Patent ID: 6382034
Filing Date: 2002-05-07
Classification: G01L

Abstract:
A sensor module comprising a part of a torque sensing unit which comprises a first shaft and a second shaft rotatably arranged in a coaxial manner to oppose each other, an elastic member for allowing a rotational displacement in response to a torque between said first shaft and said second shaft, a first magnetic element of a plurality of magnetic elements rotated in a same phase as said first shaft and other magnetic elements of the plurality of magnetic elements rotated in a same phase as said second shaft, and coils for sensing reluctances which are changed in compliance with rotational phase differences between said first and said other magnetic elements, so as to sense the torque acting between said first shaft and said second shaft, wherein said first magnetic element rotated in the same phase as said first shaft and said other magnetic elements rotated in the same phase as said second shaft are temporarily fixed to have a predetermined rotational phase difference.