公开(公告)号：US4622516A

公开(公告)日：1986-11-11

申请号：US505047

申请日：1983-06-16

Applicant: Patrick L. Hearn ,  Charles M. Riggle ,  Shyam C. Parikh ,  Kenneth F. Veseskis

Inventor： Patrick L. Hearn ,  Charles M. Riggle ,  Shyam C. Parikh ,  Kenneth F. Veseskis

IPC: G01P3/52 ,  G01P3/46 ,  G11B5/55 ,  G11B21/08

CPC classification number: G01P3/465 ,  G11B5/5521

Abstract: A magnetic tachometer for generating a signal as a function of the velocity of a transducer positioning arm in a disk drive. The tachometer is formed by a pair of fixed parallel coils separated by a distance sufficient to allow a magnet, attached to a counterbalance portion of the rotary positioning arm, to move therebetween and thus to generate a voltage as a function of the velocity of the magnet. The coils are each wound over a thin armature member which is saturated by the magnet's magnetic field and they are differentially coupled to produce common mode rejection.

Abstract translation: 用于产生作为盘驱动器中的换能器定位臂的速度的函数的信号的磁转速计。 转速计由一对固定的平行线圈形成，所述一对固定的平行线圈被隔开一定距离，该距离足以允许安装在旋转定位臂的平衡部分上的磁体在其间移动，从而产生作为磁体速度的函数的电压 。 线圈各自卷绕在被磁体的磁场饱和的薄电枢构件上，并且它们被差分耦合以产生共模抑制。

公开(公告)号：US5305161A

公开(公告)日：1994-04-19

申请号：US980308

申请日：1992-11-23

Applicant: Matthew F. Giovanetti ,  Kenneth F. Veseskis ,  Fernando A. Zayas ,  Bernardo Rub

Inventor： Matthew F. Giovanetti ,  Kenneth F. Veseskis ,  Fernando A. Zayas ,  Bernardo Rub

IPC: G11B21/08 ,  G11B5/596

CPC classification number: G11B21/083

Abstract: A method and apparatus for optimizing the track seeking operation of disc drives by adaptively changing the seek velocity profile in response to the actual performance of the drive during track seeking operations based upon the amount of head overshoot and the actuator power dissipation.

Abstract translation: 一种通过基于头部过冲量和致动器功率耗散量，在追踪操作期间响应于驱动器的实际性能自适应地改变寻道速度分布来优化磁盘驱动器的磁道寻找操作的方法和装置。