Open AccessJournal Article
Mechanical design and control of a high-bandwidth shape memory alloy tactile display
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TLDR
In this paper, a tactile shape display which can be used to convey small scale shape in teleoperation and virtual environments has been constructed, where a line of 10 pins spaced 2 mm on center are each actuated with a shape memory alloy wire.Abstract:
We have constructed a tactile shape display which can be used to convey small scale shape in teleoperation and virtual environments. A line of 10 pins spaced 2 mm on center are each actuated with a shape memory alloy wire. A combination of careful mechanical design and liquid cooling allows a simple proportional controller with constant current feed forward to achieve 40 Hz bandwidth. To quantify the value of increased bandwidth, an experiment involving a prototypical search task has been conducted using the display. A digital filter limited the frequency response of the display to three cutoff frequencies: 1, 5 and 30 Hz. Subjects were able to complete the search more than 6 times as quickly with 30 Hz bandwidth than with 1 Hz.read more
Citations
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Journal ArticleDOI
A review of shape memory alloy research, applications and opportunities
TL;DR: Shape memory alloys (SMAs) are a class of shape memory materials (SMMs) which have the ability to "memorise" or retain their previous form when subjected to certain stimulus such as thermomechanical or magnetic variations.
Proceedings ArticleDOI
A compliant tactile display for teletaction
TL;DR: This paper describes the fabrication and performance of a one-piece pneumatically-actuated tactile display molded from silicone rubber, which has no chamber leakage and no seal friction.
Tactile Display Device Using Distributed Lateral Skin Stretch
TL;DR: A tactile display device is described in this paper which is distinguished by the fact that it relies exclusively on lateral skin stretch stimulation, constructed from an array of 64 closely packed piezoelectric actuators connected to a membrane.
Tactile interfaces: a state-of-the-art survey
TL;DR: This paper reports the progress in tactile interfaces technology in the following areas: teleoperation, telepresence, sensory substitution, 3D surface generation, Braille systems, laboratory prototypes, and games.
References
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Journal ArticleDOI
Tactile spatial resolution. I. Two-point discrimination, gap detection, grating resolution, and letter recognition
Kenneth O. Johnson,John Phillips +1 more
Journal ArticleDOI
Tactile display of vibratory information in teleoperation and virtual environments
TL;DR: In inspection and exploration tasks the detection of vibrations can be the fundamental goal of the task, while in some manipulation tasks vibrations can enhance performance by reducing reaction times or permitting minimization of ferees.
Journal ArticleDOI
Remote palpation technology
TL;DR: The authors are working to develop new technology to rectify this sensory deficit by relaying tactile information from the surgical site to the surgeon by developing a variety of tactile sensors that can be mounted in a probe or surgical instrument.
Proceedings ArticleDOI
Micro/miniature shape memory alloy actuator
TL;DR: Shape memory alloy (SMA) has great potential for microminiature actuators and combined with electric resistance feedback and position feedback, it enables the author to control stiffness of SMA directly and to sense force without a force sensor.
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