公开(公告)号：EP0013326A3

公开(公告)日：1980-09-17

申请号：EP79104718

申请日：1979-11-27

Applicant: International Business Machines Corporation

Inventor： Taylor, John Richard ,  Laishley, William John

IPC: G11B05/55 ,  G11B21/10 ,  G11B27/00

CPC classification number: G05B19/232 ,  G05B2219/41434 ,  G05B2219/42155 ,  G05B2219/42171 ,  G05B2219/42256 ,  G05B2219/42318 ,  G11B5/553 ,  G11B5/5547

Abstract: A sampled data servo positioning system employs an actuator (50) to move a member between a current and a target position. Incremental position feedback is provided only at sampling times. The system employs a model (60,61, 64) responsive to a velocity related input signal to produce a continually available model incremental position signal. Phase comparing means (70) indicates phase differences between the model and sampled position signals at the sampling times. The system has two operational configurations in the first of which a source of saturation control signals is connected to the actuator to cause maximum acceleration or deceleration thereof. In this first configuration, the model is forced to track the actuator motion by means of feed-forward plus feedback control. The feedforward signal represents actuator performance while the feedback signal is the position signal phase difference. In the second operational configuration, a velocity profile signal is applied to the model and the actuator is forced to track the model by means of feedfoward plus feedback control. The feedback signal is again the position signal phase difference but the feedforward signal is a predetermined signal representing the desired actuator current to execute the velocity profile. The sampled data servo positioning system may be the access motion control system of a sector servo disk file.

公开(公告)号：WO1999013461A1

公开(公告)日：1999-03-18

申请号：PCT/US1997016153

申请日：1997-09-11

Applicant: GAVIT, Stephan, E.

IPC: G11B05/55

CPC classification number: G11B5/5504 ,  G11B5/0083 ,  G11B5/56

Abstract: A recording device (10) operative to read and write data on a recording medium (200) has a support frame (26), a take-up mechanism (24), bearing elements (18, 22) on opposite sides of a recording head (20). The recording head (20) is mounted for translational movement by a positioning assembly which includes a pair of flexure plates (54, 56) having flexure portions (120, 150) defining torsional springs with oppositely acting torques to resist rotational movement of the recording head (20) during reciprocal movement. A drive includes a stepper motor (96) that operates a shaft cam (94) that bears against a head cam block (86) to move flexure portion (120) and a recording head (20) against a restorative force of flexure portions (120, 150). Cam nuts (34, 38) adjust skew and a cam element (107) adjusts tape penetration.

Abstract translation: 一种用于在记录介质（200）上读取和写入数据的记录装置（10）具有支撑框架（26），卷取机构（24），在记录头的相对侧上的支承元件（18,22） （20）。 记录头（20）安装成用于通过定位组件进行平移运动，定位组件包括一对弯曲板（54,56），该弯曲板具有弯曲部分（120,150），该弯曲部分限定扭转弹簧，其具有相反作用的扭矩以阻止记录头的旋转运动 （20）。 驱动器包括步进马达（96），该步进马达（96）操作轴承凸轮（94），该凸轮凸轮抵靠头部凸轮块（86）移动挠曲部分（120）和记录头（20），以抵抗弯曲部分（120）的恢复力 ，150）。 凸轮螺母（34,38）调节偏斜，并且凸轮元件（107）调节胶带穿透。

公开(公告)号：WO1998049677A1

公开(公告)日：1998-11-05

申请号：PCT/US1997017655

申请日：1997-09-30

Applicant: SEAGATE TECHNOLOGY, INC.

Inventor： SEAGATE TECHNOLOGY, INC. ,  LIU, Zhiqiang ,  FUNCHES, Otis, L. ,  HAMPSHIRE, Randall, D.

IPC: G11B05/55

CPC classification number: G11B5/5582

Abstract: Apparatus and method for improving vibration and mechanical shock response of a control system through the use of discrete-time sliding mode control with variable parameters are disclosed. A servo circuit (150) for positioning a head (118) of a disc drive (100) includes a reference generator (314, 414) generating position and velocity references, an observer (306, 406) generating position and velocity estimates, and error circuitry (322, 326, 422, 426) for determining position and velocity errors therefrom. Gain circuitry (330, 332, 334, 336, 338, 340, 430, 432) applies variable position and velocity gains to the position and velocity errors, respectively, the position and velocity gains varying with respect to at least the magnitudes of the position errors.

