A method for determining the end position of a hydraulic cylinder of the main hydraulic system of a mobile machine, in particular of an industrial truck

摘要

The invention relates to a method for determining the end position of a hydraulic cylinder (2) of the main hydraulic system (1) of a mobile machine, in particular of an industrial truck, wherein said hydraulic cylinder (2) by means of a control path valve (8) is controlled with a hydraulic pump (3) and a container (6), for generating a movement of the hydraulic cylinder (2) by the control valve (8) into a control position (8b, 8c) is actuated and the hydraulic cylinder (2) of the hydraulic pump (3) via the in the control position (8b, 8c) actuated control valve (8) by the pressure medium is fed. In the case of the process according to the invention, the determination of the end position of the hydraulic cylinder (2) in the case of the control position (8b, 8c) by the actuated control valve (8) in a first step, whether the the hydraulic cylinder (2) is made available from the hydraulic energy is too high for the movement to be of the hydraulic cylinder (2), and is held in a subsequent second step of the hydraulic cylinder (2) is made available from the reduced pressure medium flow rate. During the reduction of the hydraulic cylinder (2) to the available pressure medium flow is determined whether the the the hydraulic cylinder (2) is made available from the hydraulic power continuously is too high for the movement to be of the hydraulic cylinder (2) and when reaching a lower limit value of the the hydraulic cylinder (2) to the available pressure medium flow, the end position of the hydraulic cylinder (2) is determined.