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Portable system and method for measuring friction coefficient

A friction coefficient, testing system technology, used in measuring devices, instruments, mechanical devices, etc.

Inactive Publication Date: 2009-09-09
戴振东 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned friction coefficient test methods are mostly fixed equipment, and the movement between the friction pair and the surface to be tested is relatively fixed. There are problems such as clamping and testing for large workpieces, complex surfaces, and biological surfaces.

Method used

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  • Portable system and method for measuring friction coefficient
  • Portable system and method for measuring friction coefficient

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Embodiment Construction

[0026] The core of the determination of the coefficient of friction between surfaces is to measure the tangential force between surfaces under certain normal force, relative speed, surface contact form and material pairing. For this reason, the test method proposed by the present invention includes the following main links: (1) using a two-dimensional force sensor to simultaneously measure the normal force and friction force of the test system probe relative to the test object in motion. (2) The relative movement between the surfaces is provided by the movement of the experimenter's arm, and the speed is displayed in the speed detection link of the testing machine, which is used for the tester to adjust the movement speed in the next test. (3) The normal force between the surfaces is provided by the experimenter's arm, and the applied normal force is displayed in real time for the experimenter to adjust the applied force in time. (4) In order to ensure that the applied normal ...

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Abstract

The invention relates to a portable system and a method for measuring friction coefficient, belonging to the technical field of the measurement of the friction coefficient. The method comprises the following steps: adopting a force sensor to synchronously measure a normal force and a friction force of a friction measuring head passing a measuring surface and displaying the normal force and the friction force in real time; coating septum materials on a front section and a rear section a distance away from the measured surface, dividing the measured surface into a first septum material section, a measuring surface section which is not coated by septum material and is to be measured and a second septum material section along a motion trail direction of the friction measuring head, and causing the obvious change of the friction force and the normal force because the obvious difference of height differences or materials is formed on the measured surface; and calculating speed under the condition that the speed is unchangeable on the distance by considering the continuity of motion speed and the short distance of the measured surface. The method can be used for measuring the friction coefficient of large-scale workpieces, irregular surfaces and biological surfaces and can realize the portability of equipment.

Description

technical field [0001] The invention relates to a method for testing the coefficient of friction, in particular to a portable method and system for testing the coefficient of friction. technical background [0002] The coefficient of friction is an important index to evaluate the interaction between surfaces. This index has an important impact on the performance and even safety of many mechanical equipment, such as the friction between the car wheel and the ground on the stability of the car movement, the brakes of cars and trains The coefficient of friction between the disc and the brake pads affects the safety of the vehicle. In daily life, the impact of friction is also very important. For example, if the coefficient of friction between the insole and the shoe, or between the insole and the sock is improper, the insole will often slip out; insufficient friction between the floor and the sole will cause pedestrians to fall and cause physical injury. . [0003] Classical ...

Claims

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Application Information

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IPC IPC(8): G01N19/02
Inventor 戴振东李宏凯樊鸣鸣弓娟琴
Owner 戴振东
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