Global Patent Index - EP 1076908 A1

EP 1076908 A1 2001-02-21 - METHOD FOR DETECTING AN ARMATURE MOVEMENT IN AN ELECTROMAGNETIC ACTUATOR

Title (en)

METHOD FOR DETECTING AN ARMATURE MOVEMENT IN AN ELECTROMAGNETIC ACTUATOR

Title (de)

VERFAHREN ZUR ERFASSUNG DER ANKERBEWEGUNG AN EINEM ELEKTROMAGNETISCHEN AKTUATOR

Title (fr)

PROCEDE DE DETECTION DU DEPLACEMENT D'UN INDUIT VERS UN ACTIONNEUR ELECTROMAGNETIQUE

Publication

EP 1076908 A1 (DE)

Application

EP 00910709 A

Priority

  • DE 19909109 A
  • EP 0001546 W

Abstract (en)

[origin: DE19909109A1] The invention relates to a method for detecting a movement, notably for controlling the speed at which an armature arrives at an electromagnetic actuator. Said actuator comprises at least one electromagnet which has at least one pole face and is connected to a controllable current supply, and an armature which is connected to a control member to be actuated and when the electromagnet is supplied with a current can be moved against the force of a return spring from a first switching position in the direction of the pole face of the electromagnet into a second switching position assigned to said pole face. Via at least one direction sensor assigned to the electromagnet the alignment of a magnetic leakage field, which changes as the armature approaches, is detected and a control signal for the current supply is generated in accordance with the change in alignment.

IPC 1-7 (main, further and additional classification)

H01F 7/18; F01L 9/04

IPC 8 full level (invention and additional information)

F01L 9/04 (2006.01); G01D 5/14 (2006.01); H01F 7/18 (2006.01)

CPC (invention and additional information)

H01F 7/1844 (2013.01); F01L 9/04 (2013.01); G01D 5/145 (2013.01); H01F 2007/1894 (2013.01)

Citation (search report)

See references of WO 0052715A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19909109 A1 20000907; EP 1076908 A1 20010221; JP 2002538753 A 20021112; WO 0052715 A1 20000908

INPADOC legal status


2003-03-12 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020829

2001-02-21 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20001104

2001-02-21 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE