公开(公告)号：JP2009217927A

公开(公告)日：2009-09-24

申请号：JP2009115063

申请日：2009-05-11

Applicant: Cirrus Logic Inc ,  シーラス ロジック,インコーポレイテッドCirrus Logic,Inc.

Inventor： ROMANO PAUL M ,  SUPINO LOUIS

IPC: G11B21/08 ,  G11B21/10 ,  G11B5/00 ,  G11B5/55 ,  G11B5/596

CPC classification number: G11B5/59683 ,  G11B5/5547 ,  G11B2005/0016

Abstract: PROBLEM TO BE SOLVED: To provide a low-cost, more efficient magnetic disk servo control system that compensates for non-linear gain variations associated with MR read heads.
SOLUTION: A position error X149 is multiplied by a positive gain 47 or a negative gain 48 depending on the state of a switch 46 to generate an acceleration command U53 as input to the controlled system 44. The output of an integrator 54 is the velocity of a controlled system which is also the negative -X255 of the position error velocity. When the switch 46 selects the positive gain 47, it is a negative feedback system, and when the switch 46 selects the negative gain 48, it is a positive feedback system. In each of the structures, the system is unstable. However, the system can be made stable by repeatedly switching between the two structures.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种低成本，更高效的磁盘伺服控制系统，其补偿与MR读取头相关联的非线性增益变化。 解决方案：位置误差X149根据开关46的状态乘以正增益47或负增益48，以产生加速指令U53作为对受控系统44的输入。积分器54的输出为 受控系统的速度也是位置误差速度的负-X255。 当开关46选择正增益47时，它是负反馈系统，并且当开关46选择负增益48时，它是正反馈系统。 在每个结构中，系统不稳定。 然而，可以通过在两个结构之间重复切换来使系统变得稳定。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2010061799A

公开(公告)日：2010-03-18

申请号：JP2009256586

申请日：2009-11-09

Applicant: Cirrus Logic Inc ,  シーラス ロジック,インコーポレイテッドCirrus Logic,Inc.

Inventor： ROMANO PAUL M ,  SUPINO LOUIS

IPC: G11B21/08 ,  G11B21/10 ,  G11B5/00 ,  G11B5/55 ,  G11B5/596

CPC classification number: G11B5/59683 ,  G11B5/5547 ,  G11B2005/0016

Abstract: PROBLEM TO BE SOLVED: To provide a sliding mode controller for controlling the motion of a magnetoresistive (MR) read head actuated by a voice coil motor over a rotating magnetic disk storage medium. SOLUTION: The magnetic disk 4 includes a plurality of concentric data tracks recorded on the surface, and each data track includes user data and servo data. The sliding mode controller 26 operates by multiplying a head position error phase state and a head position error speed phase state by respective switching gains to force the phase states to follow a predetermined phase state trajectory. The phase state trajectory is defined by a single linear segment , a variable linear segment, multiple linear segments over the entire region of excursion, or optimal parabolic acceleration and deceleration segments. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种滑动模式控制器，用于控制由音圈电机在旋转磁盘存储介质上驱动的磁阻（MR）读头的运动。 解决方案：磁盘4包括记录在表面上的多个同心数据磁道，每个数据磁道包括用户数据和伺服数据。 滑动模式控制器26通过将头部位置误差相位状态和头部位置误差速度相位状态乘以相应的切换增益来操作，以迫使相位状态遵循预定的相位状态轨迹。 相位状态轨迹由单个线性段，可变线性段，整个偏移区域上的多个线性段或优化的抛物线加速和减速段来定义。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009004095A

公开(公告)日：2009-01-08

申请号：JP2008256797

申请日：2008-10-01

Applicant: Cirrus Logic Inc ,  シーラス ロジック,インコーポレイテッドCirrus Logic,Inc.

