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IEEE Transactions on Haptics

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https://www.readbyqxmd.com/read/28600261/haptic-orientation-guidance-using-two-parallel-double-gimbal-control-moment-gyroscopes
#1
Julie Walker, Heather Culbertson, Michael Raitor, Allison Okamura
This paper presents a system of two double-gimbal control moment gyroscopes (CMGs) for providing ungrounded kinesthetic haptic feedback. By spinning a second flywheel opposite the first, and rotating them through opposite trajectories, undesired gyroscopic effects can be eliminated, isolating a single torque axis. This produces a moment pulse proportional to the flywheel spin speed and rotation speed. Rotating the CMG gimbals quickly in one direction, then resetting them more slowly generates repeated torque pulses indicating a clear direction cue...
June 7, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28574369/a-multi-finger-interface-with-mr-actuators-for-haptic-applications
#2
Huanhuan Qin, Aiguo Song, Zhan Gao, Yuqing Liu, Guohua Jiang
Multi-finger operations provide realistic and natural methods when interacting with remote or virtual environment. Hence, haptic devices with multi-finger input are highly desirable. MR (Magneto-rheological) actuators are preferable options in haptics, because they can produce larger passive torque and have larger torque-volume ratios than the conventional actuators. Among the existing haptic MR actuators, most of them are still bulky and heavy. If they were smaller and lighter, they would become more suitable for haptics...
May 29, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28534787/effect-of-waveform-on-tactile-perception-by-electrovibration-displayed-on-touch-screens
#3
Yasemin Vardar, Burak Guclu, Cagatay Basdogan
In this study, we investigated the effect of input voltage waveform on our haptic perception of electrovibration on touch screens. Through psychophysical experiments performed with eight subjects, we first measured the detection thresholds of electrovibration stimuli generated by sinusoidal and square voltages at various fundamental frequencies. We observed that the subjects were more sensitive to stimuli generated by square wave voltage than sinusoidal one for frequencies lower than 60 Hz. Using Matlab simulations, we showed that the sensation difference of waveforms in low fundamental frequencies occurred due to the frequency-dependent electrical properties of human skin and human tactile sensitivity...
May 16, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28500008/wearable-haptic-systems-for-the-fingertip-and-the-hand-taxonomy-review-and-perspectives
#4
Claudio Pacchierotti, Stephen Sinclair, Massimiliano Solazzi, Antonio Frisoli, Vincent Hayward, Domenico Prattichizzo
In the last decade, we have witnessed a drastic change in the form factor of audio and vision technologies, from heavy and grounded machines to lightweight devices that naturally fit our bodies. However, only recently, haptic systems have started to be designed with wearability in mind. The wearability of haptic systems enables novel forms of communication, cooperation, and integration between humans and machines. Wearable haptic interfaces are capable of communicating with the human wearers during their interaction with the environment they share, in a natural and yet private way...
May 9, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28436890/in-situ-force-augmentation-improves-surface-contact-and-force-control
#5
Randy Lee, Roberta Klatzky, George Stetten
Surgeons routinely perform surgery with noisy, sub-threshold, or obscured visual and haptic feedback, either due to the necessary surgical approach, or because the systems on which they are operating are exceedingly delicate. Technological solutions incorporating haptic feedback augmentation have been proposed to address these difficulties, but the consequences for motor control have not been directly investigated and quantified. In this paper, we present two isometric force generation tasks performed with a hand-held robotic tool that provides in-situ augmentation of force sensation...
April 24, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28436889/design-and-implementation-of-a-tactile-stimulation-device-to-increase-auditory-discrimination
#6
Shahrzad Abbasi Baharanchi, Majid MohammadBeigi, Fatemeh Abnavi, Samira Tavakol
Reading is a complex process that requires various simultaneous brain processes. One of the most common types of reading disorders is developmental dyslexia, and one of the objectives of speech therapy sessions for children with developmental dyslexia is to increase their auditory discrimination. One of the most commonly used Auditory Discrimination Tests (ADTs) is Wepman's Auditory Discrimination Test (WADT). It includes minimal pair words categorized by characteristics of vowels and consonants. The goal of this research is to design and implement a tactile stimulation device based on Wepman's test to increase auditory discrimination in children with developmental dyslexia in therapy sessions, so that while playing each word for the children, vibrational cues are presented to their left palm and fingers...
