona (Spain), validate the proposed schemes.

Keyword:

bilateral teleoperation

time-delays

nonlinear control

internet

Position Tracking for Non-linear Teleoperators with Variable Time Delay

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