Displacement Visualization at Flexible Interface: A Coordinate Correction Scheme Applicable to High-Accuracy Pressure Distribution Mapping

Abstract

This article reports on the first direct observation of a lateral displacement when normal pressure is applied at a flexible contact interface, using our laboratory’s self-developed displacement visualization system. A coordinate correction scheme that does not depend on specific sensing nodes or sensing units is proposed for lateral displacement introduced pressure distribution mapping. The relative difference between the pressure distribution with or without coordinate correction is up to 6%. As an example of technical and engineering implementation, a schematic of an array design with a feasible manufacturing process is further raised and discussed. The proposed correction scheme provides a theoretical and analytical basis for a variety of high-accuracy measurements of pressure distribution and other physical fields at flexible contact interfaces. Potential applications are believed to be found in the fields of robot tactile, object contour recognition, and other applications that require high-accuracy pressure distribution measurements.