Winding and scale configuration for inductive position encoder

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11287286
APP PUB NO 20200300670A1
SERIAL NO

16898022

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Abstract

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A pitch compensated inductive position encoder includes a scale comprising first and second tracks including periodic patterns having a wavelength W, a detector, and signal processing. The second track pattern may be shifted along the measuring direction by a pattern offset STO relative to the first track pattern. In the detector, first-track and second-track field generating coil portions generate fields in first and second interior areas aligned with the first and second pattern tracks, respectively. First and second sensing coil configurations that are aligned with the first and second tracks, respectively, are offset relative to one another by STO+/−0.5*W along the measuring direction. In various embodiments, the first and second sensing coil configurations may have the same sequence of individual coil polarities if the generated field polarities are different, and may have inverted or opposite sequences if the generated field polarities are the same.

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Patent Owner(s)

Patent OwnerAddress
MITUTOYO CORPORATIONKAWASAKI-SHI KANAGAWA 213-8533

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cook, Ted Staton Kirkland, US 32 302

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