Global Patent Index - EP 1446843 A2

EP 1446843 A2 20040818 - DEVICE FOR CONTROLLING AN ELECTRONICALLY-MONITORED ULTRASONIC PIEZOELECTRIC ACTUATOR, AND METHOD FOR USING SAME

Title (en)

DEVICE FOR CONTROLLING AN ELECTRONICALLY-MONITORED ULTRASONIC PIEZOELECTRIC ACTUATOR, AND METHOD FOR USING SAME

Title (de)

ELEKTRONISCHE STEUERVORRICHTUNG FÜR EINEN PIEZOELEKTRISCHEN ULTRASCHALLAKTUATOR UND DEREN BETRIEBSVERFAHREN

Title (fr)

DISPOSITIF DE COMMANDE D'UN ACTUATEUR PIEZO-ELECTRIQUE ULTRASONORE PILOTE ELECTRONIQUEMENT, ET SON PROCEDE DE MISE EN OEUVRE

Publication

EP 1446843 A2 20040818 (FR)

Application

EP 02796864 A 20021122

Priority

  • FR 0204013 W 20021122
  • FR 0115125 A 20011122

Abstract (en)

[origin: FR2832563A1] A direct current convertor (C) steps up the voltage of a vehicle battery (B) to output terminals (B1,B2). Piezoelectric injection actuators (I) are selected in turn by switches (K) and placed in series with an inductor (L), the combined circuit being connected to the convertor terminals in alternating forward and reverse senses at high frequency by pairs of switches (P1,P2) and (P3,P4)

[origin: FR2832563A1] The invention concerns a device for controlling an ultrasonic piezoelectric actuator, electronically monitored from a computer controlling a continuous current voltage source. The invention is characterized in that it comprises a DC to DC converter, powered by the voltage source, delivering at least in output a direct current voltage (V<sb>s</sb>) between two end terminals (B<sb>1</sb>, B<sb>2</sb>) parallel to which is connected at least an arm, consisting of two alternately controllable series-connected bridge switches and whereof the midpoint is alternately connected to the two output terminals of the DC to DC converter by a load consisting of at least an actuator in series with a resonance inductor.

IPC 1-7

H01L 41/04

IPC 8 full level

F02D 41/20 (2006.01); F02M 47/00 (2006.01); F02M 51/00 (2006.01); F02M 51/06 (2006.01); H01L 41/04 (2006.01); H02N 2/00 (2006.01); H02N 2/06 (2006.01)

CPC (source: EP US)

F02D 41/2096 (2013.01 - EP US); H02N 2/065 (2013.01 - EP US); F02D 2041/2072 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

FR 2832563 A1 20030523; EP 1446843 A2 20040818; JP 2005525772 A 20050825; US 2005029905 A1 20050210; WO 03044874 A2 20030530; WO 03044874 A3 20040415

DOCDB simple family (application)

FR 0115125 A 20011122; EP 02796864 A 20021122; FR 0204013 W 20021122; JP 2003546413 A 20021122; US 49452904 A 20040909