发明名称 Magnetostrictive torque sensor and electric steering system
摘要 A magnetostrictive torque sensor (30) is provided with: a magnetostrictive film (31, 32) provided on a ferromagnetic shaft (5); a bias magnetization device (33, 34) which applies a bias magnetic field to the shaft (5) to magnetize the shaft (5); and a detection device (33, 34) which detects a change in magnetism of the magnetostrictive film (31, 32), wherein: a torque acting on the shaft (5) calculated based on the detection results of the detection device (33, 34); and the bias magnetization device (33, 34) applies a bias magnetic field to the shaft (5) at a predetermined timing.
申请公布号 EP2065691(B1) 申请公布日期 2011.12.21
申请号 EP20080020640 申请日期 2008.11.27
申请人 HONDA MOTOR CO., LTD. 发明人 ONIWA, YOSHIHIRO;MIYOSHI, TAKASHI;FUJITA, KOICHI;YONEDA, ATSUHIKO;SHIMIZU, YASUO
分类号 G01L3/10 主分类号 G01L3/10
代理机构 代理人
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