Global Patent Index - EP 0973178 A2

EP 0973178 A2 2000-01-19 - Method for controlling the motion of an armature of an electromagnetic actuator

Title (en)

Method for controlling the motion of an armature of an electromagnetic actuator

Title (de)

Verfahren zur Bewegungssteuerung eines Ankers eines elektromagnetischen Aktuators

Title (fr)

Procédé de commande du mouvement d'une armature d'un vérin électromagnétique

Publication

EP 0973178 A2 (DE)

Application

EP 99112676 A

Priority

  • DE 19832196 A
  • DE 19855775 A
  • DE 19836297 A

Abstract (en)

Following pull-in there is a braking phase in which a voltage is applied to a coil (4a, 4b) up to impact of the armature (4d) upon it. Timing and cyclic course of the voltage applied, are controlled as a function of the desired position (20) of the armature over time.

Abstract (de)

Die Erfindung betrifft ein Verfahren zur Bewegungssteuerung eines Ankers (4d) eines elektromagnetischen Aktuators (4), insbesondere zur Betätigung eines Gaswechsel-Hubventiles (1) einer Brennkraftmaschine, wobei der Anker (4d) oszillierend zwischen zwei Elektromagnet-Spulen (4a, 4b) jeweils gegen die Kraft zumindest einer Rückstellfeder (2a, 2b) durch alternierende Bestromung der Elektromagnet-Spulen bewegt wird, und wobei mit einer Annäherung des Ankers an die zunächst bestromte Spule während des sogenannten Fangvorganges die an der den Anker einfangenden Spule anliegende elektrische Spannung reduziert wird. Erfindungsgemäß schließt sich an die Fangphase des Fangvorganges eine Bremsphase an, in welcher bis zum Auftreffen des Ankers auf die Spule an diese getaktet elektrische Spannung angelegt wird, wobei die jeweiligen Schalt-Zeitpunkte und das Spannungs-Taktverhältnis von einem Regler anhand einer die Anker-Sollbewegung beschreibenden Solltrajektorie bestimmt werden. Bevorzugt wird getaktet entweder ein betragsmäßig konstanter positiver oder negativer Spannungswert oder der Spannungswert <IMAGE>Null" an die den Anker einfangende Spule angelegt. <IMAGE>

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

H01F 7/18

IPC 8 full level (invention and additional information)

F01L 9/04 (2006.01); H01F 7/18 (2006.01); H01F 7/123 (2006.01)

CPC (invention and additional information)

F01L 9/04 (2013.01); H01F 7/1805 (2013.01); F01L 2009/0486 (2013.01); H01F 7/123 (2013.01); H01F 2007/1894 (2013.01)

Designated contracting state (EPC)

DE FR GB IT SE

EPO simple patent family

EP 0973178 A2 20000119; EP 0973178 A3 20010321; EP 0973178 B1 20040929; JP 2000049012 A 20000218; US 6196172 B1 20010306

INPADOC legal status


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