Inventor： SUPINO LOUIS ,  ROMANO PAUL M ,  REIFF FRANCIS H

IPC: G11B7/085 ,  G05B13/02 ,  G11B7/09

CPC classification number: G11B7/0946 ,  G05B13/0255 ,  G11B7/08529 ,  G11B7/0908

Abstract: PROBLEM TO BE SOLVED: To provide an optical disk drive servo control system in which sensitivity to a change in parameter is not so high, and transition can be controlled more favorably and the implementing cost of a complex adaptive linear controller is eliminated.
SOLUTION: The optical disk storage system is provided with a sliding mode controller for actuating an optical lead head assembly on an optical disk during focus capturing, focus tracking, track seeking and centerline tracking. The sliding mode controller operates by switching feedback between a positive state and a negative state so as to follow a predetermined phase state track by allocating a certain phase state (e.g., position error or speed of the lead head).
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种光盘驱动器伺服控制系统，其中对参数变化的灵敏度不那么高，并且可以更有利地控制转换，并且消除了复杂的自适应线性控制器的实现成本。 解决方案：光盘存储系统设置有滑动模式控制器，用于在聚焦捕获，聚焦跟踪，跟踪寻找和中心线跟踪期间致动光盘上的光引导头组件。 滑动模式控制器通过在正状态和负状态之间切换反馈来操作，以便通过分配一定的相位状态（例如，引导头的位置误差或速度）来跟随预定的相位状态轨迹。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008052901A

公开(公告)日：2008-03-06

申请号：JP2007261426

申请日：2007-10-04

Applicant: Cirrus Logic Inc ,  シーラス ロジック,インコーポレイテッドCirrus Logic,Inc.

Inventor： ZHU SHUANGXIA ,  SUPINO LOUIS ,  GRABA JIM ,  ROMANO PAUL

IPC: G11B7/085 ,  G11B21/08 ,  G11B7/09 ,  G11B21/10

CPC classification number: G11B7/08541 ,  G11B7/0901

Abstract: PROBLEM TO BE SOLVED: To provide an improved seek detector for an optical disk storage device, capable of generating a quadrature signal from a discrete-time TES signal and a discrete-time RF baseband signal.
SOLUTION: In the optical disk storage device wherein user data is demodulated from a light beam reflecting off data pits in tracks of an optical disk storage medium, a quadrature seek signal is generated indicative of the light beam crossing tracks of the optical disk during a seek operation. The quadrature seek signal is generated from a discrete-time tracking error signal (TES) and a discrete-time RF baseband signal. The discrete-time TES is generated according to the mode of operation, compact disk (CD) or digital video disk (DVD).
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 解决的问题：提供一种能够从离散时间TES信号和离散时间RF基带信号产生正交信号的用于光盘存储装置的改进的寻道检测器。 解决方案：在从光盘存储介质的轨道中反射数据凹坑的光束解调用户数据的光盘存储装置中，产生指示光束与光盘交叉轨迹的正交寻道信号 在寻求操作期间。 正交搜索信号由离散时间跟踪误差信号（TES）和离散时间RF基带信号产生。 离散时间TES根据操作模式，光盘（CD）或数字视频盘（DVD）生成。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007035278A

公开(公告)日：2007-02-08

申请号：JP2006307240

申请日：2006-11-13

Applicant: Cirrus Logic Inc ,  シーラス ロジック,インコーポレイテッドCirrus Logic,Inc.

Inventor： SUPINO LOUIS ,  ROMANO PAUL M ,  REIFF FRANCIS H

IPC: G11B7/085 ,  G05B13/02 ,  G11B7/09

CPC classification number: G11B7/0946 ,  G05B13/0255 ,  G11B7/08529 ,  G11B7/0908