Abstract translation: 公开了通过使用具有可变参数的离散时间滑动模式控制来改善控制系统的振动和机械冲击响应的装置和方法。 用于定位磁盘驱动器（100）的磁头（118）的伺服电路（150）包括产生位置和速度参考的参考发生器（314,414），产生位置和速度估计的观测器（306,406）和误差 用于确定位置和速度误差的电路（322,326,422,426）。 增益电路（330,332,334,336,338,340,430,432）分别对位置和速度误差施加可变位置和速度增益，位置和速度增益分别相对于位置的至少大小变化 错误。

公开(公告)号：WO1998014937A1

公开(公告)日：1998-04-09

申请号：PCT/US1997018043

申请日：1997-10-03

Applicant: QUANTUM CORPORATION

Inventor： QUANTUM CORPORATION ,  WILLIAMS, Stephen, P. ,  CARPENTER, Christopher, M. ,  AKIN, William, R., Jr. ,  BALAKRISHNAN, Arun

IPC: G11B05/55

CPC classification number: G11B5/486 ,  G11B5/484 ,  G11B5/5521 ,  G11B21/083

Abstract: Ahead suspension has an integrated trace conductor array (16) for supporting and electrically interconnecting a read/write head (26) to electronic circuitry (54) in a disk drive (30). The electrical micro strip transmission line characteristics of the conductor array (16) is controlled by the selective placement and width sizing of shaped openings in the suspension at regions adjacent to the conductor paths.

Abstract translation: 前悬挂具有用于将读/写头（26）电连接到磁盘驱动器（30）中的电子电路（54）的集成跟踪导体阵列（16）。 导体阵列（16）的电微带传输线特性通过在与导体路径相邻的区域的悬浮液中的成形开口的选择性放置和宽度尺寸来控制。

公开(公告)号：WO1997036290A1

公开(公告)日：1997-10-02

申请号：PCT/US1997005346

申请日：1997-03-21

Applicant: QUANTUM CORPORATION

Inventor： QUANTUM CORPORATION ,  WILIAMS, Stephen, P. ,  CARPENTER, Christopher, M. ,  AKIN, William, R., Jr.

IPC: G11B05/55

CPC classification number: G11B5/486 ,  G11B5/012 ,  G11B5/035 ,  G11B25/043 ,  G11B2005/0013

Abstract: A suspension (10) having integrated conductors (16) for supporting and electrically interconnecting a read/write head (36) to electronic circuitry in a disk drive. The capacitance to ground of the conductors (16) is controlled by the selective placement of shaped voids (20) in the suspension (10) at regions adjacent to the conductor paths. Portions of the suspension (10) may be generally the complement of the conductor structure (16) shape.

Abstract translation: 具有集成导体（16）的悬架（10），用于将读/写头（36）电连接到磁盘驱动器中的电子电路。 通过在与导体路径相邻的区域中将形状的空隙（20）选择性地放置在悬架（10）中来控制导体（16）的接地电容。 悬架（10）的一部分通常可以是导体结构（16）形状的补码。

公开(公告)号：WO1997018555A1

公开(公告)日：1997-05-22

申请号：PCT/US1996018178

申请日：1996-09-17

Applicant: QUANTUM CORPORATION

Inventor： QUANTUM CORPORATION ,  KUMARASWAMY, Kasetty

IPC: G11B05/55

CPC classification number: G11B5/56

Abstract: A magnetic tape head tilting mechanism (20) for tilting the magnetic head (33) to a desired azimuth and adjusting the zenith of the magnetic head (33). The azimuth tilting mechanism uses a worm gear (40) and worm (17), driven by a stepper motor (28), to provide very fine angular resolution for the magnetic head (33). The fine angular resolution enables writing very high track densities and providing strong read signals. The zenith adjustment mechanism eliminates the cumulative tolerances inherent in the components of mechanisms of the prior art. The zenith adjustment mechanism utilizes a single adjustment screw (44) to align the magnetic head (33) such that the face is in parallel alignment relative to the tape path, along the transverse direction.

