公开(公告)号：US07031105B2

公开(公告)日：2006-04-18

申请号：US10772959

申请日：2004-02-04

申请人： Seong Hoon Kim ,  Tae Yeon Hwang ,  Tho Pham

发明人： Seong Hoon Kim ,  Tae Yeon Hwang ,  Tho Pham

IPC分类号： G11B33/14

CPC分类号： G11B33/08

摘要： The inventors have discovered that aerodynamic forces contribute to disk fluttering. If the flow of air about these disk surfaces is unstable, the resulting aerodynamic forces can mechanically excite the disk surfaces, causing fluttering. The invention includes media enclosures constraining such aerodynamic effects, methods of making disk drives with these enclosures, the disk drives. This includes disk drives of at most 13 millimeters in height.

公开(公告)号：US07031095B2

公开(公告)日：2006-04-18

申请号：US10903720

申请日：2004-07-29

申请人： Young-Hoon Kim ,  Sang Hoon Chu ,  Seong-Woo Kang ,  Dong-Ho Oh ,  Yun-Sik Han ,  Tae Yeon Hwang

发明人： Young-Hoon Kim ,  Sang Hoon Chu ,  Seong-Woo Kang ,  Dong-Ho Oh ,  Yun-Sik Han ,  Tae Yeon Hwang

IPC分类号： G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/596

摘要： The invention applies to servo controllers for at least the voice coil motor of a hard disk drive. Today, many control algorithms require 80 to 90 percent of the sampling period to complete their calculation of the next control, making computation time delay no longer negligible. The invention accommodates the transport delay, such as computation time delay, into the state estimator and into the whole control system. Experimental results using a commercial hard drive, as well as simulation results, show that the invention's method effectively improves the hard disk drive control system stability by increasing the phase margin and gain margin. The invention includes the method of operating the servo-controller, as well as the apparatus implementing that method. The invention also includes hard disk drives containing servo-controllers implementing the method, and program systems residing in accessibly coupled memory to a computer within the servo controller implementing the method.

公开(公告)号：US20050007702A1

公开(公告)日：2005-01-13

申请号：US10619163

申请日：2003-07-10

申请人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

发明人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

IPC分类号： G11B21/02 ,  G11B5/55 ,  G11B5/48

CPC分类号： G11B5/5552 ,  G11B5/4873 ,  G11B5/6011

摘要： Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms for moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly. An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention.

摘要翻译： 提供了改进的头万向节组件，减少了硬盘驱动器中的TMR（跟踪错位）。 这些头万向架组件与当代头万向架组件一样机械简单，在平盘表面上支撑平行的飞行滑块，并减少由磁盘振动引起的TMR。 与其他已知方法相比，其轨迹密度和转速可比较容易构建，更可靠，成本更低。 改进的头万向节组件包括三组机构，用于当盘表面平坦时平行于盘表面移动滑块，并且当盘表面弯曲时使滑块朝向轨道径向移动。 第一和第三机构以及第二和第三机构可以一起用在头部万向架组件中。 改进和独特的伺服控制器方案导致PES性能的总体改进，特别是当应用于采用本发明的TMR减小机构的硬盘驱动器时。 伺服控制器在磁盘振动频率范围内取消增益，有利于提高低频干扰的抑制。 当应用于具有本发明的TMR减少机制的硬盘驱动器时，这导致最低的PES统计。

公开(公告)号：US06920018B2

公开(公告)日：2005-07-19

申请号：US10618524

申请日：2003-07-10

申请人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

发明人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

IPC分类号： G11B5/56 ,  G11B5/596 ,  G11B5/60

CPC分类号： G11B5/59627

摘要： Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR' induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly.An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention.

摘要翻译： 提供了改进的头万向节组件，减少了硬盘驱动器中的TMR（跟踪错位）。 这些头万向架组件与当代头万向架组件一样机械简单，在平盘表面上支撑平行的滑动滑块，并减少由磁盘振动引起的TMR。 与其他已知方法相比，其轨迹密度和转速可比较容易构建，更可靠，成本更低。 改进的头万向节组件包括三组机构，当盘表面平坦时，滑块平行于盘表面移动，并且当盘表面弯曲时，将滑块径向移动到轨道。 第一和第三机构以及第二和第三机构可以一起用在头部万向架组件中。 改进和独特的伺服控制器方案导致PES性能的总体改进，特别是当应用于采用本发明的TMR减小机构的硬盘驱动器时。 伺服控制器在磁盘振动频率范围内取消增益，有利于提高低频干扰的抑制。 当应用于具有本发明的TMR减少机制的硬盘驱动器时，这导致最低的PES统计。

