Development of Quantitative Tactile Display Device to Provide Both Pin- Array-Type Tactile Feedback and Thermal Feedback

2007 ◽  
Author(s):  
Gi-Hun Yang ◽  
Ki-Uk Kyung ◽  
M.A. Srinivasan ◽  
Dong-Soo Kwon
Keyword(s):  
Tactile Feedback ◽  
Tactile Display ◽  
Display Device ◽  
Array Type ◽  
Thermal Feedback

scholarly journals Bilaterally Shared Haptic Perception for Human-Robot Collaboration in Grasping Operation

2021 ◽  
Vol 33 (5) ◽  
pp. 1104-1116
Author(s):  
Yoshihiro Tanaka ◽  
Shogo Shiraki ◽  
Kazuki Katayama ◽  
Kouta Minamizawa ◽  
Domenico Prattichizzo ◽  
...  
Keyword(s):  
Haptic Perception ◽  
Tactile Feedback ◽  
Tactile Display ◽  
Just Noticeable Difference ◽  
Robot Arm ◽  
Collaborative Task ◽  
Grasping Force ◽  
The Stability ◽  
Tactile Sensations ◽  
Human Robot Collaboration

Tactile sensations are crucial for achieving precise operations. A haptic connection between a human operator and a robot has the potential to promote smooth human-robot collaboration (HRC). In this study, we assemble a bilaterally shared haptic system for grasping operations, such as both hands of humans using a bottle cap-opening task. A robot arm controls the grasping force according to the tactile information from the human that opens the cap with a finger-attached acceleration sensor. Then, the grasping force of the robot arm is fed back to the human using a wearable squeezing display. Three experiments are conducted: measurement of the just noticeable difference in the tactile display, a collaborative task with different bottles under two conditions, with and without tactile feedback, including psychological evaluations using a questionnaire, and a collaborative task under an explicit strategy. The results obtained showed that the tactile feedback provided the confidence that the cooperative robot was adjusting its action and improved the stability of the task with the explicit strategy. The results indicate the effectiveness of the tactile feedback and the requirement for an explicit strategy of operators, providing insight into the design of an HRC with bilaterally shared haptic perception.

Fabrication of Pixel Array Type FED Device with Carbon Nanotube Emitters

2010 ◽  
Vol 428-429 ◽  
pp. 413-416 ◽  
Author(s):  
Yu Kui Li ◽  
Wen Sheng Xing
Keyword(s):  
Carbon Nanotube ◽  
Field Emission ◽  
Device Fabrication ◽  
Conducting Layer ◽  
Manufacturing Cost ◽  
Display Device ◽  
Flat Panel Display ◽  
Field Emission Display ◽  
Array Type ◽  
Pixel Array

Because of better field emission characteristics, carbon nanotube was a suitable and excellent cathode material for use in the field emission display device. The screen-printing process was adopted in the course of device fabrication for decreasing the manufacturing cost of the pixel array type field emission display. The new simple-structure flat panel display device with carbon nanotube emitters was reported. The design and fabrication process of pixel array cathode structure were also presented. The silver slurry was screen-printed to form the conducting layer, and the insulation slurry was used to form the high quality insulation layer and covering layer, respectively. The whole display device was vacuum-packaged and developed. The fabricated pixel array type field emission display exhibited better field emission performance and adequate brightness.

scholarly journals Design Procedure and Simulation of a Novel Multi-Modal Tactile Display Device for Biomedical Applications

2014 ◽  
Vol 04 (01) ◽  
pp. 7-17 ◽  
Author(s):  
Nader A. Mansour ◽  
Ahmed M. R. Fath El-Bab ◽  
Mohamed Abdellatif
Keyword(s):  
Biomedical Applications ◽  
Design Procedure ◽  
Tactile Display ◽  
Display Device

Verification of Haptic Illusions Using a Haptic Interface and Consideration on its Mechanism

2006 ◽  
Vol 18 (4) ◽  
pp. 476-488 ◽  
Author(s):  
Masayuki Hara ◽  
◽  
Takahiro Higuchi ◽  
Ayaka Ohtake ◽  
Jian Huang ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Human Perception ◽  
Tactile Display ◽  
Haptic Interface ◽  
Display Device ◽  
Haptic Interfaces ◽  
Realistic Force ◽  
Weight Illusion ◽  
New Hypothesis ◽  
Unique Mechanism

In these days, a haptic interface, which is a force/tactile display device, is attracting great interest in virtual reality. With regard to this technology, researchers have reported ways to construct virtual environment and development of new devices with a unique mechanism but rarely explored the relationships between human perception and virtual dynamics. This paper suggests that it is necessary to clarify the relationships to provide more realistic force/tactile sensation for users. The main purpose of this study is to evaluate the force sensations displayed by haptic interfaces. This study focused on two haptic illusion phenomena, which are a haptic horizontal-vertical illusion and a size-weight illusion. Results of experiments using the haptic interface verified that such haptic illusions are reproducible in virtual reality. This implies that perceptual experiments can be realized using haptic interfaces, which may have potential to discover new haptic illusions. Further, this paper attempts to study the size-weight illusion by using functions of the haptic interface such as position and force sensing functions and propose a new hypothesis on the size-weight illusion. These results demonstrate that the effectiveness of haptic interfaces for perceptual experiments.

