Linear motor

Details Linear motor Linear motor

H - Electricity

02

K

H02K 41/02 (2006.01) H02P 25/06 (2006.01)

Patent

CA 2507407

The linear motor comprises a plurality of moving elements travelling along a track, and a stator armature provided substantially along the entire travelling track of moving elements. Each moving element travels separately and independently and comprises n permanent magnets disposed face to face with the stator armature. The magnets are arranged in alternating North and South sequence and have a pole pitch P. The stator armature comprises a plurality of individual coils arranged in a substantially contiguous sequence of individual polyphase-like sets. Each set comprises p overlapping coils having centres thereof spaced apart by a distance P/p, where p >= 2. The motor also comprises a servocontrol system for regulating and commutating the coils so as to produce a separate moving magneto-motive force (MMF) for each moving element. The servocontrol system includes plural processing means for resolving a position of each moving element and for computing a force vector to be applied to each moving element, thereby independently controlling each moving element.

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