Torque sensor
    61.
    发明授权
    Torque sensor 有权
    扭矩传感器

    公开(公告)号:US07343825B2

    公开(公告)日:2008-03-18

    申请号:US11041219

    申请日:2005-01-25

    IPC分类号: G01L3/02

    CPC分类号: G01L3/102 G01L3/105

    摘要: A magnetostriction-type torque sensor has a rotating shaft having magnetostrictive properties and first and second coils which each constitute three or more closed loops. For each coil, the closed loop is disposed in a concentric relationship (a concentric circle located on a plane perpendicular to the rotating shaft) with the rotating shaft. Further, the direction of magnetostrictive properties of the rotating shaft detected by the first coil is made different from the direction of magnetostrictive properties of the rotating shaft detected by the second coil.

    摘要翻译: 磁致伸缩型扭矩传感器具有具有磁致伸缩特性的旋转轴和分别构成三个或更多个闭环的第一和第二线圈。 对于每个线圈,闭环与旋转轴以同心的关系(位于与旋转轴垂直的平面上的同心圆)设置。 此外,使由第一线圈检测的旋转轴的磁致伸缩特性的方向与由第二线圈检测的旋转轴的磁致伸缩特性的方向不同。

    Motor control device
    67.
    发明授权
    Motor control device 失效
    电机控制装置

    公开(公告)号:US06404152B1

    公开(公告)日:2002-06-11

    申请号:US09463654

    申请日:2000-01-28

    IPC分类号: H02P602

    CPC分类号: H02P6/10 H02P6/00

    摘要: In order to reduce undesired sound caused by circular ring oscillation in the diametric direction of the stator by an electromagnetic force, electromagnetic force drift memory stores a drift information of the electromagnetic force causing the circular ring oscillation of the stator. This electromagnetic force drift information is read out according to the position information &thgr; and is supplied to a correction coefficient generating circuitry. Correction coefficient generating circuitry corrects the amplitude component of the activation current wave from by forming correction coefficient &bgr; (t) of the activation current so as to cancel the electromagnetic force harmonic component in the diametric direction which component is the component of the circular ring oscillation of the stator.

    摘要翻译: 电磁力漂移存储器为了通过电磁力减少定子的直径方向的圆环振动引起的不希望的声音,存储导致定子的圆环振荡的电磁力的漂移信息。 根据位置信息θ读出该电磁力漂移信息,并将其提供给校正系数生成电路。 校正系数产生电路通过形成激活电流的校正系数β(t)来校正激活电流波的振幅分量,以抵消直径方向上的电磁力谐波分量,该分量是圆环振荡的分量 定子。