Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 03, 2023 - September 06, 2023
We have developed a pair of interactive devices for remote haptic detection and presentation using linear coil springs. Previously, we found that coil springs with a small spring constant provide accurate haptic reproduction but cannot reproduce large forces, and those with a large spring constant can reproduce large forces but shows inaccurate haptic reproduction. In this study, we proposed the use of conical springs to improve haptic reproduction since we hypothesized that the non-linear characteristics between deformation and the restoring force of the conical spring take advantage of linear coil springs with small and large spring constants. In the experiment, we applied loads to one of the devices and measured forces reproduced by another device to evaluate haptic reproduction. The result showed that the conical spring provided accurate haptic reproduction in a wider force range than the coil springs. Therefore, we concluded that nonlinear springs are suitable to improve haptic reproduction.