Abstract: PROBLEM TO BE SOLVED: To provide an optical disk drive servo control system having not so high sensitivity to a parameter change, capable of controlling transition better and reducing the performance cost of a complex adaptive linear controller. SOLUTION: The optical disk memory system is provided with a sliding mode controller 23 actuating an optical read head assembly on an optical disk during focus capture, focus tracking, track seek and center line tracking. This sliding mode controller operates while switching positive and negative feedback to follow a prescribed phase state locus by fitting a prescribed phase state (e.g. position error and speed of a read head). COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种对参数变化灵敏度不高的光盘驱动器伺服控制系统，能够更好地控制转换并降低复杂自适应线性控制器的性能成本。 解决方案：光盘存储器系统设置有滑动模式控制器23，其在聚焦捕获，聚焦跟踪，跟踪寻找和中心线跟踪期间致动光盘上的光学读取头组件。 该滑动模式控制器在通过拟合规定的相位状态（例如位置误差和读取头的速度）来切换正和负反馈以跟随规定的相位状态轨迹时进行操作。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JPH1021557A

公开(公告)日：1998-01-23

申请号：JP7019397

申请日：1997-03-24

Applicant: CIRRUS LOGIC INC

Inventor： SUPINO LOUIS ,  ROMANO PAUL M ,  REIFF FRANCIS H

IPC: G05B13/02 ,  G11B7/085 ,  G11B7/09

Abstract: PROBLEM TO BE SOLVED: To provide an optical disk drive servo control system having not so high sensitivity to a parameter change, capable of controlling transition better and reducing the execution cost of a complex adaptive linear controller. SOLUTION: The optical disk memory system is provided with a sliding mode controller 23 actuating an optical read head assembly on an optical disk 14 during focus capture, focus tracking, track seek and center line tracking. This sliding mode controller 23 operates while switching positive and negative feedback to follow a prescribed phase state locus by fitting a prescribed phase state (e.g. position error and speed of read head).

公开(公告)号：JP2007220302A

公开(公告)日：2007-08-30

申请号：JP2007144213

申请日：2007-05-30

Applicant: Cirrus Logic Inc ,  シーラス ロジック, インコーポレイテッド

Inventor： SUPINO LOUIS

IPC: G11B21/10 ,  G11B5/55 ,  G11B5/596

CPC classification number: G11B5/59622 ,  G11B5/5547

Abstract: PROBLEM TO BE SOLVED: To provide a sliding mode controller for controlling a read/write head actuator in a magnetic disk drive storage system.
SOLUTION: In the sliding mode controller, a voice coil motor connected to the actuator operates to adjust the position of the read/write head over a selected data track recorded on a magnetic medium. The sliding mode controller comprises an improved method for reducing chattering associated with the inherent operation of such a controller, for example, rapid switching between gains to force the observable phase states to follow a predetermined phase state trajectory. The sliding mode controller generates a motor control command by multiplying an actuator position error and an actuator position error velocity by respective switching gains. The gains are switched according to a predetermined relationship σ between the phase states and a phase state trajectory.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于控制磁盘驱动器存储系统中的读/写头致动器的滑动模式控制器。 解决方案：在滑动模式控制器中，连接到致动器的音圈电动机用于调节读/写头在记录在磁介质上的所选数据轨道上的位置。 滑动模式控制器包括用于减少与这种控制器的固有操作相关联的抖动的改进方法，例如在增益之间的快速切换以迫使可观察相位状态遵循预定的相位状态轨迹。 滑动模式控制器通过将致动器位置误差和致动器位置误差速度乘以相应的开关增益来产生电动机控制命令。 根据相位状态和相位状态轨迹之间的预定关系σ切换增益。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007220301A

