公开(公告)号：US20130312539A1

公开(公告)日：2013-11-28

申请号：US13897827

申请日：2013-05-20

Applicant: DENSO CORPORATION

Inventor： Osamu SHIMOMURA ,  Yoshiki TAKAHASHI ,  Kenji TAKEDA ,  Shigetoshi FUKAYA

IPC: G01L3/10

CPC classification number: G01L3/101 ,  G01L3/104

Abstract: A torque sensor includes: a torsion bar; a multi-pole magnet; a pair of yokes on an outside of the multi-pole magnet in a radial direction and providing a magnetic circuit in a magnetic field generated by the multi-pole magnet; and a pair of magnetic sensors arranged along a circumferential direction. Each magnetic sensor includes a magnetism sensing part for detecting a magnetic flux density generated in the magnetic circuit, and outputs a detection signal to an external computing device. The magnetic sensors output the detection signals to the external computing device such that the computing device calculates a sum of outputs or a difference of outputs of the magnetic sensors so as to cancel a variation of the outputs produced by a magnetic flux generated from the multi-pole magnet and directly reaching the magnetism sensing parts.

Abstract translation: 扭矩传感器包括：扭杆; 多极磁铁 在多极磁铁的外侧沿径向的一对磁轭，并在由多极磁铁产生的磁场中提供磁路; 以及沿圆周方向布置的一对磁性传感器。 每个磁传感器包括用于检测在磁路中产生的磁通密度的磁感测部分，并将检测信号输出到外部计算装置。 磁传感器将检测信号输出到外部计算装置，使得计算装置计算出磁传感器的输出和输出的差值之和，以便消除由多通道产生的磁通产生的输出的变化， 直到磁感应部件。