公开(公告)号：US06771458B2

公开(公告)日：2004-08-03

申请号：US10100960

申请日：2002-03-18

申请人： Seong Hoon Kim ,  Tae Yeon Hwang ,  Tho Pham

发明人： Seong Hoon Kim ,  Tae Yeon Hwang ,  Tho Pham

IPC分类号： G11B3314

CPC分类号： G11B33/08

摘要： The inventors have discovered that aerodynamic forces contribute to disk fluttering. If the flow of air about these disk surfaces is unstable, the resulting aerodynamic forces can mechanically excite the disk surfaces, causing fluttering. The invention includes media enclosures constraining such aerodynamic effects, methods of making disk drives with these enclosures, the disk drives. This includes disk drives of at most 13 millimeters in height.

摘要翻译： 本发明人已经发现，空气动力引起磁盘振动。 如果这些盘表面周围的空气流不稳定，则产生的空气动力可以机械地激励磁盘表面，引起振动。 本发明包括限制这种空气动力效应的介质外壳，用这些外壳制造磁盘驱动器的方法，磁盘驱动器。 这包括高达13毫米高的磁盘驱动器。

公开(公告)号：US07595964B2

公开(公告)日：2009-09-29

申请号：US11599801

申请日：2006-11-14

申请人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

发明人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

IPC分类号： G11B5/60

CPC分类号： G11B5/5552 ,  G11B5/4873 ,  G11B5/6011

摘要： Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms for moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly. An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention.

摘要翻译： 提供了改进的头万向节组件，减少了硬盘驱动器中的TMR（跟踪错位）。 这些头万向架组件与当代头万向架组件一样机械简单，在平盘表面上支撑平行的飞行滑块，并减少由磁盘振动引起的TMR。 与其他已知方法相比，其轨迹密度和转速可比较容易构建，更可靠，成本更低。 改进的头万向节组件包括三组机构，用于当盘表面平坦时平行于盘表面移动滑块，并且当盘表面弯曲时使滑块朝向轨道径向移动。 第一和第三机构以及第二和第三机构可以一起用在头部万向架组件中。 改进和独特的伺服控制器方案导致PES性能的总体改进，特别是当应用于采用本发明的TMR减小机构的硬盘驱动器时。 伺服控制器在磁盘振动频率范围内取消增益，有利于提高低频干扰的抑制。 当应用于具有本发明的TMR减少机制的硬盘驱动器时，这导致最低的PES统计。

公开(公告)号：US07420764B2

公开(公告)日：2008-09-02

申请号：US11397254

申请日：2006-04-03

申请人： Young-Hoon Kim ,  Sang Hoon Chu ,  Seong-Woo Kang ,  Dong-Ho Oh ,  Yun-Sik Han ,  Tae Yeon Hwang

发明人： Young-Hoon Kim ,  Sang Hoon Chu ,  Seong-Woo Kang ,  Dong-Ho Oh ,  Yun-Sik Han ,  Tae Yeon Hwang

IPC分类号： G11B5/596

CPC分类号： G11B5/5547 ,  G11B5/596

摘要： The invention applies to servo controllers for at least the voice coil motor of a hard disk drive. Today, many control algorithms require 80 to 90 percent of the sampling period to complete their calculation of the next control, making computation time delay no longer negligible. The invention accommodates the transport delay, such as computation time delay, into the state estimator and into the whole control system. Experimental results using a commercial hard drive, as well as simulation results, show that the invention's method effectively improves the hard disk drive control system stability by increasing the phase margin and gain margin. The invention includes the method of operating the servo-controller, as well as the apparatus implementing that method. The invention also includes hard disk drives containing servo-controllers implementing the method, and program systems residing in accessibly coupled memory to a computer within the servo controller implementing the method.

摘要翻译： 本发明适用于至少用于硬盘驱动器的音圈电机的伺服控制器。 今天，许多控制算法需要80％到90％的采样周期来完成下一个控制的计算，使计算时间延迟不再可忽略。 本发明将诸如计算时间延迟的传输延迟适应到状态估计器中并进入整个控制系统。 使用商业硬盘驱动器的实验结果以及仿真结果表明，本发明的方法通过增加相位裕度和增益裕度来有效提高硬盘驱动器控制系统的稳定性。 本发明包括操作伺服控制器的方法以及实现该方法的装置。 本发明还包括实现该方法的包含伺服控制器的硬盘驱动器，以及驻留在可访问耦合存储器中的程序系统，其中所述计算机实现该方法的伺服控制器内的计算机。

公开(公告)号：US20050207055A1

公开(公告)日：2005-09-22

申请号：US11126462

申请日：2005-05-10

申请人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

发明人： Dong-Ho Oh ,  Seong-Woo Kang ,  Yun-Sik Han ,  Young-Hoon Kim ,  Myeong-Eop Kim ,  Tae-Yeon Hwang ,  Jae-Won Kim

