Manipulator Performance Evaluation Using Fitts' Taping Task

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Metaphorically, a teleoperator with master controllers projects the user's arms and hands into a re- mote area, Therefore, human users interact with teleoperators at a more fundamental level than they do with most human-machine systems. Instead of inputting decisions about how the system should func- tion, teleoperator users input the movements they might make if they were truly in the remote area and the remote machine must recreate their trajectories and impedance. This intense human-machine inter- action requires displays and controls more carefully attuned to human motor capabilities than is neces- sary with most systems. It is important for teleoperated ... continued below

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10 Pages

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Draper, J.V.; Jared, B.C. & Noakes, M.W. April 25, 1999.

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Description

Metaphorically, a teleoperator with master controllers projects the user's arms and hands into a re- mote area, Therefore, human users interact with teleoperators at a more fundamental level than they do with most human-machine systems. Instead of inputting decisions about how the system should func- tion, teleoperator users input the movements they might make if they were truly in the remote area and the remote machine must recreate their trajectories and impedance. This intense human-machine inter- action requires displays and controls more carefully attuned to human motor capabilities than is neces- sary with most systems. It is important for teleoperated manipulators to be able to recreate human trajectories and impedance in real time. One method for assessing manipulator performance is to observe how well a system be- haves while a human user completes human dexterity tasks with it. Fitts' tapping task has been, used many times in the past for this purpose. This report describes such a performance assessment. The International Submarine Engineering (ISE) Autonomous/Teleoperated Operations Manipulator (ATOM) servomanipulator system was evalu- ated using a generic positioning accuracy task. The task is a simple one but has the merits of (1) pro- ducing a performance function estimate rather than a point estimate and (2) being widely used in the past for human and servomanipulator dexterity tests. Results of testing using this task may, therefore, allow comparison with other manipulators, and is generically representative of a broad class of tasks. Results of the testing indicate that the ATOM manipulator is capable of performing the task. Force reflection had a negative impact on task efficiency in these data. This was most likely caused by the high resistance to movement the master controller exhibited with the force reflection engaged. Measurements of exerted forces were not made, so it is not possible to say whether the force reflection helped partici- pants control force during testing.

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10 Pages

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  • ANS 8th Topical Meeting on Robotics and Remote Systems, Pittsburgh, PA, 04/25/1999

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  • Other: DE00006555
  • Report No.: ORNL/CP-102648
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 6555
  • Archival Resource Key: ark:/67531/metadc704404

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  • April 25, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • June 10, 2016, 4:58 p.m.

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Draper, J.V.; Jared, B.C. & Noakes, M.W. Manipulator Performance Evaluation Using Fitts' Taping Task, article, April 25, 1999; Pittsburgh, Pennsylvania. (digital.library.unt.edu/ark:/67531/metadc704404/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.