Configuration of a Novel Sub-Millimeter Resolution Piezoelectric Actuator Based Wearable Tactile Display System for Blind Individuals

2011 ◽  
Author(s):  
Prakash C. R. J. Naidu ◽  
Ramesh Yechangunja ◽  
Mandayam A. Srinivasan
Keyword(s):  
Piezoelectric Actuators ◽  
Body Part ◽  
Tactile Display ◽  
Significant Feature ◽  
Block Type ◽  
Display Device ◽  
Display System ◽  
Potential Applications ◽  
Blind Individuals ◽  
General Communication

This paper presents the work conducted towards the realization of a novel tactile display system, first using block type piezoelectric actuators and later using cantilever type piezoelectric actuators. The system is particularly useful for blind users to communicate with computers through touch, but also has many potential applications in several other fields such as virtual reality, gaming, and other general communication interfaces for sighted users. Although piezoelectric actuators have been used in the past in electronic Braille and other systems, there is no reported configuration that can achieve sub-millimeter center-to-center resolution in an array of programmable actuation pins that act as interfaces in contact with a human body part such as a finger. This paper reports development of a wearable tactile display device: (a) built of block type actuators and its characterization showing that the perception was not adequate for certain purposes; (b) further, a novel arrangement with considerable improvement in perception wherein- (i) two or more vibrating stimulation pins can be located close to each other at the plane of contact with a finger, and (ii) actuated by means of piezoelectric bending elements arranged in a cantilever configuration partially overlapping each other in multiple planes. A significant feature of the unique configuration reported in this paper is that vibratory stimulation can be achieved at finer spatial resolutions than hitherto achieved.

An Electrorheological Tactile Display

1992 ◽  
Vol 1 (2) ◽  
pp. 219-228 ◽  
Author(s):  
G. J. Monkman
Keyword(s):  
Virtual Reality ◽  
Space Exploration ◽  
Aerospace Industry ◽  
Tactile Feedback ◽  
Tactile Display ◽  
Electrorheological Fluids ◽  
Surface Topology ◽  
Design Parameters ◽  
Pilot Training ◽  
Time Varying

In addition to force and torque reflection, teleoperation also requires a degree of tactile feedback. This is particularly important where knowledge of a surface topology is desired, such as might be encountered by an underwater or space exploration vehicle. Similarly, the aerospace industry is presently developing ever increasingly sophisticated virtual reality environments for pilot training. It is felt that, in addition to visual, audio, and torque feedback, some form of tactile feedback would be useful. This paper presents a means by which electrorheological fluids may be used to provide a relatively high resolution tactile display containing virtually no moving parts. Design parameters are outlined and an example of a working model is shown. The extension of this and similar technology to the display of rapidly time varying tactile images is also discussed.

scholarly journals Tacsac: A Wearable Haptic Device with Capacitive Touch-Sensing Capability for Tactile Display

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4780
Author(s):  
Oliver Ozioko ◽  
William Navaraj ◽  
Marion Hersh ◽  
Ravinder Dahiya
Keyword(s):  
Haptic Feedback ◽  
Tactile Feedback ◽  
Tactile Display ◽  
Human Hand ◽  
Dual Function ◽  
Vibrotactile Stimulation ◽  
Wide Range ◽  
Metal Insulator Metal ◽  
Flexible Coil ◽  
Resonance Vibration Frequency

This paper presents a dual-function wearable device (Tacsac) with capacitive tactile sensing and integrated tactile feedback capability to enable communication among deafblind people. Tacsac has a skin contactor which enhances localized vibrotactile stimulation of the skin as a means of feedback to the user. It comprises two main modules—the touch-sensing module and the vibrotactile module; both stacked and integrated as a single device. The vibrotactile module is an electromagnetic actuator that employs a flexible coil and a permanent magnet assembled in soft poly (dimethylsiloxane) (PDMS), while the touch-sensing module is a planar capacitive metal-insulator-metal (MIM) structure. The flexible coil was fabricated on a 50 µm polyimide (PI) sheet using Lithographie Galvanoformung Abformung (LIGA) micromoulding technique. The Tacsac device has been tested for independent sensing and actuation as well as dual sensing-actuation mode. The measured vibration profiles of the actuator showed a synchronous response to external stimulus for a wide range of frequencies (10 Hz to 200 Hz) within the perceivable tactile frequency thresholds of the human hand. The resonance vibration frequency of the actuator is in the range of 60–70 Hz with an observed maximum off-plane displacement of 0.377 mm at coil current of 180 mA. The capacitive touch-sensitive layer was able to respond to touch with minimal noise both when actuator vibration is ON and OFF. A mobile application was also developed to demonstrate the application of Tacsac for communication between deafblind person wearing the device and a mobile phone user who is not deafblind. This advances existing tactile displays by providing efficient two-way communication through the use of a single device for both localized haptic feedback and touch-sensing.

A Thermal Tactile Display Device with Multiple Heat Sources

2012 ◽  
Author(s):  
Mao Zhipeng ◽  
Wu Jianfeng ◽  
Li Jianqing ◽  
Zhou Lianjie ◽  
Li Xiaomin ◽  
...  
Keyword(s):  
Tactile Display ◽  
Display Device ◽  
Heat Sources
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