Next Article in Journal
Practical Considerations for Accuracy Evaluation in Sensor-Based Machine Learning and Deep Learning
Previous Article in Journal
Investigation of the Precision in Geodetic Reference-Point Positioning Because of Temperature-Induced Pillar Deflections
Previous Article in Special Issue
A Novel Deep-Learning-Based Bug Severity Classification Technique Using Convolutional Neural Networks and Random Forest with Boosting
Open AccessArticle

Transparent Film-Type Vibrotactile Actuator Array and Its Haptic Rendering Using Beat Phenomenon

Advanced Technology Research Center, Interdisciplinary Program in Creative Engineering, Korea University of Technology and Education, Cheonan-si 31253, Korea
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(16), 3490; https://doi.org/10.3390/s19163490
Received: 29 May 2019 / Revised: 3 August 2019 / Accepted: 7 August 2019 / Published: 9 August 2019
The most important thing in a thin and soft haptic module with an electroactive polymer actuator array is to increase its vibrotactile amplitude and to create a variety of vibrotactile sensations. In this paper, we introduce a thin film-type electroactive polymer actuator array capable of stimulating two types of human mechanoreceptors simultaneously, and we present a haptic rendering method that maximizes the actuators’ vibrational force without improving the array’s haptic performance. The increase in vibrational amplitude of the soft electroactive polymer actuator array is achieved by creating a beat vibration, which is an interference pattern of two vibrations with slightly different frequencies. The textures of a target object are translated into haptic stimuli using the proposed method. We conducted qualitative and quantitative experiments to evaluate the performance of the proposed rendering method. The results showed that this method not only amplifies the vibration’s amplitude but also haptically simulates various objects’ surfaces. View Full-Text
Keywords: vibrotactile actuator array; beat phenomenon; haptic simulation; vibration frequency; carrier frequency vibrotactile actuator array; beat phenomenon; haptic simulation; vibration frequency; carrier frequency
Show Figures

Figure 1

MDPI and ACS Style

Choi, D.-S.; Kim, S.-Y. Transparent Film-Type Vibrotactile Actuator Array and Its Haptic Rendering Using Beat Phenomenon. Sensors 2019, 19, 3490.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop