公开(公告)号：US09460744B1

公开(公告)日：2016-10-04

申请号：US14747413

申请日：2015-06-23

Applicant: Seagate Technology LLC

Inventor： Stephen Matthew Gaub ,  Lou Supino

IPC: G11B21/02 ,  G11B5/596

CPC classification number: G11B5/59694 ,  G11B5/556 ,  G11B5/5582

Abstract: A voice coil motor control signal is detected being coupled into a vibration sensor of a hard disk drive. The vibration sensor is used to provide a feedforward signal to a servo control system of the hard disk drive. In response to detecting the coupling, the feedforward signal is modified to prevent instability of the servo control system.

Abstract translation: 检测到音圈电机控制信号被耦合到硬盘驱动器的振动传感器中。 振动传感器用于向硬盘驱动器的伺服控制系统提供前馈信号。 响应于检测到耦合，前馈信号被修改以防止伺服控制系统的不稳定性。

公开(公告)号：US10366718B1

公开(公告)日：2019-07-30

申请号：US15933726

申请日：2018-03-23

Applicant: Seagate Technology LLC

Inventor： Lou Supino

IPC: G11B5/09 ,  G11B5/596 ,  G11B5/48 ,  G11B5/012

Abstract: A signal is monitored that provides an indicator of disturbance affecting a hard disk drive. In response to determining that the indicator of the disturbance satisfies a threshold, a lattice recursive least squares computation is applied to the signal to determine at least one notch frequency. A notch filter is formed using the at least one notch frequency. The notch filter is used by a servo controller loop that positions a read/write head over a disk of the hard disk drive. The notch filter is applied to the servo control loop for subsequent positioning of the read/write head.

公开(公告)号：US20170017216A1

公开(公告)日：2017-01-19

申请号：US14797674

申请日：2015-07-13

Applicant: Seagate Technology LLC

Inventor： Zhiqiang Xing ,  Lou Supino

IPC: G05B19/042

CPC classification number: G05B19/042 ,  G05B2219/37435

Abstract: Apparatus and method for controlling the position of a control object using a multi-stage actuator. In some embodiments, a multi-stage actuator is provided with first and second actuation stages adapted to position a control object. A control circuit includes a multi-tap lattice structure and parallel first and second multiple regression filters coupled to respective taps of the multi-tap lattice structure. The control circuit concurrently generates and applies first and second disturbance rejection signals to the respective first and second actuation stages to compensate a disturbance signal component in a position error signal (PES) indicative of position error of the control object.

Abstract translation: 使用多级致动器控制控制对象的位置的装置和方法。 在一些实施例中，多级致动器设置有适于定位控制对象的第一和第二致动级。 控制电路包括多抽头晶格结构以及耦合到多抽头晶格结构的相应抽头的并行的第一和第二多元回归滤波器。 控制电路同时产生并施加第一和第二干扰抑制信号到相应的第一和第二致动级，以补偿指示控制对象的位置误差的位置误差信号（PES）中的干扰信号分量。

公开(公告)号：US08737014B2

公开(公告)日：2014-05-27

申请号：US13755715

申请日：2013-01-31

Applicant: Seagate Technology LLC

Inventor： Christopher Anthony Massarotti ,  Frank William Bernett ,  Lou Supino

IPC: G11B5/02

CPC classification number: G11B33/08 ,  G11B5/5582 ,  G11B5/59694 ,  G11B19/042

Abstract: In accordance with certain embodiments, a method is provided for sensing linear vibration and rotational vibration. The method includes generating a combined linear vibration and rotational vibration signal. The combined linear vibration and rotational vibration signal may then be processed with an adaptive filter.

Abstract translation: 根据某些实施例，提供了一种用于感测线性振动和旋转振动的方法。 该方法包括产生组合的线性振动和旋转振动信号。 然后可以用自适应滤波器处理组合的线性振动和旋转振动信号。

公开(公告)号：US09933769B2

公开(公告)日：2018-04-03

申请号：US14797674

申请日：2015-07-13

Applicant: Seagate Technology LLC

Inventor： Zhiqiang Xing ,  Lou Supino

IPC: G01M1/38 ,  G05B13/00 ,  G05B15/00 ,  G05D23/00 ,  G05B19/042

CPC classification number: G05B19/042 ,  G05B2219/37435

Abstract: Apparatus and method for controlling the position of a control object using a multi-stage actuator. A multi-stage actuator is provided with first and second actuation stages adapted to position a control object. A control circuit includes a multi-tap lattice structure and parallel first and second multiple regression filters coupled to respective taps of the multi-tap lattice structure. The control circuit concurrently generates and applies first and second disturbance rejection signals to the respective first and second actuation stages to compensate a disturbance signal component in a position error signal (PES) indicative of position error of the control object.

