Patent ID: 7571604

Claim:
A working machine comprising: a source of pressurized fluid ( 1 ); a circuit of pressurized fluid ( 2 ) for driving the work implement; an electronically controlled hydraulic valve ( 5 ) arranged in the circuit of pressurized fluid ( 2 ) for controlling the function of the work implement; and a computer-based control unit ( 4 ), with machine-executable program statements thereon, that controls the hydraulic valve ( 5 ) based upon a signal from a control member ( 3 ) for transmitting a control command to the control unit ( 4 ), wherein the control unit ( 4 ) alternately controls the hydraulic valve ( 5 ), using a filter function to do so, in accordance with a smooth mode function or an abrupt mode function and wherein the filter function operates differently in the smooth mode and in the abrupt mode so that the opening time for opening the hydraulic valve ( 5 ) to a predetermined opening degree is changed when switching from one operating mode function to the other operating mode function, the ramp time for the hydraulic valve ( 5 ) to open to said predetermined degree being shorter in the abrupt mode than in the smooth mode.