Velocity control system for an actuator assembly
    1.
    发明授权
    Velocity control system for an actuator assembly 有权
    用于执行器组件的速度控制系统

    公开(公告)号:US07259933B2

    公开(公告)日:2007-08-21

    申请号:US11139062

    申请日:2005-05-27

    IPC分类号: G11B5/596 G11B21/02

    CPC分类号: G11B21/12 G11B5/54

    摘要: A method for generating a velocity command for an actuator assembly is provided. The actuator assembly includes an actuator arm, which is to move over a plurality of surfaces. The method begins by providing a compensation torque for each of the plurality of surfaces. A position of the actuator arm is determined so that it may be mapped to one of the plurality of surfaces, which is the present surface over which the actuator arm is moving. A target velocity is then provided for the actuator arm and input to a controller, which generates a velocity command from the target velocity and a selected compensation torque, which is the compensation torque of the present surface.

    摘要翻译: 提供了一种用于产生用于致动器组件的速度指令的方法。 致动器组件包括致动器臂,其将在多个表面上移动。 该方法开始于为多个表面中的每一个提供补偿扭矩。 确定致动器臂的位置,使得其可以映射到作为致动器臂正在移动的当前表面的多个表面中的一个表面。 然后为致动器臂提供目标速度并输入到控制器,该控制器从目标速度产生速度指令,以及选择的补偿转矩(作为当前表面的补偿扭矩)。

    Ramp unload in disc drives
    2.
    发明授权
    Ramp unload in disc drives 有权
    磁盘驱动器中的斜坡卸载

    公开(公告)号:US07352523B2

    公开(公告)日:2008-04-01

    申请号:US11213853

    申请日:2005-08-30

    IPC分类号: G11B21/02

    CPC分类号: G11B21/12 G11B5/54

    摘要: Embodiments of the present invention provide for apparatus and methods for performing unload operations, including enabling read/write heads to reach a desired velocity at the ramp. Embodiments of the present invention are particularly beneficial for handheld products where low power consumption and reliability are important requirements.

    摘要翻译: 本发明的实施例提供了用于执行卸载操作的装置和方法,包括使得读/写头能够在斜坡处达到期望的速度。 本发明的实施例对于低功耗和可靠性是重要要求的手持产品特别有利。

    Method and apparatus for handling resonance effects in disc drives using active damping
    3.
    发明授权
    Method and apparatus for handling resonance effects in disc drives using active damping 有权
    用于使用主动阻尼处理磁盘驱动器中的共振效应的方法和装置

    公开(公告)号:US06831804B2

    公开(公告)日:2004-12-14

    申请号:US09810435

    申请日:2001-03-16

    IPC分类号: G11B5596

    CPC分类号: G11B5/59627 G11B5/5582

    摘要: A method of handling resonance effects on disc drives includes the steps of monitoring a position error signal (PES) for an actuator arm of a disc drive, generating a feedforward compensation signal from the PES using a bandpass filter, and applying the compensation signal to a servo control signal. The bandpass filter has a center frequency set to a known resonance frequency. A disc drive includes an actuator assembly including an arm for carrying a head in a transducing relation with respect to a disc in response to a control signal, and a controller that monitors a PES for the arm and generates the control signal. The controller includes a servo controller that generates a servo control signal from the PES, and a feedforward compensation element which bandpass filters the PES to generate a compensation signal which is combined with the servo control signal to generate the control signal.

    摘要翻译: 一种处理对磁盘驱动器的共振效应的方法包括以下步骤:监视磁盘驱动器的致动器臂的位置误差信号(PES),使用带通滤波器从PES生成前馈补偿信号,并将补偿信号施加到 伺服控制信号。 带通滤波器具有设置为已知谐振频率的中心频率。 盘驱动器包括致动器组件,该致动器组件包括用于响应于控制信号而携带相对于盘的转换关系的头的臂,以及监控臂的PES并产生控制信号的控制器。 控制器包括产生来自PES的伺服控制信号的伺服控制器,以及前馈补偿元件,其通过对PES进行滤波以产生与伺服控制信号组合以产生控制信号的补偿信号。