| 摘要 |
PROBLEM TO BE SOLVED: To eliminate magnetic unevenness, residual strain and the like to enhance measuring precision for a magnetic field, and to widen an applicable range of the magnetization type torque sensor, in a magnetostrictive ring of the bidirectional magnetization type torque sensor. SOLUTION: This manufacturing method for the magnetization type torque sensor of the present invention includes a process for preparing the first magnetostrictive ring 10 to be magnetized circumferential-directionally, a process for preparing the second magnetostrictive ring 12 that is a separate body from the first magnetostrictive ring to be magnetized circumferential-directionally, and a process for making the magnetized first and second magnetostrictive rings closely near on a shaft member 20 under the condition where respective magnetization vectors thereof are made to be reverse-directional each other. The first and second magnetostrictive rings are magnetized separately under the condition where the stress substantially same to that when attached onto the shaft member act thereon, in the processes for magnetizing the first and second magnetostrictive rings. COPYRIGHT: (C)2006,JPO&NCIPI
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