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HIGH-PRECISION INDUCED CURRENT TYPE ABSOLUTE POSITION TRANSDUCER WITH DECREASED OFFSET AND METHOD FOR DETERMINING ABSOLUTE POSITION
HIGH-PRECISION INDUCED CURRENT TYPE ABSOLUTE POSITION TRANSDUCER WITH DECREASED OFFSET AND METHOD FOR DETERMINING ABSOLUTE POSITION
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机译:具有减小的偏移量的高精度感应电流型绝对位置传感器和绝对位置确定方法
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摘要
PROBLEM TO BE SOLVED: To decrease the DC offset components of signals outputted from an induced current type absolute position transducer.;SOLUTION: This transducer has a scale 202 and a read head 214 which are movable relative to each other along a measurement shaft 212, the read head 214 including at least one flux sensor (receiver winding groups 224, 226). The scale 202 has a plurality of closed loop coupling loops 204 extending along the measurement shaft 212. The plurality of closed loop coupling loops 204 include a plurality of first loop portions 206 and a plurality of second loop portion 208. The plurality of first loop portions 206 are arranged with intervals of a first wavelength λ1 along the measurement shaft 212 and the plurality of second loop portions 208 are arranged with intervals of a second wavelength λ2 different from the first wavelength.;COPYRIGHT: (C)2000,JPO
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