Point-Wise Vibration Pattern Production via a Sparse Actuator Array for Surface Tactile Feedback

• DOI: 10.48550/arxiv.2402.11496
• Publication Date: 2024-02-18
• Authors: Xiaosa Li; Runze Zhao; Chengyue Lu; Xiao Xiao; Wenbo Ding
• Keywords: Sparse array

Surface vibration tactile feedback is capable of conveying various semantic information to humans via the handheld electronic devices, like smartphone, touch panel,and game controller. However, covering whole device contacting surface with dense actuator arrangement can affect its normal use, how produce desired patterns at any contact point only several sparse actuators deployed on handled remains a significant challenge. In this work, we develop board five in size and achieve precise pattern production that focus position all over board. Specifically, investigate characteristics single passive coil actuator, construct model surface. Optimal phase amplitude modulation, found simulated annealing algorithm, employed array. And actuators' are superimposed linearly synthetically generate different onboard energy distribution for sensing. Experiments demonstrated point-wise our achieved an average level about 0.9 Structural Similarity Index Measure (SSIM) evaluation, when compared ideal single-point-focused target pattern. The array be easily embedded into usual which shows good implication enriching their haptic interaction functionalities.