Patent ID: 9157816
Filing Date: 2015-10-13
Classification: G01L

Abstract:
1. A torque sensing device comprising: a rotating flexible disc configured to rotate about an axis of rotation, the rotating disc in a path of torque transmission and exhibiting am angular deformation as a result of a torque applied to the rotating flexible disc; a first sensor positioned adjacent to the rotating flexible disc to sense instantaneous angular position of the rotating flexible disc at a first radial location; a second sensor positioned adjacent to the rotating flexible disc radially inboard of the first sensor to sense instantaneous angular position of the rotating flexible disc at a second radial location; a controller operably coupled to the first sensor and the second sensor, wherein the controller determines a relative phase shift between a first signal generated by the first sensor and a second signal generated by the second sensor to calculate an output proportional to the torque applied to the rotating flexible disc.