Axial piston pump mechanical vibration transmission path and the rear shell sensitivity analysis

The mechanical vibration transfer path model of the axial piston pump was established for aiming at the aviation hydraulic vibration that it has been more intense with the development trend of high speed and high pressure. In this paper, firstly, based on the first-order trajectory sensitivity method to solve the time-domain sensitivity function curves, the system parameters that have influence on the vibration response of the pump were determined. Secondly, two sensitivity measure indexes were defined to quantitative analysis of the effect that various parameters on the rear shell vibration displacement. We hope that the work in this paper can have some benefit for controlling the aircraft hydraulic system machinery vibration coming from the pump, optimizing the structure of aviation hydraulic pump and promoting the development of domestic large aircraft, providing theoretical and technical basis.