Hydraulic device and method for regulating a hydraulic device

A hydraulic device for supplying a plurality of work units, comprising

• a controller,
• at least one of a closed-loop valve control or an open-loop valve control, and
• a central drive,
• wherein there is associated with at least one of the work units at least one closed-loop control valve having a control valve geometry,
• wherein pressure sensors are provided which are configured to detect for each closed-loop control valve at least one pressure upstream and downstream of the closed-loop control valve, a load pressure of the work units and a system pressure,
• wherein the at least one of the at least one of the closed-loop valve control or the open-loop valve control has knowledge of the control valve geometry of the closed-loop control valves and is configured to derive at least one actual value of volumetric flow for each closed-loop control valve from a relationship between the control valve geometry and at least one pressure difference that results from a pressure detected upstream and a pressure detected downstream of the closed-loop control valves, and
• wherein the controller is configured to derive, from a setpoint of volumetric flow of the at least one of the work units and from the at least one actual value of volumetric flow of the at least one closed-loop control valve, at least one setpoint pre-control for the central drive, such that the system pressure corresponds at least to a maximum load pressure of the work units, wherein the closed-loop control valves can be used to set at least one of standardized operation commands, standardized flow rates, or standardized volumetric flows, of the at least one of the work units independently of the system pressure and the load pressure of the at least one of the work units.