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Erschienen in:
2012 | OriginalPaper | Buchkapitel
Rendering Stiffness with a Prototype Haptic Glove Actuated by an Integrated Piezoelectric Motor
verfasst von : Pontus Olsson, Stefan Johansson, Fredrik Nysjö, Ingrid Carlbom
Erschienen in: Haptics: Perception, Devices, Mobility, and Communication
Verlag: Springer Berlin Heidelberg
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Bi-directional haptic devices incorporate both sensors and actuators. While small and compact sensors are readily available, actuators in haptic interfaces require a significant volume to produce needed forces. With many actuated degrees of freedom, the mass and size of the actuators become a problem in devices such as haptic gloves. Piezo-technology offers the possibility of compact actuators which can be controlled with high accuracy. We describe a prototype admittance-type haptic device for the hand with a compact integrated piezoelectric motor. The current implementation provides one degree of freedom, but it could be extended with more motors for additional degrees of freedom. We demonstrate both the accuracy with which the device can reproduce force-displacement responses of non-linear elastic material stiffness and the device’s fast and stable response to an applied load.