Method of detecting when a moving compoment attains a final position
AssigneeLucas Industries public limited company
InventorMichael Anthony Archer
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Abstract
A method of detecting when a moving component of an electromagnetically operable device attains a final position after de-energizing a winding of the device comprises allowing the energizing current to fall to zero and prior to the component reaching its final position, connecting a sensing circuit in parallel with the winding, the current flow in the sensing circuit increasing from the instant of connections and decreasing when the component reaches its final position, said sensing circuit detecting the change in current flow.
Claims5
A method of detecting when a moving component of an electromagnetically operable device attains a final position after de-energizing a winding forming part of a device characterized in that the energizing current in said winding is allowed to fall to zero, and prior to said component reaching its final position, a sensing circuit through which current can flow is connected in parallel with said winding, the current in said sensing circuit increasing from the instant of connecting said sensing circuit in parallel with said winding and decreasing when said component reaches its final position, and detecting when said component reaches its final position by detecting the change from increasing current to decreasing current.
Dependencies are inferred from the claim text.