Invention Grant
- Patent Title: Magnetostrictive torque sensor and electric steering system
- Patent Title (中): 磁致伸缩转矩传感器和电动转向系统
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Application No.: US12324024Application Date: 2008-11-26
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Publication No.: US07938026B2Publication Date: 2011-05-10
- Inventor: Yoshihiro Oniwa , Takashi Miyoshi , Koichi Fujita , Atsuhiko Yoneda , Yasuo Shimizu
- Applicant: Yoshihiro Oniwa , Takashi Miyoshi , Koichi Fujita , Atsuhiko Yoneda , Yasuo Shimizu
- Applicant Address: JP Tokyo
- Assignee: Honda Motor Co., Ltd.
- Current Assignee: Honda Motor Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Arent Fox LLP
- Priority: JP2007-308817 20071129
- Main IPC: G01L3/02
- IPC: G01L3/02

Abstract:
A magnetostrictive torque sensor comprising: a magnetostrictive film provided on a ferromagnetic shaft; a bias magnetization device which applies a bias magnetic field to the shaft to magnetize the shaft; and a detection device which detects a change in magnetism of the magnetostrictive film, wherein: a torque acting on the shaft calculated based on the detection results of the detection device; and the bias magnetization device applies a bias magnetic field to the shaft at a predetermined timing.
Public/Granted literature
- US20090314573A1 Magnetostrictive Torque Sensor and Electric Steering System Public/Granted day:2009-12-24
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