Receiver line spacing in inductive position encoder
Abstract:
An electronic position encoder includes a scale comprising a first pattern track of signal modulating elements (SME) periodically arranged at a wavelength λ1 and a second pattern track of SME periodically arranged at a wavelength λ2, a detector, and a signal processing configuration. The detector includes a field generating coil configuration, a first set of sensing elements configured to provide detector signals based on the first pattern track, and a second set of sensing elements configured to provide detector signals based on the second pattern track. The first set of sensing elements include a first spatial phase subset of sensing elements and a second spatial phase subset of sensing elements that are connected to the signal processing configuration via at least a first pair and a second pair of connection lines that include respective crossover segments that extend across or overlap the second pattern track. The respective crossover segments are positioned at locations spaced apart along a measuring axis direction by a distance N*λ2, where N is an integer.
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