US 12,259,291 B2
Method and device for determining an amplitude of a pump-induced fluid pressure fluctuation of a fluid
Thomas Grünbeck, Munich (DE)
Assigned to MAN Truck &Bus SE, Munich (DE)
Appl. No. 17/615,804
Filed by MAN Truck & Bus SE, Munich (DE)
PCT Filed May 26, 2020, PCT No. PCT/EP2020/064554
§ 371(c)(1), (2) Date Dec. 1, 2021,
PCT Pub. No. WO2020/244965, PCT Pub. Date Dec. 10, 2020.
Claims priority of application No. 10 2019 003 920.3 (DE), filed on Jun. 1, 2019.
Prior Publication US 2022/0326106 A1, Oct. 13, 2022
Int. Cl. G01L 23/26 (2006.01)
CPC G01L 23/26 (2013.01) 24 Claims
OG exemplary drawing
 
1. A method for determining an amplitude A of a pump-induced fluid pressure fluctuation of a fluid that is regulated by means of a pump to a target fluid pressure psoll, comprising the steps:
providing a pressure signal of the fluid that comprises multiple pressure signal values in a predetermined time interval;
determining the amplitude A of the pump-induced fluid pressure fluctuation on the basis of the provided pressure signal;
checking whether the provided pressure signal satisfies a predetermined plausibility criterion; and
outputting the determined amplitude A if the provided pressure signal satisfies the predetermined plausibility criterion and rejecting the determined amplitude A if the provided pressure signal does not satisfy the predetermined plausibility criterion.