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Hand acceleration impulse bandwidth during target acquisition: implications for teleoperator bandwidth requirements

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1 Author(s)
Draper, J.V. ; Robotics & Process Syst. Div., Oak Ridge Nat. Lab., TN, USA

The purpose of this experiment was to provide data about bandwidth requirements for teleoperators. During teleoperation, user inputs are changes in forces applied to the master controller arising from changes in hand acceleration during execution of goal-directed trajectories, so human hand acceleration bandwidth sets an upper bound on teleoperator feedforward bandwidth requirements. Participants completed a set of computerized target acquisition tasks using a mouse, and the computer recorded the cursor trajectory. Movement time, positioning error, the number of acceleration-deceleration impulses, impulse bandwidth, impulse amplitude, and impulse period were calculated from the trajectory trace. The results obtained show that to completely capture hand trajectories, master controllers and slave arms must have acceleration bandwidth higher than 9.20 Hz. However, it may be that only the joints closest to the end-effector need to accommodate the highest bandwidths and “shoulder” joints may only need to accommodate 5.63 Hz acceleration bandwidth

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Systems, Man and Cybernetics, IEEE Transactions on  (Volume:24 ,  Issue: 6 )