Closed loop application of electroadhesion for increased precision in texture rendering
This addresses the challenge of accurate texture rendering in tactile displays for applications like virtual reality or haptic feedback, but it is incremental as it builds on existing friction modulation techniques.
The paper tackled the problem of limited precision in tactile displays due to variable touch conditions by developing a closed-loop electroadhesion method, resulting in precise playback of friction force profiles for rendering everyday textiles.
Tactile displays based on friction modulation offer wide-bandwidth forces rendered directly on the fingertip. However, due to a number of touch conditions (e.g., normal force, skin hydration) that result in variations in the friction force and the strength of modulation effect, the precision of the force rendering remains limited. In this paper we demonstrate a closed-loop electroadhesion method for precise playback of friction force profiles on a human finger and we apply this method to the tactile rendering of several textiles encountered in everyday life.