Real-time Measuring And Testing Technique For Reciprocating Friction & Wear Experiment Based On Virtual Instrument

As well known the shock absorber is a key part of auto & motorcycle that is easy to be failure. The guide bushing & piston rod is also easy to fail mostly in the shock absorber. Therefore it is very important practical and theoretical meaning to study friction & wear mechanism during this reciprocating movement. In this paper, a real-time measuring and testing system based on Virtual Instruments (VI) for reciprocating friction & wear experiment is proposed. The mathematical model of the test bed was given based on reciprocating characteristic. Again the hardware design and error analysis of real-time test system were shown as well. This real-time test system was completed through VI and the Graphic Programming Language -LabVIEW. It is a reliable system with friendly interfaces, which carries out the test data's real-time sampling, analysis and handling, instantaneous graph saving, graph reoccurrence and exporting function etc. It can give the real-time and right results of tribology experiment. It can meet the tribology test's real-time require because of good frequency characterization. In the test system, it is successful to use the Virtual Instrument technique in tribology experiment, which pioneered a novel method of measuring and testing technique of tribology.