公开(公告)日：2007-08-30

申请号：JP2007142615

申请日：2007-05-29

Applicant: Cirrus Logic Inc ,  シーラス ロジック, インコーポレイテッド

Inventor： ROMANO PAUL M ,  SUPINO LOUIS

IPC: G11B21/08 ,  G11B21/10 ,  G11B5/00 ,  G11B5/55 ,  G11B5/596

CPC classification number: G11B5/59683 ,  G11B5/5547 ,  G11B2005/0016

Abstract: PROBLEM TO BE SOLVED: To provide a sliding mode controller for controlling the motion of a magneto-resistive (MR) read head.
SOLUTION: A magnetic disk comprises a plurality of concentric data tracks recorded thereon wherein each data track comprises user data and servo data. The sliding mode controller operates by multiplying a head position error phase state and a head position error velocity phase state by respective switching gains to force the phase states to follow a predetermined phase state trajectory. The phase state trajectory can be defined by a single linear segment, a variable linear segment, multiple linear segments over the entire region of excursion, or optimum parabolic acceleration and deceleration segments. Switching logic, responsive to the phase states and a trajectory segment value σ, switches between positive and negative feedback gains to drive the phase states toward a current trajectory segment.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于控制磁阻（MR）读取头的运动的滑动模式控制器。 解决方案：磁盘包括记录在其上的多个同心数据轨道，其中每个数据轨道包括用户数据和伺服数据。 滑动模式控制器通过将头部位置误差相位状态和头部位置误差速度相位状态乘以相应的切换增益来操作，以迫使相位状态遵循预定的相位状态轨迹。 相位状态轨迹可以由单个线性段，可变线性段，整个移动区域上的多个线性段或最佳抛物线加速和减速段来定义。 响应于相位状态和轨迹段值σ的开关逻辑在正和负反馈增益之间切换以将相位状态驱动到当前轨迹段。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JPH11273095A

公开(公告)日：1999-10-08

申请号：JP35363198

申请日：1998-12-11

Applicant: Cirrus Logic Inc ,  シーラス ロジック,インコーポレイテッド

Inventor： ZHU SHUANGXIA ,  SUPINO LOUIS ,  GRABA JIM ,  ROMANO PAUL

IPC: G11B21/08 ,  G11B7/085 ,  G11B7/09 ,  G11B21/10

CPC classification number: G11B7/08541 ,  G11B7/0901

Abstract: PROBLEM TO BE SOLVED: To generate orthogonal signals from a discontinuous timewise TES signal and a discontinuous timewise RF baseband signal by detecting pulses being in the discontinuous timewise TES signal expressing the position of a light beam with respect to the center line of a track and the discontinuous timewise RF baseband signal and counting the number of tracks in which the light beam traverses in its seeking operation. SOLUTION: A discontinuous timewise TES signal 114 is selected by a MUX 100. On the other hand, a discontinuous timewise RF baseband signal 112 is extracted by an envelope detector 110. The discontinuous timewise TES signal 114 and the RF baseband signal 112 are synchronized by a synchronizer 118 according to a current seek speed and an operation mode and they pass through LPFs 116A, 116B and a track traversing frequency is extracted. Then, these signals are respectively converted into binary square-wave signals TEX 128 and REX 130 by a TEX detector 132 and a REX detector 134 to form orthogonal seek signals.

Abstract translation: 要解决的问题：通过检测表示光束相对于轨道的中心线的位置的不连续的时间TES信号中的脉冲来产生来自不连续的时间TES信号和不连续的时间RF基带信号的正交信号， 不连续的时间上的RF基带信号，并且在其寻道操作中对光束穿过的轨道数进行计数。 解决方案：由MUX100选择不连续的时间TES信号114.另一方面，由包络检测器110提取不连续的时间上的RF基带信号112.不连续的时间TES信号114和RF基带信号112通过 提取根据当前搜索速度和操作模式的同步器118，并且它们通过LPF 116A，116B和轨道横越频率被提取。 然后，这些信号通过TEX检测器132和REX检测器134分别转换成二进制方波信号TEX 128和REX 130，以形成正交寻道信号。

公开(公告)号：DE69615037T2

公开(公告)日：2002-04-18

申请号：DE69615037

申请日：1996-07-23

Applicant: CIRRUS LOGIC INC

Inventor： SUPINO LOUIS

IPC: G11B21/10 ,  G11B5/55 ,  G11B5/596