Method for stopping a hydraulic pump with adjustable rotating speed in a hydraulic system and hydraulic pump controller device

摘要

The present invention relates to a method and device (1) for triggering the stop of a hydraulic pump (2) with adjustable rotating speed in a hydraulic system pre-established at a set point pressure (P C ), the method comprising the steps of: comparing (A) the pressure of the fluid (p) of the system with the set point pressure (P c ) of the system and varying (B) the rotating speed of said pump to match the pressure of the system with the pre-established set point pressure; verifying (C) if the feeding frequency (f) of said pump drops below a predetermined stop feeding frequency (f STOP ) and if so stopping (D) the pump until the pressure of the system drops (E) below the set point pressure. The stop feeding frequency (f STOP ) of the pump is automatically determined by calculation means connected to the pump from the maximum pumping pressure (H MAX ) of the pump and the feeding frequency at maximum rotating speed (f MAX ), intrinsic to the pump.