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Full text release has been delayed at the author's request until July 21, 2026

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Modeling and Experimental Evaluation of Haptic Rendering in Touch Surfaces Using Multifrequency Electrostatic Actuation

Rajkumar, Santosh Mohan
http://orcid.org/0000-0002-2849-2129
http://rave.ohiolink.edu/etdc/view?acc_num=miami1689901902087252

Abstract Details

2023, Master of Science, Miami University, Mechanical Engineering.
Available devices with smaller touchscreen displays (TSDs) offer users adequate haptic feedback, whereas larger TSDs still lack meaningful tactile sensations. This study is focused on rendering vibrotactile feedback on large TSDs. Existing methods for localized vibrotactile rendering on large TSDs use many actuators. Practically, using many actuators is not desirable due to space constraints, power supply limitations, etc., for consumer-centric large TSD devices. Therefore, this study investigates localized vibrotactile feedback on large TSDs using a restricted number of electrostatic resonant actuators (ERAs). Using flexible boundary conditions combined with multi-frequency excitation, a novel method is presented to render localized vibrotactile feedback for two types of large TSDs: a narrow touch bar and a rectangular touch surface. A method for managing/positioning localized haptic feedback on large TSDs is also investigated. In-house finite-element-based simulation models of TSDs are developed along with experimental prototypes for verifying the vibrotactile performance. The modeling and analysis strategy presented here is general and can be extended for haptic rendering methods of different touch surfaces, actuators, and boundary conditions. Finally, model-based parametric studies are presented for better design considerations and improved vibrotactile intensity.
Kumar Singh (Advisor)
Jeong-Hoi Koo (Advisor)
James Chagdes (Committee Member)
121 p.
Electrical Engineering; Engineering; Mechanical Engineering
Haptic Actuator; Haptic Feedback; Vibrotactile Feedback; Electrostatic Actuator; Haptic Localization; Freely Positionable Vibrotactile System; Large Touch Screen Haptics

Recommended Citations

Citations

  • Rajkumar, S. M. (2023). Modeling and Experimental Evaluation of Haptic Rendering in Touch Surfaces Using Multifrequency Electrostatic Actuation [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1689901902087252

    APA Style (7th edition)

  • Rajkumar, Santosh. Modeling and Experimental Evaluation of Haptic Rendering in Touch Surfaces Using Multifrequency Electrostatic Actuation. 2023. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1689901902087252.

    MLA Style (8th edition)

  • Rajkumar, Santosh. "Modeling and Experimental Evaluation of Haptic Rendering in Touch Surfaces Using Multifrequency Electrostatic Actuation." Master's thesis, Miami University, 2023. http://rave.ohiolink.edu/etdc/view?acc_num=miami1689901902087252

    Chicago Manual of Style (17th edition)

miami1689901902087252
© 2023, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.