US 12,247,677 B2
Method of diagnosing a valve, diagnosis module, and valve
Markus Klaiber, Ingelfingen (DE); Holger Schwab, Ingelfingen (DE); and Florian Fischer, Ingelfingen (DE)
Assigned to BUERKERT WERKE GMBH & CO. KG, (DE)
Filed by Buerkert Werke Gmbh & Co. KG, Ingelfingen (DE)
Filed on Dec. 20, 2021, as Appl. No. 17/556,726.
Claims priority of application No. 10 2020 134 425.2 (DE), filed on Dec. 21, 2020.
Prior Publication US 2022/0196184 A1, Jun. 23, 2022
Int. Cl. F16K 37/00 (2006.01); F16K 31/06 (2006.01); G01M 7/02 (2006.01); G01M 7/04 (2006.01); G01M 7/06 (2006.01); G01N 3/36 (2006.01)
CPC F16K 37/0041 (2013.01) [F16K 31/06 (2013.01); G01M 7/022 (2013.01); G01M 7/04 (2013.01); G01M 7/06 (2013.01); G01N 3/36 (2013.01); G01N 2203/0048 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of diagnosing a valve having an electrodynamic actuator, which comprises a coil, a movable magnet arrangement for generating a magnetic field, and a movable control element which is coupled to the movably arranged magnet arrangement, the method comprising the following steps:
measuring at least one electrical variable of the electrodynamic actuator by means of a diagnosis module which is electrically inserted into an electric circuit of the coil of the electrodynamic actuator, and
evaluating the electrical variable with respect to a reference variable to determine at least one induction-dependent valve variable which is assigned to a motion profile of the electrodynamic actuator,
wherein the coil is stationary in the electrodynamic actuator and the magnet arrangement is moveable relative to the coil.