公开(公告)号：US06922301B1

公开(公告)日：2005-07-26

申请号：US10263222

申请日：2002-10-02

Applicant: Larry Wittig ,  Stanislaw Dobosz ,  Upendra Ummethala

Inventor： Larry Wittig ,  Stanislaw Dobosz ,  Upendra Ummethala

IPC: G11B5/48 ,  G11B5/55 ,  G11B21/02

CPC classification number: G11B5/4833 ,  G11B5/5569

Abstract: A disk drive includes a head stack assembly having a storage disk, a data transducer, an actuator pivot center and a positioner. The positioner includes a magnet assembly, a primary coil array that generates a first rotational displacement of the data transducer, and a secondary coil array that generates a second rotational displacement of the data transducer. The absolute value of the ratio of the first rotational displacement to the second rotational displacement is at least approximately 1.5:1. The primary coil array generates a first vibration displacement that causes the data transducer to move off track, and the secondary coil array generates a second vibration displacement that is out of phase from the first vibration displacement. The absolute value of the sum of the first and second vibration displacements is less than the absolute value of the first vibration displacement. The disk drive can also include a control system that directs a first current to the primary coil array and a second current to the secondary coil array that is out of phase from the first current. The secondary coil array can include a proximal coil and a distal coil, with the proximal coil being positioned closer to the actuator pivot center than the distal coil. Further, only a portion of at least one of the coils is positioned directly between the magnet arrays. In another embodiment, the head stack assembly includes a latitudinal axis that divides the head stack assembly into a positioner region and a transducer region. The secondary coil array is positioned substantially within the positioner region of the head stack assembly. The positioner generates a primary force and a secondary force that combine to generate a constant net force in a direction along the longitudinal axis while the data transducer moves between the inner diameter and the outer diameter.

Abstract translation: 磁盘驱动器包括具有存储盘，数据传感器，致动器枢轴中心和定位器的磁头堆叠组件。 定位器包括磁体组件，产生数据换能器的第一旋转位移的初级线圈阵列和产生数据换能器的第二旋转位移的次级线圈阵列。 第一旋转位移与第二旋转位移的比率的绝对值为至少约1.5:1。 初级线圈阵列产生使数据换能器离开轨道的第一振动位移，并且次级线圈阵列产生与第一振动位移异相的第二振动位移。 第一和第二振动位移之和的绝对值小于第一振动位移的绝对值。 磁盘驱动器还可以包括将第一电流引导到初级线圈阵列的控制系统和与第一电流异相的次级线圈阵列的第二电流。 次级线圈阵列可以包括近端线圈和远端线圈，其中近端线圈被定位成比远端线圈更靠近致动器枢转中心。 此外，只有至少一个线圈的一部分直接位于磁体阵列之间。 在另一个实施例中，头部堆叠组件包括将顶部堆叠组件分成定位器区域和换能器区域的纬向轴线。 次级线圈阵列基本位于头部组合组件的定位器区域内。 定位器产生一次力和二次力，其组合以在沿着纵向轴线的方向上产生恒定的净力，同时数据换能器在内径和外径之间移动。