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    • 31. 发明授权
    • Device for measuring torque of a rotary mechanism
    • 用于测量旋转机构扭矩的装置
    • US4697460A
    • 1987-10-06
    • US768949
    • 1985-08-23
    • Jun SugiyamaHirofumi KomatsubaraKeiichi ShimaokaMasaharu TakeuchiTakashi Takeuchi
    • Jun SugiyamaHirofumi KomatsubaraKeiichi ShimaokaMasaharu TakeuchiTakashi Takeuchi
    • G01L3/10G01L3/14G01L5/00G01B7/24
    • G01L3/1435Y10S73/02
    • A torque sensor for electrically detecting torque, such as the torque of an automobile engine, wherein a strain disk is provided in the path of torque transmission and the torque is magnetically detected in terms of the magnetostriction generated in the strain disk. The torque sensor comprises a magnetic rotating disk and a magnetic sensor disposed in the vicinity of and opposed to the strain disk. The magnetic sensor comprises a detection coil and an excitation coil oriented perpendicularly to each other with the excitation coil ordinarily being disposed outside of the detection coil. Supplying alternating current to the excitation coil causes an alternating field to be produced within the strain disk and the configuration of this alternating magnetic field is varied by the anisotropy of the strain caused within the strain disk by the transmitted torque. The variation in the configuration of the alternating magnetic field is noncontactingly detected by the detection coil, which outputs a corresponding electrical signal from which the torque can be determined with high accuracy.
    • 一种扭矩传感器,用于电动检测诸如汽车发动机的扭矩的转矩,其中在扭矩传递路径中设置应变盘,并且根据在应变盘中产生的磁致伸缩来磁力检测转矩。 转矩传感器包括设置在应变盘附近并与其相对的磁性转盘和磁传感器。 磁传感器包括检测线圈和垂直定向的励磁线圈,励磁线圈通常设置在检测线圈的外侧。 向励磁线圈提供交流电导致在应变盘内产生交变场,并且由交变转矩引起的应变盘内产生的应变的各向异性改变该交变磁场的结构。 交变磁场的结构变化由检测线圈非接触检测,检测线圈输出相应的电信号,从该信号可以高精度地确定转矩。