US 12,467,234 B2
Electrical motor control for high performance hydraulic systems
Masoud Varshosaz, Sävedalen (SE)
Assigned to HUSQVARNA AB, Huskvarna (SE)
Appl. No. 18/280,095
Filed by HUSQVARNA AB, Huskvarna (SE)
PCT Filed Feb. 28, 2022, PCT No. PCT/SE2022/050203
§ 371(c)(1), (2) Date Sep. 1, 2023,
PCT Pub. No. WO2022/186753, PCT Pub. Date Sep. 9, 2022.
Claims priority of application No. 2150252-1 (SE), filed on Mar. 4, 2021.
Prior Publication US 2024/0151005 A1, May 9, 2024
Int. Cl. E02F 9/22 (2006.01); E02F 9/20 (2006.01); F04B 17/03 (2006.01); F04B 49/20 (2006.01)
CPC E02F 9/2246 (2013.01) [E02F 9/207 (2013.01); E02F 9/2221 (2013.01); F04B 17/03 (2013.01); F04B 49/20 (2013.01); F04B 2203/0207 (2013.01); F15B 2211/605 (2013.01); F15B 2211/633 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A control unit for controlling a hydraulic system on a construction machine, wherein the hydraulic system comprises a hydraulic pump arrangement with an electric drive motor configured to drive a hydraulic pump at a controllable drive torque and/or controllable drive speed,
wherein the control unit is arranged to obtain a load pressure of at least one actuator in the hydraulic system, to map the obtained load pressure to a target drive torque or a target drive speed based on a mapping between the load pressure and the target drive torque or the target drive speed, and to control the electric drive motor to generate the target drive torque or the target drive speed, and
wherein the control unit is arranged to detect a type and/or identification of the hydraulic pump and to configure the mapping between the load pressure and the target drive torque or the target drive speed based on the pump type and/or identification.