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51. 发明授权

US07319570B2 Random vibration and shock compensator using a disturbance observer 有权
标题翻译：使用扰动观测器的随机振动和冲击补偿器
公开(公告)号：US07319570B2
公开(公告)日：2008-01-15
申请号：US11230168
申请日：2005-09-19
申请人： QingWei Jia , MingZhong Ding , KianKeong Ooi , Jianyi Wang
发明人： QingWei Jia , MingZhong Ding , KianKeong Ooi , Jianyi Wang
IPC分类号： G11B5/596
CPC分类号： G11B5/59605 , G11B5/5582
摘要： A data storage device adapted to compensate for physical disturbances has a storage medium, a read-write mechanism positionable relative to the storage medium, and a disturbance observer. The read-write mechanism is adapted to read and write data. The disturbance observer compensates a position of the read-write mechanism according to low-frequency components of physical disturbances.
摘要翻译：适于补偿物理干扰的数据存储装置具有存储介质，相对于存储介质定位的读写机构和干扰观察器。读写机制适用于读写数据。干扰观测器根据物理扰动的低频分量补偿读写机构的位置。

52. 发明授权

US06859341B2 Method and apparatus for feedforward repeatable runout compensation in a selected frequency range 失效
标题翻译：用于所选频率范围内的前馈可重复跳动补偿的方法和装置
公开(公告)号：US06859341B2
公开(公告)日：2005-02-22
申请号：US10396074
申请日：2003-03-25
申请人： ShuangQuan Min , MingZhong Ding , KianKeong Ooi
发明人： ShuangQuan Min , MingZhong Ding , KianKeong Ooi
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： For runout compensation in a data handling system, a servo feedback loop is configured to control a head position relative to a corresponding disc surface. Operation of the feedback loop is complicated by a repeatable error in the head position having energy at harmonics of the spindle rotation frequency. Also, the feedback loop has a gain with a frequency sensitivity in a target frequency range. A feedforward controller generates an output injected into the feedback loop based on an error-indicative input. This defines a feedforward closed-loop transfer function, between the loop output and the feedforward controller input. The feedforward controller prevents the frequency sensitivity from substantially varying the feedforward closed-loop transfer function gain and phase within the target frequency range, thus reducing computational burden.
摘要翻译：对于数据处理系统中的跳动补偿，伺服反馈回路被配置为控制相对于相应盘表面的打印头位置。在主轴旋转频率的谐波处具有能量的头部位置的可重复误差，反馈环路的操作变得复杂。此外，反馈环路具有在目标频率范围内具有频率灵敏度的增益。前馈控制器基于指示错误的输入产生注入到反馈回路中的输出。这定义了在环路输出和前馈控制器输入之间的前馈闭环传递函数。前馈控制器防止频率灵敏度基本上改变了目标频率范围内的前馈闭环传递函数增益和相位，从而减少了计算负担。

53. 发明申请

US20050034539A1 Motor torque variation compensation 审中-公开
标题翻译：电机转矩变动补偿
公开(公告)号：US20050034539A1
公开(公告)日：2005-02-17
申请号：US10814016
申请日：2004-03-31
申请人： LeeLing Tan , MingZhong Ding , KianKeong Ooi , JianYi Wang
发明人： LeeLing Tan , MingZhong Ding , KianKeong Ooi , JianYi Wang
IPC分类号： G11B5/55 , G11B21/08 , H02P25/02 , H02P5/34
CPC分类号： G11B5/5526 , G11B21/083 , H02P25/034
摘要： Method and apparatus for compensating variations in motor torque in a control system that employs a motor to accelerate a control object, such as a data transducing head in a data storage device. During acceleration of the control object, a plurality of distances successively traveled by the control object are measured, and the measured distances are combined to compensate for said variations in motor torque. Preferably, a constant control input is applied to accelerate the control object at a constant rate of acceleration less than a maximum rate of acceleration that can be obtained by the motor. A coarse adjustment routine is preferably applied to arrive at a first compensation value that compensates for said variations at a first resolution, after which a fine adjustment routine is performed using the first compensation value to arrive at the final compensation value at a second resolution greater than the first resolution.
摘要翻译：用于补偿使用电动机来加速诸如数据存储装置中的数据转换头的控制对象的控制系统中的电动机转矩变化的方法和装置。在控制对象的加速期间，测量由控制对象相继行进的多个距离，并且组合所测量的距离以补偿所述电动机转矩的变化。优选地，施加恒定的控制输入以以小于由电动机可以获得的最大加速速率的恒定加速度加速控制对象。优选地应用粗调程序以获得以第一分辨率补偿所述变化的第一补偿值，之后使用第一补偿值执行微调程序，以大于第二分辨率的第二分辨率得到最终补偿值第一个决议。

