Method of controlling armature movements in an electromagnetic c

Details Method of controlling armature movements in an electromagnetic c Method of controlling armature movements in an electromagnetic c

1998-08-17

2000-06-27

Fleming, Fritz

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361210, H01H 900

Patent

active

060814136

ABSTRACT:
A method for controlling armature movement in an electromagnetic circuit includes the steps of providing two spaced, facing electromagnets and an armature movable between the two electromagnets along a motion path; alternatingly energizing the two electromagnets for causing a reciprocating motion of the armature; detecting the actual moments of passage of the armature during each motion from one electromagnet to the other at least at two consecutive locations along the motion path; comparing signals representing the actual moments of passage with signals representing desired moments of passage of the armature at the two locations; and dependent upon deviations determined in the signal-comparing step, controlling the moment of de-energizing the momentarily releasing electromagnet and controlling the moment of energizing the momentarily catching electromagnet.

REFERENCES:
patent: 4455543 (1984-06-01), Pischinger et al.
patent: 4544986 (1985-10-01), Buchl
patent: 5813653 (1998-09-01), Esch et al.
patent: 5818680 (1998-10-01), Schmitz et al.
patent: 5822167 (1998-10-01), Schmitz

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