Patent ID: 9038485
Filing Date: 2015-05-26
Classification: F16C,G01P

Abstract:
1. A torque sensor bearing arrangement for a shaft, comprising: first and second bearings, each having a respective inner ring and outer ring with rolling elements therebetween, the bearings located at first and second ends of the shaft; first and second sensing rings connected in proximity to the outer rings of each of the bearings, the sensing rings each include an inductive sensor; first and second marking rings connected to one of shaft or inner ring, spaced apart from and aligned with the respective first and second sensing rings, the marking rings each having a wavy surface with a plurality of projections with valleys therebetween facing the respective first or second sensing ring to form respective first and second sensors from the respective sensing ring—marking ring pairs, with one of the first and second sensors at each end of the shaft detecting a rotational angle position of the shaft based on the wavy surface proximity and each provide a signal; and a controller that receives the signals from each of the first and second sensors and calculates at least one of torque or an angular speed of the shaft based on signals from the first and second sensors, wherein each of the projections of the wavy surface of the marking ring has a different shape, and the inductive sensor detects a proximity of the projections from which the controller can determine an exact position.