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2016


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Numerical Investigation of Frictional Forces Between a Finger and a Textured Surface During Active Touch

Khojasteh, B., Janko, M., Visell, Y.

Extended abstract presented in form of an oral presentation at the 3rd International Conference on BioTribology (ICoBT), London, England, September 2016 (misc)

Abstract
The biomechanics of the human finger pad has been investigated in relation to motor behaviour and sensory function in the upper limb. While the frictional properties of the finger pad are important for grip and grasp function, recent attention has also been given to the roles played by friction when perceiving a surface via sliding contact. Indeed, the mechanics of sliding contact greatly affect stimuli felt by the finger scanning a surface. Past research has shed light on neural mechanisms of haptic texture perception, but the relation with time-resolved frictional contact interactions is unknown. Current biotribological models cannot predict time-resolved frictional forces felt by a finger as it slides on a rough surface. This constitutes a missing link in understanding the mechanical basis of texture perception. To ameliorate this, we developed a two-dimensional finite element numerical simulation of a human finger pad in sliding contact with a textured surface. Our model captures bulk mechanical properties, including hyperelasticity, dissipation, and tissue heterogeneity, and contact dynamics. To validate it, we utilized a database of measurements that we previously captured with a variety of human fingers and surfaces. By designing the simulations to match the measurements, we evaluated the ability of the FEM model to predict time-resolved sliding frictional forces. We varied surface texture wavelength, sliding speed, and normal forces in the experiments. An analysis of the results indicated that both time- and frequency-domain features of forces produced during finger-surface sliding interactions were reproduced, including many of the phenomena that we observed in analyses of real measurements, including quasiperiodicity, harmonic distortion and spectral decay in the frequency domain, and their dependence on kinetics and surface properties. The results shed light on frictional signatures of surface texture during active touch, and may inform understanding of the role played by friction in texture discrimination.

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[BibTex]

2016


[BibTex]


Behavioral Learning and Imitation for Music-Based Robotic Therapy for Children with Autism Spectrum Disorder
Behavioral Learning and Imitation for Music-Based Robotic Therapy for Children with Autism Spectrum Disorder

Burns, R., Nizambad, S., Park, C. H., Jeon, M., Howard, A.

Workshop paper (5 pages) at the RO-MAN Workshop on Behavior Adaptation, Interaction and Learning for Assistive Robotics, August 2016 (misc)

Abstract
In this full workshop paper, we discuss the positive impacts of robot, music, and imitation therapies on children with autism. We also discuss the use of Laban Motion Analysis (LMA) to identify emotion through movement and posture cues. We present our preliminary studies of the "Five Senses" game that our two robots, Romo the penguin and Darwin Mini, partake in. Using an LMA-focused approach (enabled by our skeletal tracking Kinect algorithm), we find that our participants show increased frequency of movement and speed when the game has a musical accompaniment. Therefore, participants may have increased engagement with our robots and game if music is present. We also begin exploring motion learning for future works.

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link (url) [BibTex]

link (url) [BibTex]


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Design and evaluation of a novel mechanical device to improve hemiparetic gait: a case report

Fjeld, K., Hu, S., Kuchenbecker, K. J., Vasudevan, E. V.

Extended abstract presented at the Biomechanics and Neural Control of Movement Conference (BANCOM), 2016, Poster presentation given by Fjeld (misc)

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Project Page [BibTex]

Project Page [BibTex]


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One Sensor, Three Displays: A Comparison of Tactile Rendering from a BioTac Sensor

Brown, J. D., Ibrahim, M., Chase, E. D. Z., Pacchierotti, C., Kuchenbecker, K. J.

Hands-on demonstration presented at IEEE Haptics Symposium, Philadelphia, Pennsylvania, USA, April 2016 (misc)

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[BibTex]

[BibTex]


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Designing Human-Robot Exercise Games for Baxter

Fitter, N. T., Hawkes, D. T., Johnson, M. J., Kuchenbecker, K. J.

2016, Late-breaking results report presented at the IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) (misc)

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Project Page [BibTex]

Project Page [BibTex]


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IMU-Mediated Real-Time Human-Baxter Hand-Clapping Interaction

Fitter, N. T., Huang, Y. E., Mayer, J. P., Kuchenbecker, K. J.

2016, Late-breaking results report presented at the {\em IEEE/RSJ International Conference on Intelligent Robots and Systems} (misc)

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[BibTex]

[BibTex]

2015


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Haptic Textures for Online Shopping

Culbertson, H., Kuchenbecker, K. J.

Interactive demonstrations in The Retail Collective exhibit, presented at the Dx3 Conference in Toronto, Canada, March 2015 (misc)

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[BibTex]

2015


[BibTex]

2012


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Simon Game with Data-driven Visuo-audio-haptic Buttons

Castillo, P., Romano, J. M., Kuchenbecker, K. J.

Hands-on demonstration presented at IEEE Haptics Symposium, Vancouver, Canada, March 2012 (misc)

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[BibTex]

2012


[BibTex]


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Haptic Vibration Feedback for a Teleoperated Ground Vehicle

Healey, S. K., McMahan, W., Kuchenbecker, K. J.

