Patent ID: 6417584
Filing Date: 2002-07-09
Classification: G01D,H02K,H02P

Abstract:
A magnet array for a linear motor comprising:a plurality of motor magnets having alternating polarities arranged in an array having first and second ends that are spaced apart from each other; a first additional motor magnet located outside of the array of motor magnets adjacent a first motor magnet of the plurality of motor magnets at the first end of the array of motor magnets, the first additional motor magnet having a magnetic polarity opposite a magnetic polarity of the first motor magnet; and a second additional motor magnet located outside of the array of motor magnets adjacent a second motor magnet of the plurality of motor magnets at the second end of the array of motor magnets, the second additional motor magnet having a magnetic polarity opposite a magnetic polarity of the second motor magnet, whereby the first and second additional motor magnets facilitate a substantially sinusoidal magnetic field in a span defined by the array of motor magnets.