Hydraulic pump service life test bench

Abstract

The invention discloses a hydraulic pump service life test bench, and belongs to the technical field of hydraulic system fault prediction, which is mainly used for fault diagnosis and predication of guided missile weaponry hydraulic systems. The hydraulic pump service life test bench includes a drive system, a pressure adjustment system, a control system, a signal acquisition and display system and a cooling system. A vibration signal, a pressure signal, a flow signal, and a temperature signal of a full service life period of the hydraulic pump are monitored, and the information is stored in an industrial personal computer through a data acquisition card and is used for fault prediction. The hydraulic pump service life test bench can acquire degradation information of the hydraulic pump in all round, can achieve an acceleration degradation test in the overpressure and overspeed condition and an inconstant acceleration degradation test at a constant pressure, can extract full accurate feature information and improve the test efficiency, can effectively acquire all the service life data of the hydraulic pump, and can lay the foundation for later fault prediction technique development.

Description

technical field [0001] The invention relates to signal monitoring and acquisition technology in the technical field of failure prediction of typical hydraulic pump equipment, in particular to a failure prediction technology based on hydraulic pump life data. Background technique [0002] With the use of complex and expensive systems, the human demand for accurate fault diagnosis and real-time prediction technology is increasing day by day, and the same is true for electronic, mechanical and hydraulic equipment. In order to improve the reliability of equipment and meet the new and revolutionary changes in logistics support, it is urgent to carry out more professional and advanced fault prediction technology research. [0003] Hydraulic equipment is widely used in aviation, aerospace, weapons, ships, construction machinery and other important fields. With the development of hydraulic equipment in the direction of high speed, high power and high precision, its system scale is ...

AI Technical Summary

Problems solved by technology

In addition, in the process of hydraulic pump failure degradation, the vibration signals, pressure signals and flow signals corresponding to different stages will have different reflections. Research based on single vibration signal data can no longer meet the needs of modern equipment for accurate fault prediction. Therefore, it is necessary to comprehensively collect various information of the fault degradation process, and then use technologies such as information fusion to analyze and process the collected data to extract more comprehensive and accurate fault characteristics to improve the accuracy of fault prediction.

Images