Hands-on demonstration presented at IEEE Haptics Symposium, Vancouver, Canada, March 2012 (misc)

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[BibTex]

[BibTex]


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A Biofidelic CPR Manikin With Programmable Pneumatic Damping

Stanley, A. A., Healey, S. K., Maltese, M. R., Kuchenbecker, K. J.

Hands-on demonstration presented at IEEE Haptics Symposium, Vancouver, Canada, March 2012, Finalist for Best Hands-on Demonstration Award (misc)

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[BibTex]

[BibTex]


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StrokeSleeve: Real-Time Vibrotactile Feedback for Motion Guidance

Bark, K., Cha, E., Tan, F., Jax, S. A., Buxbaum, L. J., Kuchenbecker, K. J.

Hands-on demonstration presented at IEEE Haptics Symposium, Vancouver, Canada, Vancouver, Canada, March 2012 (misc)

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[BibTex]

[BibTex]


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Pen Tablet Drawing Program with Haptic Textures

Castillo, P., Romano, J. M., Culbertson, H., Mintz, M., Kuchenbecker, K. J.

Hands-on demonstration presented at IEEE Haptics Symposium, Vancouver, Canada, March 2012 (misc)

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[BibTex]

[BibTex]


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Exploring Presentation Timing through Haptic Reminders

Tam, D., Kuchenbecker, K. J., MacLean, K., McGrenere, J.

Hands-on demonstration presented at IEEE Haptics Symposium, Vancouver, Canada, March 2012 (misc)

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[BibTex]

[BibTex]


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HALO: Haptic Alerts for Low-hanging Obstacles in White Cane Navigation

Wang, Y., Koch, E., Kuchenbecker, K. J.

Hands-on demonstration presented at IEEE Haptics Symposium, Vancouver, Canada, March 2012, Finalist for Best Hands-on Demonstration Award (misc)

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[BibTex]

[BibTex]


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VerroTeach: Visuo-audio-haptic Training for Dental Caries Detection

Maggio, M. P., Parajon, R., Kuchenbecker, K. J.

Hands-on demonstration presented at IEEE Haptics Symposium, Vancouver, Canada, March 2012, {B}est Demonstration Award (three-way tie) (misc)

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[BibTex]

[BibTex]


Estimation of MIMO Closed-Loop Poles using Transfer Function Data
Estimation of MIMO Closed-Loop Poles using Transfer Function Data

Vardar, Y.

Eindhoven University of Technology, the Netherlands, 2012 (mastersthesis)

Abstract
For the development of high-tech systems such as lithographic positioning systems, throughput and accuracy are the main requirements. Nowadays, the trend to reach demanded accuracy and throughput levels is designing lightweight and consequently more flexible systems. To control these systems with a more effective and less conservative way, control design should go beyond the traditional rigid control and cope with the flexibilities that limit achievable bandwidth and performance. Therefore, conventional loop shaping methods are not sufficient to reach the performance criterions. Since obtaining an accurate parametric model is very complex and time-consuming for these high-tech systems, using well-developed model-based controller synthesis methods is also not a superior option. To achieve desired performance criterions, one solution can be implemented is reducing the gap between model-based and data-based control synthesis methods. In previous research, a method was developed to define the dynamic behavior of the system without a need for a parametric model. By this method transfer function data (TFD), which provides the information on the whole s-plane can be obtained from frequency response data (FRD) of the system. This innovation was a very important step to use data-based techniques for model-based controller synthesis methods. In this thesis firstly the standard technique to obtain TFD defined in [2] is extended. This standard technique to obtain TFD is not compatible with systems with pure integrators. To extend the methodology also for those systems, two techniques, which are altering the contour and filtering the system, are proposed. Then, the accuracy of TFD is investigated in detail. It is shown that the accuracy of TFD depends on the quality of FRD obtained and the computation techniques used to calculate TFD. Then, a technique which enables to determine the closed-loop poles of a MIMO system using TFD is discussed. The validity of the technique is proven with the help of complex function theory and calculus. Also, the factors that prevent determination of the closed-loop poles are discussed. In addition, it is observed that the accuracy of the closed-loop determination method depends on the quality of obtained TFD and the computation techniques. The proposed theory to obtain TFD and determination of closed-loop poles is validated with experiments conducted to a prototype lightweight system. Also, using experimental frequency response data of NXT-A7 test rig, the success of the proposed methodology is validated also for complex systems. Through these experimental results, it can be concluded that this new technique could be very advantageous in terms of ease of use and accuracy to determine the closed-loop poles of a MIMO lightly damped system.

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[BibTex]

[BibTex]

2007


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Comparing Visual and Haptic Position Feedback

Kuchenbecker, K. J., Gurari, N., Okamura, A. M.

Hands-on demonstration at IEEE World Haptics Conference, Tsukuba, Japan, March 2007 (misc)

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[BibTex]

2007


[BibTex]