Haptic technology

About: Haptic technology is a research topic. Over the lifetime, 18818 publications have been published within this topic receiving 306713 citations. The topic is also known as: haptics & haptic media.

Testing a prosthetic haptic feedback simulator with an interactive force matching task

Abstract: Prosthetic technology is a prime candidate for the integration of sensory feedback. Functional user testing of various haptic feedback modes is a necessary step to encourage commercial adoption. A haptic feedback simulator, using both a visual and vibrotactile representation of force, is cou

Contact Location Display for Haptic Perception of Curvature and Object Motion

Abstract: We present a new tactile display for use in dexterous telemanipulation and virtual reality. Our system renders the location of the contact centroid moving on the user's fingertip. Constructed in a thimble-sized package and mounted on a haptic force-feedback device, it provides the user with concurrent feedback of contact location and interaction forces. We believe such a design will enable more versatile object manipulation and richer haptic interactions. To evaluate this display concept, we conducted two perceptual experiments. First, human subjects judged object curvature using both direct manipulation of physical models and virtual manipulation via the device. Results show similar levels of discrimination in real and virtual interactions, indicating the device can effectively portray contact information. Secondly, we investigated virtual interactions with rolling and anchored objects and demonstrated that users are able to distinguish the interaction type using our device. These experiments give insight into the sensitivity of human perception and suggest that even a simple display of the contact centroid location may significantly enhance telerobotic or virtual grasping tasks.

VISHARD10, a novel hyper-redundant haptic interface

Abstract: This paper presents and discusses the design of a novel hyper-redundant haptic interface with 10 degrees-of-freedom (DOF). The use of additional joints allow:; a significantly larger workspace, while reducing the overall device size. Moreover, an increase in a variety of dexterity measures and a singularity robust redundancy resolution can be achieved. Numerical simulations of standard methods for inverse kinematics resolution, namely pseudo inverse control and the projection of some side criterion on the nullspace of the Jacobian are compared and evaluated.

Haptic sensations for tactile feedback interface devices

Abstract: Haptic sensations for tactile feedback computer interface devices. In one method, a tactile sensation is output during the interaction of a cursor and a graphical object, the tactile sensation being based on a periodic waveform and having a frequency correlated with a size of the graphical object interacted with the cursor. Another method includes receiving an indication of a position of a cursor, causing the cursor to snap to a graphical object, such as a line, when the cursor is within a predetermined distance so that the cursor can be moved along or within the graphical object, and enabling the output of a vibration sensation while the cursor is moved along or within the object. In another method, a tactile sensation includes a pop sensation that is a short, high magnitude sensation, and then a ringing sensation during or immediately after the output of the pop sensation and which can fade in magnitude over time.

Haptic interface device and actuator assembly providing linear haptic sensations

Abstract: An interface device and method providing haptic sensations to a user. A user physically contacts a housing of the interface device, and a sensor device detects the manipulation of the interface device by the user. An actuator assembly includes an actuator that provides output forces to the user as haptic sensations. In one embodiment, the actuator outputs a rotary force, and a flexure coupled to the actuator moves an inertial mass and/or a contact member. The flexure can be a unitary member that includes flex joints allowing a portion of the flexure to be linearly moved. The flexure can converts rotary force output by the actuator to linear motion, where the linear motion causes a force that is transmitted to the user. In another embodiment, the actuator outputs a force, and a mechanism coupling the actuator to the device housing uses the force to move the actuator with respect to the device housing. The actuator acts as an inertial mass when in motion to provide an inertial force that can be transmitted to the user. The mechanism can be a flexure including at least one flex joint or a mechanism with bearings.