EP 0662697 B1 19980408 - Method for controlling a bistable electromagnetic actuator and device to carry out such method
Title (en)
Method for controlling a bistable electromagnetic actuator and device to carry out such method
Title (de)
Verfahren zur Steuerung eines bistabilen elektromagnetischen Stellgliedes und Vorrichtung zur Durchführung dieses Verfahrens
Title (fr)
Procédé de commande d'un actionneur électromagnétique bistable et dispositif pour sa mise en oeuvre
Publication
Application
Priority
FR 9400103 A 19940107
Abstract (en)
[origin: EP0662697A1] The procedure enables control of an electromagnetic actuator (1) having two active stable positions and a rest position. The actuator includes a mobile armature (3) linked to the element to be moved, for example an internal combustion engine valve. The armature is arranged in the air gap (e) between two identical electromagnets (11,12). It is held in this rest position by the balanced forces of two identical springs (31,32). Switching is achieved by activating the second electromagnet a predetermined time interval (delta-T) after the cutting of current to the first electromagnet, and vice versa. The excitation of the second electromagnet may be advanced w.r.t. this time (delta-T), with the timing being adjusted for optimum effect according to the speed of operation.
IPC 1-7
IPC 8 full level
CPC (source: EP)
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
EP 0662697 A1 19950712; EP 0662697 B1 19980408; DE 69409485 D1 19980514; DE 69409485 T2 19980917; FR 2714998 A1 19950713; FR 2714998 B1 19960209
DOCDB simple family (application)
EP 94402896 A 19941215; DE 69409485 T 19941215; FR 9400103 A 19940107