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    • 10. 发明授权
    • Assembly for measuring movement of and a torque applied to a shaft
    • 用于测量施加到轴的运动和扭矩的组件
    • US07024946B2
    • 2006-04-11
    • US10763499
    • 2004-01-23
    • Thomas Wolfgang NehlThomas Hubert Van SteenkisteJohn R. SmithBrian K FullerAvoki M. OmekandaDonald T. MorelliJoseph V. Mantese
    • Thomas Wolfgang NehlThomas Hubert Van SteenkisteJohn R. SmithBrian K FullerAvoki M. OmekandaDonald T. MorelliJoseph V. Mantese
    • G01L3/10
    • G01L3/102G01L3/103
    • The subject invention provides an assembly for measuring movement of and a torque applied to a shaft extending between first and second ends and being hollow, specifically for measuring rotation and twisting of the shaft. A permanent magnet is disposed within the shaft for producing a parallel magnetic field emanating radially from the shaft. A sensor mechanism is positioned adjacent the shaft to detect the magnetic flux produced in response to the shaft being moved. The sensor mechanism includes a magnetostrictive (MR) material disposed annularly about the shaft and extends between first and second edges. A flux collector extends beyond the first and second edges of the magnetostrictive material to direct the magnetic flux through a Hall sensor to detect an axial component of the magnetic flux in response to twisting. A positional ring extends annularly around and spaced from the shaft and a positional sensor is disposed between the positional ring and the shaft for measuring a radial component of the magnetic flux in response to rotating.
    • 本发明提供了一种用于测量施加到在第一和第二端之间延伸并且是中空的轴的转矩和扭矩的组件,具体地用于测量轴的旋转和扭转。 永磁体设置在轴内,用于产生从轴径向发出的平行磁场。 传感器机构定位在轴附近,以检测响应于轴被移动产生的磁通量。 传感器机构包括围绕轴设置成环状并在第一和第二边缘之间延伸的磁致伸缩(MR)材料。 磁通收集器延伸超出磁致伸缩材料的第一和第二边缘,以引导磁通量通过霍尔传感器,以响应于扭转来检测磁通量的轴向分量。 位置环围绕轴线环绕并且间隔开,并且位置传感器设置在位置环和轴之间,用于响应于旋转来测量磁通量的径向分量。