Variable-Friction Study Based on a Piezoelectric Ultrasonic Tactile Display
Using an ultrasonic lubrication mechanism and extrusion-film effect,a new piezoelectric ultrasonic tactile-display analysis model is proposed and theoretically and experiment allyanalyzed.Using a high extrusion number,the analytical expression of extrusion pressure was derived.A vibration-characteristic experiment was con-ducted on the ultrasonic tactile-display analysis model and a qualitative and quantitative friction-discrimination exper-iment was carried out.The influence of the vibration frequency and excitation voltage on friction reduction was ex-plored and the significant friction-reduction effect of the piezoelectric ultrasonic tactile-display analysis model was verified.This provides a theoretical basis for constructing a tactile-display shear-force model.
extrusion film effectpiezoelectric ultrasoundtactile displayantifriction effect
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