| 摘要 |
A torque sensor having a simple structure and free from a torque detection error.The torque sensor comprises an elastic member for connecting a first shaft to a second shaft and generating torsion displacement between the first shaft and the second shaft according to torque between the first shaft and the second shaft, a ring-shaped movable electrode attached to the shafts so that it displaces in an axial direction according to a relative torsion angle between the first shaft and the second shaft, first and second fixed electrodes installed at locations where they do not turn together with the shafts, and detecting means for detecting capacitance between each of the first and second fixed electrodes and the movable electrode.
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