Method of identifying the impact of an armature onto an electrom

Details Method of identifying the impact of an armature onto an electrom Method of identifying the impact of an armature onto an electrom

1996-08-22

1998-01-13

Hecker, Stuart N.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

32420716, 32420724, 335255, G05F 140, G01B 714

Patent

active

057083550

ABSTRACT:
A method of controlling an electromagnetic actuator having at least one electromagnet and an armature that can be moved by generated magnetic forces in a direction counter to the force of a restoring spring associated with the electromagnet, with the armature acting on a control element. The supply of current to the electromagnet in order to initiate the armature movement is effected by a linear regulator that regulates the coil current to a constant value, via a control member, prior to the anticipated impact of the armature on the pole face of the electromagnet. An identifying signal for armature impact is derived from changes in the control variable of the regulator (control current or control voltage) when the armature impacts during the constant-current phase.

REFERENCES:
patent: 5424637 (1995-06-01), Oudyn et al.
patent: 5481187 (1996-01-01), Marcott et al.
patent: 5548204 (1996-08-01), Armstrong, II et al.
patent: 5600234 (1997-02-01), Hastings et al.

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