54. 发明授权

US06710965B2 Phase-advanced filter for robust resonance cancellation 有权
标题翻译：相位先进滤波器，用于鲁棒谐振消除
公开(公告)号：US06710965B2
公开(公告)日：2004-03-23
申请号：US10055110
申请日：2002-01-22
申请人： Mingzhong Ding , KeXiu Liu , KianKeong Ooi
发明人： Mingzhong Ding , KeXiu Liu , KianKeong Ooi
IPC分类号： G11B5596
CPC分类号： G11B5/5556 , G11B5/59622 , G11B7/0941 , G11B21/085 , G11B21/106 , G11B33/08
摘要： A filter for attenuating a resonance mode without substantial phase margin loss. The filter comprises a transfer function having an additional pole, such that the phase of the input signal is advanced. The phase-advanced filter substantially attenuates all frequencies above a selected center frequency while avoiding substantial phase margin loss.
摘要翻译：用于衰减谐振模式而没有实质相位裕度损失的滤波器。滤波器包括具有附加极点的传递函数，使得输入信号的相位提前。相位超前滤波器基本上衰减所选择的中心频率以上的所有频率，同时避免实质的相位裕度损失。

55. 发明授权

US06687065B2 Resonance screen with varying frequency and controllable gain booster 失效
标题翻译：具有变化频率和可控增益增强器的共振屏
公开(公告)号：US06687065B2
公开(公告)日：2004-02-03
申请号：US09778472
申请日：2001-02-07
申请人： LeeLing Tan , MingZhong Ding , WeeMeng Yio , KianKeong Ooi , KokHoe Chia
发明人： LeeLing Tan , MingZhong Ding , WeeMeng Yio , KianKeong Ooi , KokHoe Chia
IPC分类号： G11B2736
CPC分类号： G11B27/36 , G11B21/106 , G11B2220/20
摘要： A disc drive includes a base and a disc rotatably attached to the base. The disc drive also includes an actuator assembly rotatably attached to said base and a device for moving the actuator assembly. The actuator assembly includes an actuator arm and a transducer head in a transducing relationship with respect to the disc. The transducer is attached to the actuator arm. A method for screening disc drives for resonant frequencies associated with the actuator arm includes the steps of following a track within the disc drive, and selectively boosting the servo control signal. The method further includes a step of monitoring a position error signal from a transducer attached to an actuator arm of a disc drive. The position error signal is monitored by filtering the position error signal using a bandpass filter. Boosting the servo control loop includes tuning the magnitude of the booster signal gain.
摘要翻译：盘驱动器包括基座和可旋转地附接到基座的盘。盘驱动器还包括可旋转地附接到所述基座的致动器组件和用于移动致动器组件的装置。致动器组件包括致动器臂和相对于盘的换能关系的换能器头。传感器连接到执行器臂。用于筛选与致动器臂相关联的谐振频率的盘驱动器的方法包括跟随盘驱动器内的轨道并且选择性地升高伺服控制信号的步骤。该方法还包括监测来自附接到盘驱动器的致动器臂的换能器的位置误差信号的步骤。通过使用带通滤波器对位置误差信号进行滤波来监视位置误差信号。升压伺服控制回路包括调整升压信号增益的幅度。