April 24, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28391207/evaluation-of-wearable-haptic-systems-for-the-fingers-in-augmented-reality-applications
#7
Maurizio Maisto, Claudio Pacchierotti, Francesco Chinello, Gionata Salvietti, Alessandro De Luca, Domenico Prattichizzo
Although Augmented Reality (AR) has been around for almost five decades, only recently we have witnessed AR systems and applications entering in our everyday life. Representative examples of this technological revolution are the smartphone games "PokĀ“emon GO" and "Ingress" or the Google Translate real-time sign interpretation app. Even if AR applications are already quite compelling and widespread, users are still not able to physically interact with the computer-generated reality. In this respect, wearable haptics can provide the compelling illusion of touching the superimposed virtual objects without constraining the motion or the workspace of the user...
April 5, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28368831/continuous-movement-tracking-performance-for-predictable-and-unpredictable-tasks-with-vibrotactile-feedback
#8
Peter B Shull, Xiangyang Zhu, Mark R Cutkosky
The purpose of this paper was to determine human movement tracking performance in response to vibrotactile feedback tracking for predictable and unpredictable continuous movement tasks. Thirteen subjects performed elbow flexion/extension and knee flexion/extension continuous movement tracking tasks while receiving tactile stimulation proportional to limb joint position error. Subjects followed 0.2-2.0Hz desired movements for predictable tasks (single sinusoid) and unpredictable tasks (combination of three sinusoids)...
March 29, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28320677/intermanual-apparent-tactile-motion-and-its-extension-to-3d-interactions
#9
Siyan Zhao, Ali Israr, Micah Fenner, Roberta Klatzky
Information provided by sensory systems is inherently ambiguous as to its source in the physical world. To arrive at a coherent representation, perception deploys heuristic rules and multimodal input, which potentially produce errors such as illusions. The current work uses these effects to create apparent tactile motion and illusory depth motion using sparse vibrotactile stimulation across the hands. Experiment 1 showed the effects of vibrotactile duration and temporal separation between the hands on the quality of perceived illusory linear motion...
March 13, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28287982/torque-contribution-to-haptic-rendering-of-virtual-textures
#10
Sahba Aghajani Pedram, Roberta L Klatzky, Peter Berkelman
Despite the fact that conventional haptic interfaces and rendering algorithms commonly approximate interactions with force only, the dynamic effects of even simple tasks, e.g. writing on a paper, involve both forces and torques. To extend previous algorithms as well as to investigate the effects of torque feedback on human roughness perception, we deployed a novel haptic platform with two probes, fingertip and penhandle. Three torque conditions were examined: 1) Slope Torque, which orients the probe perpendicular to the surface, 2) No Torque, where no active torque is provided by the device, and 3) Stiff Torque, where torque feedback is provided to keep the probe upright...
March 7, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28237933/three-dimensional-skin-deformation-as-force-substitution-wearable-device-design-and-performance-during-haptic-exploration-of-virtual-environments
#11
Samuel B Schorr, Allison Okamura
Virtual reality systems would benefit from a compelling force sensory substitute when workspace or stability limitations prevent the use of kinesthetic force feedback systems. We present a wearable fingertip haptic device with the ability to make and break contact in addition to rendering both shear and normal skin deformation to the fingerpad. A delta mechanism with novel bias spring and tether actuator relocation method enables the use of high-end motors and encoders, allowing precise device control: 10 Hz bandwidth and 0...
February 22, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28237932/effects-of-concurrent-and-delayed-visual-feedback-on-motor-memory-consolidation
#12
Dangxiao Wang, Teng Li, Gaofeng Yang, Yuru Zhang
In many domains, it's important to understand the ways in which humans learn and develop new motor skills effectively and efficiently. For example, in dental operations, the ability to apply a weak force with a required tolerance is a fundamental skill to ensure diagnostic and treatment outcome, but acquiring such a skill is a challenge for novices. In this paper, we focus on motor memory for producing normally applied force by a hand-held probe and we compare the effects of two feedback methods on motor memory consolidation...
February 22, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28222002/friction-reduction-through-ultrasonic-vibration-part-1-modelling-intermittent-contact
#13
Eric Vezzoli, Zlatko Virdih, Vincenzo Giamundo, Betty Lemaire-Semail, Frederic Giraud, Tomaz Rodic, Djordje Peric, Michael Adams
Ultrasonic vibration is employed to modify the friction of a finger pad in way that induces haptic sensations. A combination of intermittent contact and squeeze film levitation has been previously proposed as the most probable mechanism. In this paper, in order to understand the underlying principles that govern friction modulation by intermittent contact, numerical models based on finite element (FE) analysis and also a spring-Coulombic slider are developed. The physical input parameters for the FE model are optimised by measuring the contact phase shift between a finger pad and a vibrating plate...
