Deformable Model-Based Methods for Shape Control of a Haptic Jamming Surface.
Identifieur interne : 000246 ( Main/Exploration ); précédent : 000245; suivant : 000247Deformable Model-Based Methods for Shape Control of a Haptic Jamming Surface.
Auteurs : Andrew Stanley ; Allison OkamuraSource :
- IEEE transactions on visualization and computer graphics [ 1941-0506 ] ; 2016.
Abstract
Haptic Jamming, the approach of simultaneously controlling mechanical properties and surface deformation of a tactile display via particle jamming and pneumatics, shows promise as a tangible, shape-changing human-computer interface. Previous research introduced device design and described the force-displacement interactions for individual jamming cells. The work in this article analyzes the shape output capabilities of a multi-cell array. A spring-mass deformable body simulation combines models of the three actuation inputs of a Haptic Jamming surface: node pinning, chamber pressurization, and cell jamming. Surface measurements of a 12-cell prototype from a depth camera fit the mass and stiffness parameters to the device during pressurization tests and validate the accuracy of the model for various actuation sequences. The simulator is used to develop an algorithm that generates a sequence of actuation inputs for a Haptic Jamming array of any size in order to match a desired surface output shape. Data extracted from topographical maps and three-dimensional solid object models are used to evaluate the shape-matching algorithm and assess the utility of increasing array size and resolution. Results show that a discrete Laplace operator applied to the input is a suitable predictor of the correlation coefficient between the desired shape and the device output.
DOI: 10.1109/TVCG.2016.2525788
PubMed: 26863666
Affiliations:
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Le document en format XML
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