56. 发明授权

US06636375B1 Seek in a disc drive with nonlinear pivot friction 失效
标题翻译：在具有非线性枢轴摩擦的磁盘驱动器中寻求
公开(公告)号：US06636375B1
公开(公告)日：2003-10-21
申请号：US09584261
申请日：2000-05-31
申请人： MingZhong Ding , KianKeong Ooi , Louis Seng Hong Pang , Ricky Wei Watt Yeo , YangQuan Chen
发明人： MingZhong Ding , KianKeong Ooi , Louis Seng Hong Pang , Ricky Wei Watt Yeo , YangQuan Chen
IPC分类号： G11B5596
CPC分类号： G11B5/5556
摘要： According to one embodiment of the present invention, a disc drive includes a disc and a transducer supported by an actuator assembly that is accelerated by controlling current in a voice coil. The disc drive controls a position of the transducer over a present track on the disc in a track-and-follow mode, generates an estimated bias current to be applied to the voice coil to balance a bias on the actuator assembly when the transducer is over the present track, starts a movement of the transducer toward a target track in a seek mode, enters the estimated bias current into a bias table if an immediately preceding movement of the transducer in the seek mode was longer than a seek length boundary such that nonlinear friction in a pivot in the actuator assembly is less substantial, and applies a bias current to the voice coil calculated based on a bias current entry in the bias table during the seek mode.
摘要翻译：根据本发明的一个实施例，盘驱动器包括盘和由致动器组件支撑的换能器，其通过控制音圈中的电流来加速。磁盘驱动器以跟踪和跟随模式控制盘上的当前磁道上的传感器的位置，产生要施加到音圈的估计偏置电流，以在传感器结束时平衡致动器组件上的偏置当前轨道在寻道模式下开始朝向目标轨迹的移动，如果在寻找模式中的换能器的紧接在前的移动长于搜索长度边界，则将估计的偏置电流输入到偏置表中，使得非线性在致动器组件中的枢轴中的摩擦较小，并且在寻道模式期间，基于偏置台中的偏置电流入口计算出的偏置电流到音圈。

57. 发明授权

US06437936B1 Repeatable runout compensation using a learning algorithm with scheduled parameters 有权
标题翻译：使用具有调度参数的学习算法可重复的跳动补偿
公开(公告)号：US06437936B1
公开(公告)日：2002-08-20
申请号：US09489532
申请日：2000-01-21
申请人： YangQuan Chen , LeeLing Tan , KianKeong Ooi , Qiang Bi , KokHiang Cheong
发明人： YangQuan Chen , LeeLing Tan , KianKeong Ooi , Qiang Bi , KokHiang Cheong
IPC分类号： G11B5596
CPC分类号： G11B5/59627
摘要： A method and apparatus for compensating for written-in repeatable runout in a disc drive is provided. Compensation values are determined through an iterative learning process in which parameters of the learning process such as learning gain, servo loop gain, etc. are functions of the iteration number. The learning process also employs a nominal double integrator model of an actuator of the disc storage system. The learning process is also a function of a zero-phase low-pass filter.
摘要翻译：提供了用于补偿盘驱动器中的可写入可重复跳动的方法和装置。通过迭代学习过程来确定补偿值，其中诸如学习增益，伺服循环增益等学习过程的参数是迭代次数的函数。学习过程还采用盘存储系统的执行器的标称双积分器模型。学习过程也是零相位低通滤波器的一个功能。

