EP 2519387 A1 20121107 - ELECTROMECHANICAL ACTUATOR STRUCTURE
Title (en)
ELECTROMECHANICAL ACTUATOR STRUCTURE
Title (de)
ELEKTROMECHANISCHE AKTUATORSTRUKTUR
Title (fr)
STRUCTURE D'ACTIONNEUR ÉLECTROMÉCANIQUE
Publication
Application
Priority
IB 2009007915 W 20091231
Abstract (en)
[origin: WO2011080532A1] An electromechanical actuator (100) comprising a ferromagnetic unit or a stator (10) which consists of opposite first (11 ) and a second (12) ferromagnetic elements that comprises ferromagnetic portions (16') and magnetic elements (15) that form together a open magnetic circuit. The electromechanical actuator (100) comprises also an electromagnetic unit (20) that is relatively movable with respect to the ferromagnetic unit (10), which comprises a first (21 ) and a second (22) winding integral to each other and arranged, with respect to the ferromagnetic unit (10), such that the respective open magnetic circuit are closed on the first (11 ) and the second (12) ferromagnetic elements. In particular, the first (21 ) and the second windings (22) comprise each a plurality of serially arranged elementary windings (23), which starts from an initial elementary winding (23i) up to a final elementary winding (23f), in particular the elementary windings have an increasing number of loops. The windings (21/22) are oppositely arranged with respect to each other and are respectively run through by opposite currents lag and Ian in such a way that opposite repulsive forces are generated. In particular, the forces are such that an agonist force (Fag), which is generated on one of windings, for example (21), that is run through by current lag, opposes to an antagonist force (Fan), which is generated on the other winding (22), that is run through by current Ian, until a relative position of the electromagnetic unit (10) and of the ferromagnetic unit (20) is achieved in which the above described forces balance each other. The electromechanical actuator (100), comprises furthermore a means for independently controlling the intensity of the opposite currents lag and Ian that circulates within the first (21 ) and the second winding (22) in order to adjust the absolute value of the current intensity difference and therefore adjusting the relative position, where the forces balance each other.
IPC 8 full level
B25J 9/12 (2006.01)
CPC (source: EP)
B25J 9/12 (2013.01); H02K 41/0356 (2013.01)
Citation (search report)
See references of WO 2011080532A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
IB 2009007915 W 20091231; EP 09835904 A 20091231