EP 0947003 A2 19991006 - PIEZOELECTRIC OR ELECTROSTRICTIVE INERTIA DRIVE FOR DISPLACING OR POSITIONING IN PARTICULAR HEAVY OBJECTS
Title (en)
PIEZOELECTRIC OR ELECTROSTRICTIVE INERTIA DRIVE FOR DISPLACING OR POSITIONING IN PARTICULAR HEAVY OBJECTS
Title (de)
PIEZOELEKTRISCHER ODER ELEKTROSTRIKTIVER TRÄGHEITSANTRIEB ZUM VERSCHIEBEN ODER POSITIONIEREN VON INSBESONDERE SCHWEREN OBJEKTEN
Title (fr)
MECANISME D'ENTRAINEMENT PAR INERTIE, PIEZO-ELECTRIQUE OU ELECTROSTRICTIF POUR DEPLACER ET POSITIONNER DES OBJETS PARTICULIEREMENT LOURDS
Publication
Application
Priority
- DE 9702482 W 19971026
- DE 19644550 A 19961026
Abstract (en)
[origin: WO9819347A2] The object of the invention is to improve displacement and positioning inertia drives using linearly extending piezoelectric or electrostrictive actuators such that heavy objects which are clamped without play and with high static friction approaching the blocking force of the actuators can be moved by displacements in the cm range at a relatively fast displacement speed, highly uniformly and without hysteresis, and positioned in the nm range. To that end, the object is rigidly connected in the direction of extension or contraction of the actuator to the latter or to the clamping device in which a needle-like force-transmission element is secured on the actuator. The mass inertia of the object does not counteract the displacement when the length of the actuator changes in jerks as a result of being suitably stimulated electrically, such that the above advantages are attained. The possibility of displacing heavy objects in the cm range with high positioning accuracy opens up new areas of application for piezoelectric or electrostrictive displacement devices.
IPC 1-7
IPC 8 full level
H01L 41/09 (2006.01)
CPC (source: EP)
H02N 2/025 (2013.01); H02N 2/101 (2013.01)
Citation (search report)
See references of WO 9819347A2
Designated contracting state (EPC)
CH FR GB IT LI
DOCDB simple family (publication)
WO 9819347 A2 19980507; WO 9819347 A3 19980625; DE 19644550 C1 19980610; EP 0947003 A2 19991006
DOCDB simple family (application)
DE 9702482 W 19971026; DE 19644550 A 19961026; EP 97945790 A 19971026