Hydraulic pressurizing medium supply assembly for a mobile work machine, and method

A method of operating a hydraulic pressurizing medium supply assembly, comprising:

• controlling a pilot valve by way of a first closed-loop control circuit and a second closed-loop control circuit,
• wherein the hydraulic pressurizing medium supply assembly includes:
• a hydro machine;
• an adjusting mechanism including (i) an actuating cylinder having a set piston configured to adjust a delivery volume of the hydro machine, and (ii) the pilot valve electrically actuatable in a proportional manner, wherein an inflow to and/or an outflow from a control chamber of the actuating cylinder that is limited by the set piston is configured for control via the pilot valve in order for an actuation of the set piston to be impinged with pressurizing medium;
• and
• an electronic control which, as input variables, has at least a nominal outlet pressure of the hydro machine and/or a nominal delivery volume or a nominal swivel angle of the hydro machine, and which, as an output variable, has a control variable for the pilot valve,
• wherein the electronic control has the first closed-loop control circuit for an actual outlet pressure of the hydro machine and/or for an actual delivery volume or an actual swivel angle of the hydro machine,
• wherein the electronic control, so as to underlie the first closed-loop control circuit, has the second closed-loop control circuit for a delivery-volume adjustment rate or a swivel-angle adjustment rate of the hydro machine,
• wherein the second closed-loop control circuit, as an input variable, having an actual delivery-volume adjustment rate or an actual swivel-angle adjustment rate of the hydro machine, and, as an output variable, having the control variable for the pilot valve, and
• wherein the second closed-loop control circuit is supplied a control value from the first closed-loop control circuit in the form of a nominal delivery-volume adjustment rate or a nominal swivel-angle adjustment rate.