公开(公告)号：US09202496B2

公开(公告)日：2015-12-01

申请号：US14188844

申请日：2014-02-25

Applicant: Seagate Technology LLC

Inventor： Lou Supino

IPC: G11B5/58 ,  G11B5/596 ,  G11B5/48 ,  G11B19/04

CPC classification number: G11B5/59694 ,  G11B5/4873 ,  G11B5/5582 ,  G11B5/58 ,  G11B5/59622 ,  G11B19/042

Abstract: In response to positioning a read/write head of a hard drive, a voice coil motor (VCM) input signal is applied to a voice coil motor and a microactuator (PZT) input signal is applied to a microactuator. A position signal is determined in response to positioning the read/write head. A PZT component is decoupled from the position signal to determine an estimated VCM response. The estimated VCM response used to determine an estimated VCM disturbance. A VCM component is decoupled from the position signal to determine an estimated PZT response. The estimated PZT response used to determine an estimated PZT disturbance. The VCM input signal and the PZT input signal are modified respectively to compensate for the estimated VCM disturbance and the estimated PZT disturbance.

Abstract translation: 响应于定位硬盘驱动器的读/写头，音圈电机（VCM）输入信号被施加到音圈电机，并且微致动器（PZT）输入信号被施加到微致动器。 响应于读/写头的定位来确定位置信号。 PZT分量与位置信号去耦，以确定估计的VCM响应。 估计的VCM响应用于确定估计的VCM干扰。 VCM组件与位置信号去耦，以确定估计的PZT响应。 估计的PZT响应用于确定估计的PZT干扰。 分别修改VCM输入信号和PZT输入信号，以补偿估计的VCM扰动和估计的PZT干扰。

公开(公告)号：US09858955B1

公开(公告)日：2018-01-02

申请号：US15231513

申请日：2016-08-08

Applicant: Seagate Technology LLC

Inventor： WenJun Cao ,  GuoQing Zhang ,  Xiang Lu ,  Qiang Bi ,  MingZhong Ding ,  Lou Supino

IPC: G11B5/09 ,  G11B5/55

CPC classification number: G11B5/5565 ,  G11B5/5526 ,  G11B5/5552

Abstract: An apparatus includes a microactuator controller configured to generate a microactuator control signal, a feedforward microactuator compensator configured to generate a microactuator compensation signal, and a microactuator model filter configured to filter a modified microactuator control signal. The microactuator compensation signal is configured to be injected into the microactuator control signal to generate the modified microactuator control signal. The microactuator model filter generates a filtered modified microactuator control signal and injects the filtered modified microactuator control signal into a position error signal to generate a modified position error signal.

公开(公告)号：US20150243313A1

公开(公告)日：2015-08-27

申请号：US14188844

申请日：2014-02-25

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Lou Supino

IPC: G11B5/596 ,  G11B5/48

CPC classification number: G11B5/59694 ,  G11B5/4873 ,  G11B5/5582 ,  G11B5/58 ,  G11B5/59622 ,  G11B19/042

Abstract: In response to positioning a read/write head of a hard drive, a voice coil motor (VCM) input signal is applied to a voice coil motor and a microactuator (PZT) input signal is applied to a microactuator. A position signal is determined in response to positioning the read/write head. A PZT component is decoupled from the position signal to determine an estimated VCM response. The estimated VCM response used to determine an estimated VCM disturbance. A VCM component is decoupled from the position signal to determine an estimated PZT response. The estimated PZT response used to determine an estimated PZT disturbance. The VCM input signal and the PZT input signal are modified respectively to compensate for the estimated VCM disturbance and the estimated PZT disturbance.

Abstract translation: 响应于定位硬盘驱动器的读/写头，音圈电机（VCM）输入信号被施加到音圈电机，并且微致动器（PZT）输入信号被施加到微致动器。 响应于读/写头的定位来确定位置信号。 PZT分量与位置信号去耦，以确定估计的VCM响应。 估计的VCM响应用于确定估计的VCM干扰。 VCM组件与位置信号去耦，以确定估计的PZT响应。 估计的PZT响应用于确定估计的PZT干扰。 分别修改VCM输入信号和PZT输入信号，以补偿估计的VCM扰动和估计的PZT干扰。

公开(公告)号：US20140104725A1

公开(公告)日：2014-04-17

申请号：US13755715

申请日：2013-01-31

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Christopher Anthony Massarotti ,  Frank William Bernett ,  Lou Supino

IPC: G11B33/08

CPC classification number: G11B33/08 ,  G11B5/5582 ,  G11B5/59694 ,  G11B19/042

Abstract: In accordance with certain embodiments, a method is provided for sensing linear vibration and rotational vibration. The method includes generating a combined linear vibration and rotational vibration signal. The combined linear vibration and rotational vibration signal may then be processed with an adaptive filter.

Abstract translation: 根据某些实施例，提供了一种用于感测线性振动和旋转振动的方法。 该方法包括产生组合的线性振动和旋转振动信号。 然后可以用自适应滤波器处理组合的线性振动和旋转振动信号。