| 摘要 |
The present disclosure provides a device for sensing a torque applied through a shaft ( 18 ). The device includes a shaft ( 18 ) and a bearing ( 40 ) attached to the shaft ( 18 ). The bearing ( 40 ) includes an inner race ( 44 ), an outer race ( 42 ) and a plurality of rolling elements ( 46 ). A magnetoelastic ring ( 24 ) is press-fit onto the inner race ( 44 ). An eddy current or a magnetic field sensor ( 30 ) is placed in close proximity to the magnetoelastic ring ( 24 ). In the case of an eddy current sensor ( 30 ), the magnetoelastic ring ( 24 ) is not magnetized. In the case of a magnetic field sensor ( 30 ), the magnetoelastic ring ( 24 ) is magnetically circularly polarized. In either case, the chosen sensor ( 30 ) senses the induced changes of the magnetoelastic ring ( 24 ) characteristics and its associated electronics provides a measure of the applied torque.
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