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    • 6. 发明授权
    • Method and apparatus reducing off-track head motion due to disk vibration in a disk drive through flexure mounting and/or non-symmetric hinging within the head gimbal assembly
    • 方法和装置通过磁头万向架组件内的弯曲安装和/或非对称铰链减少磁盘驱动器中的磁盘振动造成的偏离磁头运动
    • US06920018B2
    • 2005-07-19
    • US10618524
    • 2003-07-10
    • Dong-Ho OhSeong-Woo KangYun-Sik HanYoung-Hoon KimMyeong-Eop KimTae-Yeon HwangJae-Won Kim
    • Dong-Ho OhSeong-Woo KangYun-Sik HanYoung-Hoon KimMyeong-Eop KimTae-Yeon HwangJae-Won Kim
    • G11B5/56G11B5/596G11B5/60
    • G11B5/59627
    • Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR' induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly.An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention.
    • 提供了改进的头万向节组件,减少了硬盘驱动器中的TMR(跟踪错位)。 这些头万向架组件与当代头万向架组件一样机械简单,在平盘表面上支撑平行的滑动滑块,并减少由磁盘振动引起的TMR。 与其他已知方法相比,其轨迹密度和转速可比较容易构建,更可靠,成本更低。 改进的头万向节组件包括三组机构,当盘表面平坦时,滑块平行于盘表面移动,并且当盘表面弯曲时,将滑块径向移动到轨道。 第一和第三机构以及第二和第三机构可以一起用在头部万向架组件中。 改进和独特的伺服控制器方案导致PES性能的总体改进,特别是当应用于采用本发明的TMR减小机构的硬盘驱动器时。 伺服控制器在磁盘振动频率范围内取消增益,有利于提高低频干扰的抑制。 当应用于具有本发明的TMR减少机制的硬盘驱动器时,这导致最低的PES统计。