Analysis of fingertip/textile friction-induced vibration by time-frequency method

摘要: Tactile textures of textiles depend on the non-linear friction vibrations which are generated by fingertip sliding across textile surfaces. It is relatively difficult to understand these complex vibrations, since skin and viscoelastic their vibration spectra too redundant. Currently, method handling such in field tactile evaluation rendering usually adopts Fourier analysis. Unfortunately, only analysis can neither trace multi-scales surface nor delete redundant information. This paper proposed a time-frequency analysis, extends recorded 1-D signals 2-D spaces realize decomposition dimension reduction. By applying this four typical kinds texture surfaces, as grille textiles, results demonstrated that accurately capture major textural features from friction-induced decrease dimensionality signals. Considering merits reduction, could use synthetic virtual design products.