Fretting and sliding composite frictional wear test system and operation method thereof

The invention relates to a fretting and sliding composite friction wear test system which comprises a supporting device, a pressure loading device, a three-dimensional force sensor, a fretting and sliding driving device, a precise clamping device, a measuring device, a friction pair unit, a data acquisition card and a computer control system. The computer control system is used for coordination, so that the abrasion performance conditions of the friction pairs under various different load sizes, friction force frequencies and vibration displacement amplitudes are outputted in real time. The test system provided by the invention can well simulate the actual situation that the actual motion modes of a plurality of friction pairs in human body and industrial application are micro-motion and sliding composite superposition, meanwhile, the test system can set a test load, a lubrication working condition, the sliding speed and speed of sliding friction and the fretting amplitude and frequency of fretting friction,