公开(公告)号：US06298545B1

公开(公告)日：2001-10-09

申请号：US09459140

申请日：1999-12-10

申请人： Khosrow Mohajerani ,  Joseph M. Sampietro ,  Anoush M. Fard ,  Jeffrey G. Barina ,  Muhammad A. Hawwa ,  LeRoy A. Volz ,  Tien Q. Le ,  Daniel R. Vigil

发明人： Khosrow Mohajerani ,  Joseph M. Sampietro ,  Anoush M. Fard ,  Jeffrey G. Barina ,  Muhammad A. Hawwa ,  LeRoy A. Volz ,  Tien Q. Le ,  Daniel R. Vigil

IPC分类号： G11B542

CPC分类号： G11B5/54 ,  G11B5/4873 ,  G11B5/5552 ,  G11B21/085 ,  G11B21/24 ,  Y10T29/49025

摘要： A system for positioning a transducing head in a disc drive device over a selected track of a rotatable disc includes an actuator arm which is rotatable about an axis, a head suspension mechanism connected to the actuator arm, and a slider carrying a transducing head and supported by the head suspension mechanism. A low resolution motor moves the actuator arm about the axis to effect coarse movement of the head between tracks of the disc. A piezoelectric element is embedded in the actuator arm to distort the arm to effect fine positioning of the head. Control circuitry distributes electrical signals to the low resolution motor and the piezoelectric element to selectively control movement thereof. The piezoelectric element is embedded in the actuator arm by removing a predetermined amount of material from the actuator arm and bonding the piezoelectric element in the resulting space in the actuator arm.

摘要翻译： 用于将转换头定位在可旋转盘的选定轨道上的盘驱动装置中的系统包括可围绕轴旋转的致动器臂，连接到致动器臂的头悬挂机构，以及承载换能头的滑块 通过头悬挂机构。 低分辨率马达使致动器臂围绕轴线移动，以使头部在盘的轨道之间进行粗略移动。 压电元件嵌入在致动器臂中以扭曲臂以实现头部的精细定位。 控制电路将电信号分配到低分辨率电动机和压电元件以选择性地控制其运动。 通过从致动器臂中移除预定量的材料并将压电元件接合在致动器臂中的所得空间中，将压电元件嵌入致动器臂中。

公开(公告)号：US5557550A

公开(公告)日：1996-09-17

申请号：US212201

申请日：1994-03-11

申请人： Daniel R. Vigil ,  LeRoy A. Volz

发明人： Daniel R. Vigil ,  LeRoy A. Volz

IPC分类号： G11B5/55 ,  G11B19/04 ,  H02H5/04 ,  H02H9/00 ,  G08B21/00

CPC分类号： G11B19/04 ,  G11B5/5565 ,  H02H5/044

摘要： Junction overheating in an actuator controller IC used to position read/write heads in a magnetic disc storage device is prevented by temporarily decreasing actuator controller IC output signal duty cycle when excessive junction temperature is present. The present invention includes means for monitoring and comparing actuator controller IC junction temperature to a reference temperature, and for outputting a warning signal when junction temperature exceeds the reference temperature by too large a margin. The present invention introduces a time delay into the output signal from the actuator controller IC when the warning signal is present. The time delay may be fixed or variable in duration, and may be varied progressively in duration. The time delay may be generated using circuitry, software, firmware, or a combination thereof.

摘要翻译： 用于将读/写磁头定位在磁盘存储装置中的致动器控制器IC中的结过热通过在存在过多结温时暂时降低致动器控制器IC输出信号占空比来防止。 本发明包括用于监视和比较致动器控制器IC结温与参考温度的装置，并且当结温超过参考温度时输出警告信号太大的余量。 当存在警告信号时，本发明引入来自致动器控制器IC的输出信号的时间延迟。 时间延迟可以是固定的或持续时间可变的，并且可以在持续时间内逐渐变化。 可以使用电路，软件，固件或其组合来生成时​​间延迟。

公开(公告)号：US4843288A

公开(公告)日：1989-06-27

申请号：US174079

申请日：1988-03-28

申请人： Le Roy A. Volz ,  Daniel R. Vigil

发明人： Le Roy A. Volz ,  Daniel R. Vigil

IPC分类号： G11B19/20 ,  G11B19/28 ,  H02P6/06 ,  H02P27/06

CPC分类号： G11B19/20 ,  G11B19/28 ,  Y10S388/901 ,  Y10S388/91 ,  Y10S388/911 ,  Y10S388/915

摘要： A motor control system and related method are provided for phase and frequency locked operation of multiple spindle motors in a computer disk drive environment or the like, for coupling two or more disk drive units together to provide expanded data storage capability. The control system comprises a hybrid digital and analog network for producing a pulse width modulated control signal to control a disk drive spindle motor in a manner achieving frequency and phase locked relation with a reference signal. Multiple spindle motors are similarly driven in relation with the same reference signal, whereby the spindle motors are frequency and phase locked with respect to each other to permit, for example, parallel data transfer among the multiple disk drive units.

公开(公告)号：US6052251A

公开(公告)日：2000-04-18

申请号：US836292

申请日：1997-05-12

申请人： Khosrow Mohajerani ,  Joseph M. Sampietro ,  Anoush M. Fard ,  Jeffrey G. Barina ,  Muhammad A. Hawwa ,  LeRoy A. Volz ,  Tien Q. Le ,  Daniel R. Vigil

发明人： Khosrow Mohajerani ,  Joseph M. Sampietro ,  Anoush M. Fard ,  Jeffrey G. Barina ,  Muhammad A. Hawwa ,  LeRoy A. Volz ,  Tien Q. Le ,  Daniel R. Vigil

IPC分类号： G11B5/54 ,  G11B5/55 ,  G11B21/08 ,  G11B21/24

CPC分类号： G11B5/54 ,  G11B21/085 ,  G11B21/24 ,  G11B5/4873 ,  G11B5/5552 ,  Y10T29/49025

摘要： A system for positioning a transducing head in a disc drive device over a selected track of a rotatable disc includes an actuator arm which is rotatable about an axis, a head suspension mechanism connected to the actuator arm, and a slider carrying a transducing head and supported by the head suspension mechanism. A low resolution motor moves the actuator arm about the axis to effect coarse movement of the head between tracks of the disc. A piezoelectric element is embedded in the actuator arm to distort the arm to effect fine positioning of the head. Control circuitry distributes electrical signals to the low resolution motor and the piezoelectric element to selectively control movement thereof. The piezoelectric element is embedded in the actuator arm by removing a predetermined amount of material from the actuator arm and bonding the piezoelectric element in the resulting space it the actuator arm.

摘要翻译： PCT No.PCT / US97 / 07892 Sec。 371日期：1998年3月19日 102（e）1998年3月19日PCT PCT 1997年5月12日PCT公布。 公开号WO97 / 32044 日期1997年9月4日用于将转换头定位在可旋转盘的选定轨道上的盘驱动装置中的系统包括可围绕轴线旋转的致动器臂，连接到致动器臂的头悬挂机构和承载 转头并由头悬挂机构支撑。 低分辨率马达使致动器臂围绕轴线移动，以使头部在盘的轨道之间进行粗略移动。 压电元件嵌入在致动器臂中以扭曲臂以实现头部的精细定位。 控制电路将电信号分配到低分辨率电动机和压电元件以选择性地控制其运动。 通过从致动器臂移除预定量的材料并将压电元件接合在致动臂的所得空间中，将压电元件嵌入致动器臂中。