Research on condition monitoring failure in axial piston pumps

In this paper the condition monitoring and fault diagnosing of slipper looseness failure in swash plate axial piston pumps are investigated analytically and experimentally. The paper first describes mathematical models of loose slipper failure. Then normal power spectrums and fault power spectrums are experimentally descussed. Through contrast between theoretical models and experimental models we can approximately judge quantity of loose slippers. Finally, a corresponding criterion of slipper looseness fault diagnosing is discussed.