58. 发明授权

US06628471B1 Detection and cancellation of cage frequency using the clock head in a servowriter 失效
标题翻译：使用伺服驱动器中的时钟头来检测和消除笼式频率
公开(公告)号：US06628471B1
公开(公告)日：2003-09-30
申请号：US09798801
申请日：2001-03-02
申请人： ShuangQuan Min , Ricky WeiWatt Yeo , KianKeong Ooi , Xiong Liu , BengWee Quak , ChiapHeok Ang
发明人： ShuangQuan Min , Ricky WeiWatt Yeo , KianKeong Ooi , Xiong Liu , BengWee Quak , ChiapHeok Ang
IPC分类号： G11B2102
CPC分类号： G11B5/59627 , G11B5/59633
摘要： The magnitude and frequency of runout due to vibration of the cage of the spindle motor is detected. A plurality of servo patterns are written to a reference track having a clock pattern on the disc, and the plurality of servo patterns are then read over a plurality of revolutions of the disc using a clock head. The magnitude of position error of the clock head relative to the reference track is identified for each of the read servo patterns. The magnitude and frequency of runout due to cage vibration is identified from the position errors. Servo patterns are written to user tracks on the disc by identifying periods of low magnitude runout due to cage vibration, and writing the servo patterns to the user track during those periods of low magnitude runout.
摘要翻译：检测到由主轴电机的保持架振动引起的跳动的幅度和频率。将多个伺服模式写入到具有盘上的时钟图案的参考轨道，然后使用时钟头在盘的多个转圈上读取多个伺服模式。为每个读取的伺服模式识别时钟磁头相对于参考磁道的位置误差的大小。从位置误差中确定由于保持架振动引起的跳动的幅度和频率。通过识别由于笼振动引起的低幅度跳动的周期，并且在低幅度跳动期间将伺服模式写入用户轨迹，将伺服模式写入盘上的用户轨道。

59. 发明申请

US20080048595A1 Active brake for spindle motor 审中-公开
标题翻译：主轴电机主动制动
公开(公告)号：US20080048595A1
公开(公告)日：2008-02-28
申请号：US11507748
申请日：2006-08-22
申请人： JiaHong Shu , Tze Ming Jimmy Pang , Larry Robert Hedding , KianKeong Ooi , JuneChristian Ang , Kwee Teck Say , Danny Joe Kastler
发明人： JiaHong Shu , Tze Ming Jimmy Pang , Larry Robert Hedding , KianKeong Ooi , JuneChristian Ang , Kwee Teck Say , Danny Joe Kastler
IPC分类号： H02P3/00
CPC分类号： G11B19/20 , G11B19/04
摘要： A reverse torque, forward commutation motor driver system for a phased motor rapidly decelerates or “brakes” the motor by exciting, in sequence, a complementary excitation signal in each normal commutation state of the forward state machine, thereby providing an active braking effect. After active braking reduces the rotational velocity of the motor below a threshold, a dynamic braking technique can replace the active braking, wherein high-side drivers are set to an opposite voltage as compared to low-side drivers.
摘要翻译：用于相位电动机的反向扭矩正向换向电动机驱动器系统通过在前进状态机的每个正常换向状态中依次激励一个互补的激励信号来快速减速或“制动”电动机，由此提供主动的制动效果。在主动制动之后，将电动机的转速降低到阈值以下，动态制动技术可以取代主动制动，其中与低侧驱动器相比，高侧驱动器被设置为相反的电压。

60. 发明授权

US06751036B2 Tuning track density for data storage device 有权
标题翻译：调整数据存储设备的磁道密度
公开(公告)号：US06751036B2
公开(公告)日：2004-06-15
申请号：US09902428
申请日：2001-07-10
申请人： Beng Wee Quak , KokHoe Chia , Kwee Teck Say , KianKeong Ooi , Soon Wah Leow , Song Wee Teo
发明人： Beng Wee Quak , KokHoe Chia , Kwee Teck Say , KianKeong Ooi , Soon Wah Leow , Song Wee Teo
IPC分类号： G11B509
CPC分类号： G11B27/36 , G11B5/012 , G11B20/1816 , G11B33/10 , G11B2005/001 , G11B2005/0013 , G11B2220/20
摘要： A data storage device has a plurality of head/surface combinations with different data track densities on at least two surfaces. A minimum head quality is established for the data storage apparatus. Head quality is identified for each of the heads at each of a plurality of track densities. A tuned track density is selected for each surface based on the track density that corresponds to a head quality.
摘要翻译：数据存储装置具有在至少两个表面上具有不同数据磁道密度的多个头/表面组合。为数据存储装置建立最小的头部质量。在多个磁道密度中的每一个处识别每个磁头的磁头质量。基于对应于头部质量的轨道密度，为每个表面选择调谐轨道密度。

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