| Citation: | SONG Rui, SUN Xiaoying, LIU Guohonget al. Influence of mechanical vibration on characteristics of plane tactile sensing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(2): 379-387. doi: 10.13700/j.bh.1001-5965.2019.0193(in Chinese)
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Tactile reproduction technology on touch screens enhances the sense of reality and richness of users' interaction experience. In the process of tactile reproduction, masking effect changes tactile perception characteristics (both absolute threshold and differential threshold), and influences the accuracy of tactile rendering model and the reality of tactile reproduction effect. Based on tactile reproduction device with mechanical vibration, squeeze film effect and electrostatic force, through "three-down-one-up" experimental method, we studied tactile feedback perception characteristics of squeeze film effect when the tactile feedback of five kinds of mechanical vibrations with different amplitudes were taken as masking stimulus. We also compared the results with those targeted by electrostatic force. The conclusions are drawn as follow:In terms of absolute threshold, when the mechanical vibration stimulation intensity increases from 0 V to 100 V, the absolute threshold of squeeze film effect increases 35.31%, from 34.30 V to 46.41 V, and the increase is 14.95% of the electrostatic absolute threshold growth. In terms of the differential thresholds, when the mechanical vibration stimulation intensity increases from 0 V to 100 V, the differential thresholds of squeeze film effect float within the range of (15.21±0.67) V, similar as the changing trend of electrostatic force tactile feedback.
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