Simulated touch evaluation method for surface quality of material

Abstract

The invention relates to a simulated touch evaluation method for the surface quality of a material. The simulated touch evaluation method is characterized by comprising the steps of constructing a simulation measurement platform; suspending a textile test sample to generate deformation; enabling a bionic skin to do controlled multidirectional and multipoint contact motion relative to the textile test sample; simulating contact friction conditions under different touch speeds and different average touch forces; and calculating a simulated touch sensing signal. The simulated touch evaluation method can be used for vividly simulating a process of obtaining surface quality information when a human body touches a fabric with a finger and vividly simulating a real contact friction process between the skin of the human body and the fabric; tested force and vibration signals are analyzed through a human body touch sensing mechanism, and a corresponding relation of the signals is found according to the sensitivity of different touch sensors to different stimulations, and therefore, quantification and evaluation of touch of the human body on the surface quality of the fabric are realized.

Description

technical field [0001] The invention relates to a method for simulating and evaluating the surface tactile texture of a material, which belongs to the technical field of textile measurement, in particular to the field of characterization and evaluation of the surface tactile texture of textile fabrics. Background technique [0002] Tactility is an important factor for people to evaluate the texture of consumer products. Taking a car as an example, interiors such as seats, steering wheels, and dashboards are all made of different materials such as cloth, leather, and plastic, and their texture directly affects the value of the car itself. Due to the user's requirements for high-quality interior and comfort in the compartment, the improvement of interior texture is one of the most important issues in development. Therefore, the development of such consumer products requires an objective evaluation method of haptics. At the same time, similar tactility can be expressed in man...

AI Technical Summary

Problems solved by technology

Chinese patent (public patent No. CN102354368B, a pattern recognition system for fabric sensory performance evaluation), invented a pattern recognition system and method for fabric sensory performance evaluation, which can measure the performance of wrinkle recovery and drape, Although the complex low-stress deformation process experienced by the fabric when passing through the nozzle is consistent with the deformation process when the fabric is evaluated with the palm of the hand, it is still different from the interaction between the human skin and the surface of the fabric in direct contact, and cannot fully represent The human body’s touch to fabrics cannot distinguish nuances of touch, and the obtained indicators cannot solve consumers’ needs for texture

Chinese patent (published patent No. CN101725026A a kind of objective evaluation method of softness level of woven fabrics), with the help of the test results of the physical properties of woven fabrics, the specific value is calculated by the formula, and the objective evaluation of the softness level of woven fabrics is carried out according to the numerical values. Although the invention The softness is quantified, but it is completely separated from the human body experience, which cannot represent the consumer's tactile experience

Chinese patent (published patent No. CN101398356A a kind of fuzzy evaluation method of leather softness) uses the top extension height under different loads to evaluate the softness of leather, and it is graded. Under the same load, the larger the deformation, the higher the leather softness. The better, this method is also to eliminate the uncertainty of subjective evaluation, but in this way, the characteristics of the sensory system of the human body are ignored, and it is still unable to characterize the soft feeling of the human body to the object

Chinese patent (public patent No. CN102590077A, a dynamic measurement device for biological friction of skin textiles), invented a dynamic measurement device for biological friction of skin textiles, which can not only test the friction, pressure and torque in the process of contact sliding in real time, but also real Reflecting the multi-directional contact friction process between the skin and the fabric under different sliding speeds and different initial pressures, the device can only measure the force signal, but cannot measure the vibration signal during the contact process, and does not involve the tactile texture evaluation method

Chinese patent (public patent No. CN202885804U, an analog measurement platform for the texture tactile evaluation process), invented an analog measurement platform for the texture tactile evaluation process, which can simultaneously measure and analyze multi-directional friction under different movement speeds and movement modes , pressure changes, the invention provides a test device that can simulate the contact and friction process between skin and textured surfaces such as fabrics, but does not involve a specific analog tactile signal analysis method

Chinese patent (public patent No. CN102967290A, a simulation measurement method for texture tactile evaluation process), this invention can realistically simulate the contact and friction process between skin and fabric, and extract the characteristic physical quantity of texture stimulation, so as to realize the characterization of tactile texture, but it is not possible to evaluate

Although tactile information consists of multiple factors, they all measure only one of the factors that affect tactile sensation

In other words, there is no way to measure the subtle difference in feel

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