February 17, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28222001/friction-reduction-through-ultrasonic-vibration-part-2-experimental-evaluation-of-intermittent-contact-and-squeeze-film-levitation
#14
Thomas Sednaoui, Eric Vezzoli, Brygida Maria Dzidek, Betty Lemaire-Semail, Cedrick Chappaz, Michael Adams
In part 1 of the current study of haptic displays, a finite element (FE) model of a finger exploring a plate vibrating out-of-plane at ultrasonic frequencies was developed as well as a spring-frictional slider model. It was concluded that the reduction in friction induced by the vibrations could be ascribed to ratchet mechanism as a result of intermittent contact. The relative reduction in friction calculated using the FE model could be superimposed onto an exponential function of a dimensionless group defined from relevant parameters...
February 17, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28092577/social-touch-technology-a-survey-of-haptic-technology-for-social-touch
#15
Gijs Huisman
This survey provides an overview of work on haptic technology for social touch. Social touch has been studied extensively in psychology and neuroscience. With the development of new technologies it is now possible to engage in social touch at a distance or engage in social touch with artificial social agents. Social touch research has inspired research into technology mediated social touch, and this line of research has found effects similar to actual social touch. The importance of haptic stimulus qualities, multimodal cues, and contextual factors in technology mediated social touch is discussed...
January 9, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28328500/the-role-of-haptic-feedback-in-robotic-assisted-retinal-microsurgery-systems-a-systematic-review
#16
Julia A Griffin, Weihang Zhu, Chang S Nam
Retinal microsurgery is one of the most technically difficult surgeries since it is performed at the threshold of human capability. If certain retinal conditions are left untreated, they can lead to severe damage, including irreversible blindness. Thus, techniques for reliable retinal microsurgery operations are critical. Recent research shows promise for improving surgical safety by implementing various types of sensory input and output. Sensory information is used to inform the surgeon about the environment inside the eye in real time...
January 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28328499/importance-of-matching-physical-friction-hardness-and-texture-in-creating-realistic-haptic-virtual-surfaces
#17
Heather Culbertson, Katherine J Kuchenbecker
Interacting with physical objects through a tool elicits tactile and kinesthetic sensations that comprise your haptic impression of the object. These cues, however, are largely missing from interactions with virtual objects, yielding an unrealistic user experience. This article evaluates the realism of virtual surfaces rendered using haptic models constructed from data recorded during interactions with real surfaces. The models include three components: surface friction, tapping transients, and texture vibrations...
January 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28113382/comparative-evaluation-of-tactile-sensation-by-electrical-and-mechanical-stimulation
#18
Vibol Yem, Hiroyuki Kajimoto
An electrotactile display is a tactile interface that provides tactile perception by passing electrical current through the surface of the skin. It is actively used instead of mechanical tactile displays for tactile feedback because of several advantages such as its small and thin size, light weight, and high responsiveness. However, the similarities and differences between these sensations is still not clear. This study directly compares the intensity sensation of electrotactile stimulation to that of mechanical stimulation, and investigates the characteristic sensation of anodic and cathodic stimulation...
January 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28055906/haptics-in-music-the-effects-of-vibrotactile-stimulus-in-low-frequency-auditory-difference-detection-tasks
#19
Gareth W Young, Dave Murphy, Jeffrey Weeter
We present an experiment that investigated the effect of vibrotactile stimulation in auditory pitch discrimination tasks. Extra-auditory information was expected to have some influence upon the frequency discrimination of auditory Just Noticeable Difference (JND) detection levels at 160 Hz. To measure this, the potential to correctly identified positive and negative frequency changes for two randomly divided groups was measured and then compared. The first group was given an audio only JND test and the second group was given the same test, but with additional vibrotactile stimulus delivered via a vibrating glove device...
January 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/27705863/an-integrated-approach-to-characterize-the-behavior-of-a-human-fingertip-in-contact-with-a-silica-window
#20
Maria Laura D'Angelo, Ferdinando Cannella, Matteo Bianchi, Mariapaola D'Imperio, Edoardo Battaglia, Mattia Poggiani, Gianluca Rossi, Antonio Bicchi, Darwin G Caldwell
Understanding the mechanisms of human tactual perception represents a challenging task in haptics and humanoid robotics. A classic approach to tackle this issue is to accurately and exhaustively characterize the mechanical behavior of human fingertip. The output of this characterization can then be exploited to drive the design of numerical models, which can be used to investigate in depth the mechanisms of human sensing. In this work, we present a novel integrated measurement technique and experimental set up for in vivo characterization of the deformation of the human fingertip at contact, in terms of contact area, force, deformation, and pressure distribution...
January 2017: IEEE Transactions on Haptics
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