Shunsuke Yoshida

George Washington University, Washington, D. C., DC, United States

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Publications (10)1.04 Total impact

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    ABSTRACT: We have designed and fabricated a tactile array sensors with three inclined micro-cantilevers embedded in elastomer, which can detect both normal and shear stresses. In this paper, we confirmed gripping status classification using sensor output. Using our sensor, four gripping status (free, grasping, holding and slipping) could be classified significantly.
    Transactions of the Society of Instrument and Control Engineers. 01/2011; 47(1):40-42.
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    ABSTRACT: We are developing a minute tactile sensor having four cantilevers for sensing pressure and shear forces simultaneously and for distributing over a small area to recognize a certain area’s conditions. Toward our goal, another important task is to establish, in parallel with the sensor’s fabrication, a computing method that converts measured signals to applied forces. In this paper, we first investigate our sensing mechanism using a centimeter scale mockup of the actual sensor. Then, we formulate the relationship between the applied forces and the sensor outputs by a numerical analysis using a sufficient number of pairings of the forces and outputs. Finally, we examine the potential of the method.
    Haptics: Perception, Devices and Scenarios, 6th International Conference, EuroHaptics 2008, Madrid, Spain, June 10-13, 2008, Proceedings; 01/2008
  • Shunsuke Yoshida, Terukazu Mizota, Haruo Noma
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    ABSTRACT: A distributed tactile sensor that can sense multi-axis forces and is high-densely arrayed is required in such VR applications as robotic hands and glove-like controllers in tele-existence systems. We are developing elements of a tactile sensor that can simultaneously measure pressure and shear force, and they are small enough to be arrayed densely in small areas due to MEMS process fabrication. However, the signal processing of numerous sensor elements remains a serious problem. In this paper, we studied a solution by a strategy of distributed processing and examined its effectiveness in a simulated environment
    IEEE Virtual Reality Conference, VR 2007, 10-14 March 2007, Charlotte, NC, USA, Proceedings; 01/2007
  • Shunsuke YOSHIDA, Kenji SUSAMI, Haruo NOMA, Kenichi HOSAKA
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    ABSTRACT: The “Proactive Desk” is a new human-machine interface for the desktop operations of computers. It provides users with tactile sensation in addition to visual sensation. Two linear induction motors underneath the desk generate a two-dimensional force to move objects and control their positions on the desktop using feedback control, and users feel tactile sensation while handling those objects. In this paper, we examined the effects of adding haptic information to simple mouse operation using the Proactive Desk. In our experiment, we used a button-type visual stimulus with and without haptic information. When using haptic conditions, three types of force feedback pattern were displayed: “Edge,” “Resistance to motion” and “Attractive force,” and each had three force strength conditions: no , half and full . The subject was asked to push buttons twenty times as the buttons were shown one after the other on the desk as quickly as possible. Consequently, the reaction times for pushing the button for all haptic conditions, except for the half-force condition of “Attractive force,” were significantly faster than no-force (without haptic information) condition. This result shows that the haptic information was advantageous for easy operation.
    01/2006;
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    ABSTRACT: In this paper, a new approach for navigation assistance through sets of volumetric data is presented. This innovative method uses force feedback in two dimensions to guide the user to a region of interest. The haptic feedback is calculated under two methods and we explain the implementation of both approaches. The output is displayed by the proactive desk, a two dimensional force feedback device developed at the Advanced Telecommunications Research Institute. This new approach is targeted to scientists who work with sets of volumetric data and who wish to find information using visual scanning enhanced with haptics. Our system is designed for magnetic resonance images (MRI) overlaid with functional MRI.
    World Haptics Conference (WHC 2005), 18-20 March 2005, Pisa, Italy; 01/2005
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    Article: SpotScents
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    ABSTRACT: An abstract is not available.
    01/2005;
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    ABSTRACT: This installation provides painters with a method for feeling attributes of digital colors and a fluid canvas. When a user of this installation moves the stylus paintbrush over the digital canvas, he/she senses the "weight of the colors" through the brush. For example, the user experiences dark colors as heavy in weight and light colors as light in weight. Complex painting is expressed as a mixed tactile sensation using a new desk-style force feedback system called the "Proactive Desk." Other existing digital painting systems that use haptic cues usually aim to be physically and visually correct. In this approach, however, we invested effort in enhancing the relationship between digital colors as a virtual material and the sense of touch. Additionally, we took the importance of co-located drawing work space for creative tasks into account. We believe that this experience will arouse new inspiration and give digital painters the opportunity to experience again how important touch is for creativity in art.
    Proceedings of the 12th ACM International Conference on Multimedia, New York, NY, USA, October 10-16, 2004; 01/2004
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    ABSTRACT: The Proactive Desk is a new digital desk with haptic feedback. The Proactive Desk al lows a user to handle both virtual and real objects on a digital desk with a realistic feeling. We proposed it for a co-experience web that would enable peo ple to share the feelings and ex pe ri enc es of other users via the Internet. In the Proactive Desk, two lin- ear induction motors are equipped to generate an omnidi- rectional translational force on a user's hand or a physical object on the desk without any mechanical link nor wire, thereby preserving the ad van tag es of a digital desk. In this paper, we report ap pli ca tions of the Proactive Desk and the performance of the fi rst trial model.
    Presence Teleoperators &amp Virtual Environments 01/2004; 13(2):146-163. · 1.04 Impact Factor
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    ABSTRACT: Sumi-Nagashi" is an original and traditional Japanese art, similar to "marbling." Attendees will experience the streaming picturesque installation of "Sumi-Nagashi" literally and physically by using a newly developed desk-style force feedback device, "Proactive Desk." Dynamic visual and haptic changes of colors and shapes will arouse new inspiration in painters.
    01/2003;
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    ABSTRACT: A method to record human experience related to sensory modalities other than vision and hearing is proposed. Our "record by re-experience" method does not require high-quality on-site sensing systems. The authoring and display systems for sensory media play very important roles in this approach. In this paper, research and development of display technologies for haptics, locomotion, and olfaction are introduced.