A Wearable Haptic Display to Present the Gravity Sensation - Preliminary Observations and Device Design.
ABSTRACT We propose a wearable ungrounded haptic display that presents a realistic gravity sensation of a virtual object. We focused on the shearing stress on the fingerpads due to the weight of the object, and found that the deformation of the fingerpads can generate a reliable gravity sensation even when proprioceptive sensation on the wrist or arm is absent. This implies that an ungrounded gravity display can be realized by reproducing fingerpad deformation. Based on our observations, we conducted evaluation tests for the device design. We first implemented the prototype device, which has a simple structure comprising dual motors, and then evaluated the recognition ability of the gravity sensation presented on the operator's finger by this method.
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Conference Paper: Shape and weight rendering for haptic Augmented Reality[Show abstract] [Hide abstract]
ABSTRACT: Haptic interfaces in Augmented Reality scenarios are an efficient way to enhance the interaction with a virtual world. We introduce a new system that involves both hands in virtual object experience. We render contemporary shape and weight of a virtual object, merged in a real world environment, using a commercial haptic interface and a new kind of finger-worn device. We test the system with an experimental setup where a virtual cube is placed over a real marker. The system developed can be used in several applications of augmented reality where rendering only the object shape is not enough to perceive the virtual world. It can also lead towards the introduction of more wearable devices in the haptics augmented reality context.RO-MAN, 2010 IEEE; 10/2010
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ABSTRACT: This paper presents an experiment of two finger grasping. The task considered is the peg-in-hole and the simulated force feedback is cutaneous or kinesthetic. The kinesthetic feedback is provided by a commercial haptic device while the cutaneous one is provided by a new haptic display proposed in this work, which allows to render at the fingertip a wide range of contact forces. The device consists of a mobile surface, which interacts with the fingertip, actuated by three wires directly connected to the motors placed on the grounded structure of the display. This work summarizes the design of the proposed display and presents the main relationships which describe its kinematics and dynamics. Results showed that cutaneous feedback exhibits improved performances when compared to visual feedback only.Haptics: Perception, Devices, Mobility, and Communication. Eurohaptics 2012; 01/2012
Conference Paper: Shaking a box to estimate the property of content[Show abstract] [Hide abstract]
ABSTRACT: The fact that we can guess the properties of the contents in a box or a bottle by shaking it is interesting. If this experience can be realized virtually, it would be possible to use it as a means to transmit information from a portable information appliance to a user via haptic interaction. This paper describes an approach for implementing such a device; the development of a haptic device and control system as well as the modeling and simulation of a virtual box and its contents are presented in this paper. The prototype system was evaluated, and different model parameters were experimentally tested.Proceedings of the 2012 international conference on Haptics: perception, devices, mobility, and communication - Volume Part I; 06/2012