Abstract:In order to reveal the friction and wear performance of the slipper pair of highpressure axial piston pump, a highprecision, highperformance the slipper pair friction tester with electronic control and a stable and reliable spindle speed was required. However, in the slipper pair test, it was very difficult to realize the precise control of the spindle speed and the tester displacement. And when the spindle speed of the tester increased from 3 000 r/min, the oil temperature of the tester rose sharply, which would have a great influence on the accuracy of the slipper pair performance test. Aiming at this problem, the electronic control system for the MCMS10 testing machine was studied, the control scheme of the electrical control system was analyzed, the hardware diagram of the electronic control system was designed, and the satisfactory PID algorithm was used to control the rotation speed and displacement of the testing machine’s main spindle. Finally, through the configuration software realtime monitoring and experiment, it was found that, when the satisfactory PID algorithm was applied to the MCMS10 test control system, not only the accuracy was very high, but 65 ℃ for the spindle speed around 3 200 r/min. This study could be a good reference the oil temperature was always kept at around for similar researches in the future.