On-Line Measurement and Record of the Rotation Variable in Tribological Test

A multivariable on-line measurer was developed in this paper. It can be used for measuring and recording continuously the instantaneous values of the rotating variables of samples such as angular velocity, position angle, revolution and friction distance etc in the tribological test under the directional and reversed direction. It shown clearly that the variation process and relations of the variants through the time-variable and also shown that the rotation situations of the samples. Some of the indirect informations such as the relative slip of friction pairs and the variations of friction force were also obtained in this test. This measurer has the advantages of multi-use, small dimentions and operation convenient.