Method for controlling a hydraulic system

A method for controlling a hydraulic system adapted to perform at least one hydraulic work function in a working machine, wherein the hydraulic system performs the hydraulic control function in accordance with an operation signal determined by a hydraulic system control unit, comprising:

• receiving via the control unit an operator control input associated to the work function,
• receiving via the control unit a load input indicative of a load associated to the work function,
• determining via the control unit the operation signal in response to the operator control input and the load input, and
• determining a relationship between the load input and the operation signal so that an increased load input value results in a reduced operation signal value and thus in a reduced hydraulic flow,
• wherein a relationship between the load input and the operation signal is one of linear and non-linear over the total operating range of the operator control input.

A method for controlling a hydraulic system adapted to perform at least one hydraulic work function in a working machine, wherein the hydraulic system comprises a moveable implement which is hydraulically operated by means of at least one hydraulic cylinder and connected to a body of the working machine by a load-arm unit, and wherein the at least one hydraulic cylinder performs the hydraulic work function in accordance with an operation signal determined by a hydraulic system control unit, comprising:

• receiving via the control unit an operator control input associated to the implement,
• receiving via the control unit a load input indicative of a load associated to the implement,
• determining via the control unit the operation signal in response to the operator control input and the load input, and
• determining a relationship between the load input and the operation signal so that an increased load input value results in a reduced operation signal value and thus in a reduce hydraulic flow, wherein a relationship between the load input and the operation signal is linear in at least a first interval of the load input value and non-linear in a second interval of the load input value for a particular value of the operator control input.

A working machine comprising a load sensing hydraulic system adapted to perform at least one hydraulic work function in the working machine, the load sensing hydraulic valve comprising a hydraulic valve, a relationship between an opening of the hydraulic valve and a hydraulic flow in the load sensing hydraulic system being independent of a load sensed by the load sensing hydraulic system, the working machine having a hydraulic system control unit adapted to control the load sensing hydraulic system, wherein the load sensing hydraulic system performs the hydraulic work function in accordance with an operation signal determined by a hydraulic system control unit, the hydraulic control unit controlling the load sensing hydraulic system by a method comprising:

• receiving via the control unit an operator control input associated to the implement,
• receiving via the control unit a load input indicative of a load associated to the implement,
• determining via the control unit the operation signal in response to the operator control input and the load input, and
• determining a relationship between the load input and the operation signal so that an increased load input value results in a reduced operation signal value and thus in an opening of the hydraulic valve to a degree which results in a reduced hydraulic flow.