An objective evaluation method of texture roughness based on human tactile perception

Abstract

The invention discloses an objective evaluation method of texture roughness based on human tactile perception characteristics, which comprises the following steps: obtaining a standard texture samplewith known roughness level; By comparing the unknown texture samples with human subjective evaluation experiment, determining the human subjective roughness clustering level of unknown texture samples; collecting the interactive data of the unknown texture sample surface contact, and extracting the objective characteristic parameters; Support vector machine (SVM) algorithm is used to classify andtrain the unknown texture objective characteristic parameters, and the texture tactile roughness evaluation models are generated with the texture objective characteristic parameters and human subjective roughness clustering grade as input and output respectively, and the model parameters are obtained by training. The objective feature parameters of the texture to be evaluated are extracted and input to the model, and the human subjective roughness clustering grade is obtained. The invention simulates the cognitive habit of human beings, which is close to the real roughness evaluation process of human beings, and does not require the participation of a large number of experimenters, and has the characteristics of high efficiency, good stability of results and high accuracy.

Description

technical field [0001] The invention relates to an objective evaluation method of texture roughness based on human tactile perception characteristics, and belongs to the technical field of force-tactile interaction. Background technique [0002] Roughness is an objective attribute of an object, which is affected by objective parameters such as texture period, texture height, material hardness, and friction coefficient. The roughness of the material has an important impact on people's work and life. According to different applications, the requirements for roughness are very different. [0003] The evaluation of texture roughness exists in both industrial manufacturing and daily life. The evaluation methods of texture tactile roughness include subjective evaluation process and objective evaluation process. The subjective evaluation process is generally given through the evaluation of subjective perception experiments, that is, let the subjects touch the texture samples with...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide an objective evaluation method of texture roughness based on the characteristics of human tactile perception. The fusion of various objective factors has a comprehensive impact on human tactile perception, making the evaluation unreasonable.

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