A Method for Evaluating Dynamical Friction in Linear Ball Bearings

Sensors

Yusaku Fujii¹  Koichi Maru¹  Tao Jin¹  Preecha P. Yupapin² 

[1] Department of Electronic Engineering, Faculty of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan; E-Mail:;Advanced Research Center for Photonics, King Mongkut’s Institute of Technology Ladkrabang Chalongkrung Road, Ladkrabang, Bangkok 10520, Thailand; E-Mail:

关键词: linear ball bearings;    dynamic friction coefficient;    inertial force;    optical measurement;   

DOI  :  10.3390/s101110069

来源: mdpi

【 摘 要 】

A method is proposed for evaluating the dynamical friction of linear bearings, whose motion is not perfectly linear due to some play in its internal mechanism. In this method, the moving part of a linear bearing is made to move freely, and the force acting on the moving part is measured as the inertial force given by the product of its mass and the acceleration of its centre of gravity. To evaluate the acceleration of its centre of gravity, the acceleration of two different points on it is measured using a dual-axis optical interferometer.

【 授权许可】

CC BY   
© 2010 by the authors; licensee MDPI, Basel, Switzerland.