Patent ID: 9680348
Date: 2017-06-13
CPC Classifications: G01D,H02K

Claim:
1. A position sensor, comprising: a primary gear having a first number of teeth that is mounted to an input shaft; a secondary gear having a second number of teeth that is meshed with the primary gear, wherein the second number of teeth is different from the first number of teeth; a primary angular position sensor configured to measure the angular position of the primary gear within one rotation; a secondary angular position sensor configured to measure the angular position of said secondary gear within one rotation; and a control module configured to determine an angular position of the input shaft over multiple rotations using the measured angular positions of the primary and secondary gears and a reference value for each respective angle sensor, wherein a maximum number of rotations of said input shaft (N), the number of teeth on the primary gear (PT), and the number of teeth on the secondary gear (ST) are configured such that N≦LCM(PT, ST)/PT, where LCM( ) provides the lowest common multiple.