Brooks Kushman P.C.
Control unit and method for monitoring the function of an electromagnetic actuator
A magnetic core and an electric coil, wherein the magnetic core is configured to move by supplying current to the electric coil to allow electrical energy to be transformed into mechanical energy and an electromagnetic actuator operates a valve body to move, and a controller configured to measure a current flowing through the electric coil, select a temporal evaluation section of a course of the current, wherein the current changes from a current value at a beginning of the temporal section to a current value at an end of the section, wherein the evaluation section lasts for a duration period, form an evaluation product from at least the current value at the beginning of the section, the current value at the end of the section, and the duration period of the section, and detect an error function of the actuator by comparing the evaluation product with an evaluation product limit.
SCHAEFFLER TECHNOLOGIES AG & CO. KG
H H G F F
H01F H01F G01R F16K F16K
inventional additional inventional inventional inventional
Michael Weigang Piergiacomo
Elicker Wang Traversa