Method for controlling a hydraulic system

摘要

A hydraulic system control unit, a hydraulic system and a working machine for controlling a hydraulic system adapted to perform at least one hydraulic work function in a working machine are provided. The hydraulic system performs the hydraulic control function in accordance with an operation signal determined by a hydraulic system control unit. In a first step the control unit receives an operator control input associated to the work function. In a second step the control unit receives a load input indicative of a load associated to the work function. Moreover, in a third step the control unit determines the operation signal in response to the operator control input and the load input.

主权项

1. A method for controlling a load sensing hydraulic system adapted to perform at least one hydraulic work function in a working machine, wherein the load sensing hydraulic system comprises 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, and wherein the load sensing hydraulic system 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 an opening of the hydraulic valve to a degree which results in a reduced hydraulic flow.