EP 1922772 A1 20080521 - CIRCUIT AND METHOD FOR CONTROLLING A PIEZOELECTRIC OR ELECTROSTRICTIVE ACTUATOR
Title (en)
CIRCUIT AND METHOD FOR CONTROLLING A PIEZOELECTRIC OR ELECTROSTRICTIVE ACTUATOR
Title (de)
SCHALTUNG UND VERFAHREN ZUR ANSTEUERUNG EINES PIEZOELEKTRISCHEN ODER ELEKTROSTRIKTIVEN AKTORS
Title (fr)
CIRCUIT ET PROCEDE POUR COMMANDER UN ACTIONNEUR PIEZO-ELECTRIQUE OU ELECTROSTRICTIF
Publication
Application
Priority
- EP 2006065987 W 20060905
- DE 102005042107 A 20050905
Abstract (en)
[origin: WO2007028784A1] The invention relates to a circuit and/or a corresponding method for controlling a piezoelectric or electrostrictive actuator (P) having a series-connected driver stage (G) which provides a control signal which is used to drive the piezoelectric actuator (P). A reference capacitor (M), which is used to measure a charge (qP) of the actuator (P), is serially connected to the actuator (P). The reference capacitor (M) is used as a series capacitor in order to measure the actuator charge (q<SUB>A</SUB>(T) = q<SUB>P</SUB>(t)) of the piezoelectric actuator. The output variable is a voltage which is proportional to the actuator charge. Said voltage is guided to an A/D-converter and is processed further in a digital manner or guided directly to a analogue controller.
IPC 8 full level
H01L 41/04 (2006.01); H02N 2/06 (2006.01)
CPC (source: EP US)
H02N 2/062 (2013.01 - EP); H10N 30/802 (2023.02 - US)
Citation (search report)
See references of WO 2007028784A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DE 102005042107 A1 20070315; EP 1922772 A1 20080521; US 2008218027 A1 20080911; WO 2007028784 A1 20070315
DOCDB simple family (application)
DE 102005042107 A 20050905; EP 06793205 A 20060905; EP 2006065987 W 20060905; US 6533206 A 20060905