A miniature proportional valve for a tactile display

In minimally invasive surgery, tactile feedback is lacking. A tactile display, consisting of a matrix of micro-actuators, represents tactile sensations on the fingertip. Miniaturising powerful, dynamic and accurate actuators with a sufficient stroke and bandwidth is a considerable challenge. The use of pneumatics is promising due to the potential for high power density. This paper discusses a proof of concept for taxels driven by pressurised air. The tactile display becomes very simple and light. The challenge moves to the design of a miniaturised proportional pneumatic valve.status: publishe