US 12,140,164 B2
Electrohydraulic control device and adjustable hydraulic pump system
Fabian Kreutmayr, Aschheim (DE); Andreas Jell, Aschheim (DE); and Markus Imlauer, Aschheim (DE)
Assigned to HAWE Hydraulik SE, Aschheim (DE)
Filed by HAWE Hydraulik SE, Aschheim (DE)
Filed on Mar. 2, 2023, as Appl. No. 18/177,195.
Claims priority of application No. 10 2022 202 279.3 (DE), filed on Mar. 7, 2022.
Prior Publication US 2023/0279879 A1, Sep. 7, 2023
Int. Cl. F15B 11/16 (2006.01); F04B 1/295 (2020.01); F04B 1/324 (2020.01); F04B 49/00 (2006.01); F04B 49/06 (2006.01); F04B 49/08 (2006.01)
CPC F15B 11/165 (2013.01) [F04B 49/002 (2013.01); F04B 49/06 (2013.01); F04B 49/08 (2013.01); F04B 1/295 (2013.01); F04B 1/324 (2013.01); F15B 2211/20553 (2013.01); F15B 2211/6057 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An electrohydraulic control device for an adjustable hydraulic pump system, comprising:
a valve device;
an electronic control unit; and
at least one first fluid sensor,
wherein the valve device comprises a pressure inlet, a tank outlet and a first electromagnetically actuated valve, and an outlet pressure of the adjustable hydraulic pump system is applied to the pressure inlet of the valve device,
wherein the first fluid sensor detects an actual value of a fluid parameter of the adjustable hydraulic pump system and transmits the actual value of the fluid parameter to the electronic control unit,
wherein the electronic control unit comprises a computer-based modeling of an overall dynamic of the adjustable hydraulic pump system and actuates the first electromagnetically actuated valve based on the actual value of the fluid parameter and the computer-based modeling,
wherein the computer-based modeling of the overall dynamic of the adjustable hydraulic pump system comprises an artificial neural network which is fed with training data comprising measurement data and/or simulation data,
wherein the valve device further comprises a control outlet connected to an actuator of the adjustable hydraulic pump system, wherein a first hydraulic connection is formed between the pressure inlet and the control outlet, and a second hydraulic connection is formed between the control outlet and the tank outlet, and
wherein the valve device further comprises a second electromagnetically actuated valve, wherein the first electromagnetically actuated valve is disposed in the first hydraulic connection and the second electromagnetically actuated valve is disposed in the second hydraulic connection, wherein the electronic control unit actuates the second electromagnetically actuated valve based on the actual value of the fluid parameter and the computer-based modeling.