Patent ID: 8773227
Filing Date: 2014-07-08
Classification: B82Y,H01F,H01J,H02K,Y10T

Abstract:
1. A method for fabricating an electromagnetic actuator, comprising: providing a plurality of permanent magnets each having a nominal magnetization value which is subjected to tolerance; providing a first frame part having an electric coil; providing an electrical supply for driving the electric coil; providing a second frame part having a plurality of predefined receiving positions for receiving the plurality of permanent magnets; arranging the plurality of permanent magnets at the plurality of receiving positions for obtaining a magnetic arrangement having an alternating pole pattern in a first direction; coupling the first and second frame part; wherein the first and second frame part are arranged to allow relative movement between them along the first direction as a result of driving the electric coil; characterized by computing a correlation between an allocation of each of the plurality of permanent magnets to the plurality of receiving positions and the magnetic field at a first predefined interference point; optimizing the allocation with respect to a predetermined maximum value of the magnetic field at the first interference point using the correlation; arranging each permanent magnet to a receiving positions using the optimized allocation.