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1. 发明授权

US06671121B1 Minimizing milli-actuator reactive impulse and excessive power current 有权
标题翻译：最大限度地减小执行器无功脉冲和过大的功率电流
公开(公告)号：US06671121B1
公开(公告)日：2003-12-30
申请号：US09644410
申请日：2000-08-23
申请人： Robert T. Bradbury , Travis E. Ell
发明人： Robert T. Bradbury , Travis E. Ell
IPC分类号： G11B5596
CPC分类号： G11B5/54 , G11B21/12
摘要： An information handling system, such as a disc drive, includes a base, a disc stack rotatably attached to the base, and an actuator assembly movably attached to the base, with multiple movable mill-actuator arms mounted on one portion of the actuator assembly. Attached to an end of the actuator is a voice coil which forms a portion of a voice coil motor. Magnets attached to the base form the other portion of the voice coil motor. A current driver for the voice coil delivers an amount of current to the voice coil to move the actuator assembly. Attached to another end of the actuator assembly is one or more transducers. In order to minimize the disturbance of a seeking milli-actuator, the operation to be executed is to cause the first milli-actuator to return slowly to its rest or zero position. A rate of return control circuit is implemented to drive a milli-actuator such that a milli-actuator at a non-zero or non-rest position will be returned to a rest position at a rate slower than a seeking milli-actuator.
摘要翻译：诸如盘驱动器的信息处理系统包括基座，可旋转地附接到基座的盘叠和可移动地附接到基座的致动器组件，多个可动铣刀致动器臂安装在致动器组件的一部分上。连接到致动器的端部的是形成音圈电动机的一部分的音圈。连接到基座的磁铁形成音圈电机的另一部分。用于音圈的电流驱动器向音圈传送一定量的电流以移动致动器组件。连接到致动器组件的另一端是一个或多个换能器。为了最小化搜索毫秒致动器的干扰，要执行的操作是使第一毫微致动器缓慢返回到其静止或零位置。执行返回率控制电路以驱动毫致动器，使得处于非零或非静止位置的毫激动器将以比搜索微致动器慢的速率返回到静止位置。

2. 发明授权

US06249064B1 Magneto-striction microactuator 失效
标题翻译：磁致伸缩微致动器
公开(公告)号：US06249064B1
公开(公告)日：2001-06-19
申请号：US09303205
申请日：1999-04-30
申请人： Robert T. Bradbury
发明人： Robert T. Bradbury
IPC分类号： H02K706
CPC分类号： G11B5/5552 , H01L41/12
摘要： Apparatus and method for providing microactuator positional control in a disc drive having a rotatable disc on which a plurality of tracks are defined and an actuator assembly which supports a head adjacent the tracks. An actuator motor is used to provide primary positioning of the head through the controlled application of current to a coil of the actuator motor. A microactuator, opposite the actuator motor coil, has a pair of microactuator coils wound about respective magneto-striction beams so that, in response to drive currents passed through the microactuator coils, a selected one of the magneto-striction beams increases in length and the remaining magneto-striction beam decreases in length. The magneto-striction beams act upon a pivot assembly coupled to the head to displace the head to a final desired position adjacent the disc.
摘要翻译：在具有可旋转盘的盘驱动器中提供微致动器位置控制的装置和方法，其上限定有多个轨迹;以及致动器组件，其支撑与轨道相邻的头部。致动器马达用于通过将电流控制施加到致动器马达的线圈来提供头部的主要定位。与致动器马达线圈相对的微致动器具有围绕相应磁致伸缩梁卷绕的一对微致动器线圈，使得响应于通过微致动器线圈的驱动电流，选定的一个磁致伸缩梁的长度增加，并且剩余的磁致伸缩梁长度减小。磁致伸缩梁作用在联接到头部的枢轴组件上，以将头移动到与盘相邻的最终期望位置。

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