Abstract translation: 一种用于将磁头（33）倾斜到所需方位并调节磁头（33）的天顶的磁带头倾斜机构（20）。 方位倾斜机构使用由步进电动机（28）驱动的蜗轮（40）和蜗杆（17），为磁头（33）提供非常细的角度分辨率。 精细的角度分辨率可以写入非常高的轨道密度并提供强读取信号。 天顶调整机构消除了现有技术的机构部件中固有的累积公差。 天顶调整机构使用单个调节螺钉（44）来使磁头（33）对准，使得面沿着横向方向相对于带路径平行排列。

公开(公告)号：WO1996012274A1

公开(公告)日：1996-04-25

申请号：PCT/US1995012927

申请日：1995-10-10

Applicant: IOMEGA CORPORATION

Inventor： IOMEGA CORPORATION ,  JONES, David, E. ,  SONDEREGGER, Ralph

IPC: G11B05/55

CPC classification number: G11B25/043 ,  G11B5/40 ,  G11B5/5521

Abstract: A linear actuator for a removable cartridge magnetic disk drive (11) includes a center guide rail (28) on which the actuator carriage travels. Bushings (30, 32) and the motor coil (23) are spaced symmetrically with respect to the heads (18, 19) so that the center of mass, center of friction, center of force, and center of stiffness of the carriage are all aligned along the center rail. An outrigger travels on another rail to prevent rotation of the carriage.

Abstract translation: 用于可拆卸盒式磁盘驱动器（11）的线性致动器包括中心导轨（28），致动器滑架行进在该中心导轨上。 衬套（30,32）和电动机线圈（23）相对于头部（18,19）对称地间隔开，使得质心，摩擦中心，力的中心和滑架的刚度中心都是 沿着中心轨道对齐。 外伸支架在另一个导轨上行驶以防止滑架旋转。

公开(公告)号：WO1992016937A1

公开(公告)日：1992-10-01

申请号：PCT/US1992002257

申请日：1992-03-19

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  HARGARTEN, Jim ,  COUNTS, Gary ,  CHASE, Scott

IPC: G11B05/55

CPC classification number: G11B5/5547

Abstract: An actuator control loop for controlling head position (X Head 103) in a rotating media data storage system. The invention applies a compensation zero to a PES (Position Error Signal) prior to suumming (102) it with an integrator (112). This scheme reduces transients caused by the integrator (112) initialization step because the zero does not 'see' the integrator (112) initialization step. Transients that can result from coupling the integrator (112) initialization to the zero can cause overshoot and ringing in the actuator (X Head 103) increasing settling time and reducing system performance. The present invention also provides a first sample velocity compensation scheme (402) that removes the velocity correction factor (J) from the PES (Position Error Signal) signal in the first sample after a seek. This significantly reduces settling time and improves system performance.

公开(公告)号：WO1992016936A1

公开(公告)日：1992-10-01

申请号：PCT/US1992002116

申请日：1992-03-13

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  WILSON, Rosser, S.

IPC: G11B05/55

CPC classification number: G11B5/59616

Abstract: This invention relates to the detection in digital form of position error signals (PES) by employing a digital integrator (36) which comprises a register (48) and adder (46). A composite servo data is amplified by variable gain amplifier (22) and then undergoes low pass filtering (26) before being digitized by an analog to digital converter (ADC) (34). The digital integration is performed by accumulating a constant number of ADC samples in the register (48). Before being accumulated in the register (48), the sampled servo data is alternately multiplied by plus one or minus one for synchronous rectification, using an exclusive-OR gate (44) cascade interposed between the ADC output and adder input. Upon completion of accumulation of a prescribed number of ADC samples, the contents of the register (48) are transferred to a temporary buffer (30) pending interrogation by a servo controlled digital signal processor (DSP).

公开(公告)号：WO1992005543A1

公开(公告)日：1992-04-02

申请号：PCT/US1991006602

申请日：1991-09-17

Applicant: KADLEC, Ronald, James ,  FREDERICK, Thomas, James ,  KELLEY, Paul, Henry ,  WEILBACHER, Philip, Saxton

IPC: G11B05/55

CPC classification number: G11B5/59622 ,  G11B5/5534 ,  G11B5/5547 ,  G11B5/59616 ,  G11B5/5965 ,  G11B21/081 ,  G11B21/085 ,  G11B21/10

Abstract: A servo control system provides adaptive compensation for a variety of tracking and seek problems found in disk drives. The servo control system is ideally implemented in digital form for accuracy, speed and compactness. A first embodiment includes two modes, a tracking (or position) mode and a seek (or velocity) mode, each mode employing a variety of compensation functions. A second embodiment includes a single comprehensive control system which functions during both tracking and seek operations.

Abstract translation: 伺服控制系统为各种跟踪和寻找磁盘驱动器中存在的问题提供自适应补偿。 伺服控制系统理想地以数字形式实现精度，速度和紧凑性。 第一实施例包括两种模式，跟踪（或位置）模式和寻道（或速度）模式，每种模式采用各种补偿功能。 第二实施例包括在跟踪和寻找操作期间起作用的单个综合控制系统。