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Compensating device inertia for 6-DOF haptic rendering

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4 Author(s)
Jilin Zhou ; Distributed and Collaborative Virtual Environments Research Laboratory (DISCOVER), School of Information Technology and Engineering (SITE), University of Ottawa, Ottawa, Canada ; Francois Malric ; Emil M. Petriu ; Nicolas D. Georganas

In this paper, the importance of the user's primary holding pivot point on the end effector of a haptic interface is discussed. Both theoretical analysis and experimental results demonstrate that this holding pivot point is critical for the correct perception of the haptic properties assigned to the virtual objects. We also study the physical inertia effects of the end effector on the non-uniform stiffness perception of simulated virtual objects. To the best of our knowledge, no such combined consideration of holding pivot point and device structure related inertia has so far been made for works in 6-DOF haptic rendering. We have instrumented the end effector of a haptic interface with a membrane potentiometer to measure the user's primary holding pivot point in real-time. Accordingly, a preliminary adaptive feedback method is developed to render the appropriate forces/torques to compensate for the effects of the end effector's inertia on the haptic stiffness perception.

Published in:

Systems, Man and Cybernetics, 2009. SMC 2009. IEEE International Conference on

Date of Conference:

11-14 Oct. 2009