Method and Device for Determining a Wear Condition in a Hydrostatic Pump
AssigneeMoog Inc.
InventorDirk BECHER
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Abstract
A method for determining a current wear (w) of a hydrostatic pump, particularly of a radial piston pump, with a variable-speed drive, where the pump is connected to a fluid passage, in which a fluid is pumped by the pump to create a current actual volume flow in the fluid passage. A current actual volume flow (Qact) is determined, by measuring the volume flow in the fluid passage at a predetermined drive-vector, a computed volume flow (Qcomp) is determined, by a first computational method, at the predetermined drive-vector, and the current wear (w) of the pump is determined, by a second computational method, which relates the current actual volume flow (Qact) to the computed volume flow (Qcomp).
Claims14
A method for determining a current wear (w) of a radial piston pump, with a variable-speed drive, where the pump is connected to a fluid passage, in which a fluid is pumped by the pump, the pump creating a current actual volume flow in the fluid passage, the method comprising:
- determining a current actual volume flow (Qact) by measuring the volume flow in the fluid passage at a predetermined drive-vector including a first pressure and a second pressure of the fluid, respectively;
- determining a computed volume flow (Qcomp) by a first computational method, at the predetermined drive-vector including the first pressure and the second pressure of the fluid, respectively;
- and
- determining the current wear (w) of the pump by a second computational method, which relates the current actual volume flow (Qact) to the computed volume flow (Qcomp).
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Dependencies are inferred from the claim text.