公开(公告)号：WO2019034317A1

公开(公告)日：2019-02-21

申请号：PCT/EP2018/067667

申请日：2018-06-29

Applicant: SUNFAB HYDRAULICS AB

Inventor： SUNDIN, Mats ,  WEISBJERG, Sigvard

IPC: F04B17/03 ,  F04B17/05 ,  F04B23/00 ,  F04B49/06 ,  F04B49/08 ,  F04B49/20

CPC classification number: F04B49/065 ,  F04B17/03 ,  F04B17/05 ,  F04B23/00 ,  F04B49/08 ,  F04B49/20 ,  F04B2203/0206 ,  F04B2203/0209 ,  F04B2203/021 ,  F04B2203/0211 ,  F04B2203/0601 ,  F04B2203/0602 ,  F04B2203/0605 ,  F04B2203/0606 ,  F04B2205/05 ,  F04B2205/06 ,  F04B2207/01 ,  F04B2207/03

Abstract: A control device (100) for a motor (210) for a hydraulic system (200) is provided. The control device comprises at least one first sensor (120, 130) for measuring a pump pressure of the hydraulic system and a load pressure of 5 the hydraulic system, and at least on second sensor (135) for measuring at least one operating condition of at least one of the motor and a pump (220) of the hydraulic system. The control unit further comprises a processing unit (110) configured to control an rpm setting for the motor. The processing unit may control the rpm based on a difference in pressure, Δp, between the 10 pump pressure and the load pressure measured by the at least one first sensor, a predetermined preferred difference, Δp_pref, in pressure between the pump pressure and the load pressure, and at least one of the at least one operating condition.