IPC分类号： G11B21/10 ,  G11B5/48 ,  G11B5/55 ,  G11B5/596 ,  G11B21/02

CPC分类号： G11B5/4833 ,  G11B5/4826 ,  G11B5/5552 ,  G11B5/596

摘要： An improved and distinctive servo-controller scheme resulting in an overall improvement in PES performance, particularly when applied to hard disk drives employing the invention's TMR reduction mechanisms. The servo-controllers trade off gain in the disk vibration frequency range, in favor of, increased rejection of low frequency disturbances. This leads to the lowest PES statistics, when applied to hard disk drives with the TMR reduction mechanisms of the invention. Improved head gimbal assemblies reducing TMR (Track Mis-Registration) in a hard disk drive are provided. These head gimbal assemblies are as mechanically simple as contemporary head gimbal assemblies, support parallel flying sliders over flat disk surfaces, and reduce TMR induced by disk vibration. They are easier to build, more reliable, and cost less to make, than other known approaches at comparable track densities and rotational rates. The improved head gimbal assemblies include three sets of mechanisms moving the slider parallel the disk surface, when the disk surface is flat, and radially moving the slider toward the track, when the disk surface is bent. The first and third mechanisms as well as the second and third mechanisms can be used together in a head gimbal assembly.

摘要翻译： 改进和独特的伺服控制器方案导致PES性能的总体改进，特别是当应用于采用本发明的TMR减小机构的硬盘驱动器时。 伺服控制器在磁盘振动频率范围内取消增益，有利于提高低频干扰的抑制。 当应用于具有本发明的TMR减少机制的硬盘驱动器时，这导致最低的PES统计。 提供了改进的头万向节组件，减少了硬盘驱动器中的TMR（跟踪错位）。 这些头万向架组件与当代头万向架组件一样机械简单，在平盘表面上支撑平行的飞行滑块，并减少由磁盘振动引起的TMR。 与其他已知方法相比，其轨迹密度和转速可比较容易构建，更可靠，成本更低。 改进的头万向节组件包括三组机构，当盘表面平坦时，滑块平行于盘表面移动，并且当盘表面弯曲时，将滑块径向移动到轨道。 第一和第三机构以及第二和第三机构可以一起用在头部万向架组件中。

公开(公告)号：US06947252B2

公开(公告)日：2005-09-20

申请号：US09850958

申请日：2001-05-07

申请人： Seong-Woo Kang ,  Tae-Yeon Hwang ,  Yun-Dik Han ,  Young Son ,  Woocheol Jeong

发明人： Seong-Woo Kang ,  Tae-Yeon Hwang ,  Yun-Dik Han ,  Young Son ,  Woocheol Jeong

IPC分类号： G11B5/60 ,  G11B21/21 ,  G11B33/08

CPC分类号： G11B5/6005 ,  G11B21/21

摘要： A hard disk drive that includes a wave stringer. The wave stringer can attenuate energy which propagates through a base plate of the disk drive. The wave stringer may be designed by initially analyzing propagation patterns of both acoustic and shock waves applied to the drive. The wave stringer is then designed, constructed and assembled to the disk drive to attenuate critical frequencies at weak points of the disk drive. The wave stringer may have a plurality of ribs designed to vary the mechanical impedance of the drive to attenuate the propagated energy.

摘要翻译： 一个包含波纹的硬盘驱动器。 波纹管可以衰减通过磁盘驱动器的基板传播的能量。 可以通过初始分析施加到驱动器的声波和冲击波的传播模式来设计波形纵梁。 然后将波形纵梁设计，构造和组装到磁盘驱动器，以衰减磁盘驱动器的弱点处的临界频率。 波形纵梁可以具有设计成改变驱动器的机械阻抗以衰减传播能量的多个肋。

公开(公告)号：US06215219B1

公开(公告)日：2001-04-10

申请号：US09358391

申请日：1999-07-20

申请人： Tae-yeon Hwang

发明人： Tae-yeon Hwang

IPC分类号： F16C3204

CPC分类号： F16C39/063 ,  Y10T29/49639

摘要： A bearing system and a spindle motor assembly adopting the same are provided. The bearing system includes a lower base on which a fixed shaft is installed, a cylindrical body fit on the fixed shaft, first and second magnetic bodies installed on the upper and lower ends of the cylindrical body, respectively; a third magnetic body installed so as to face the second magnetic body on the lower end of the cylindrical body, a fourth magnetic body facing the first magnetic body on the upper end of the cylindrical body at a predetermined space, and an upper base to which the fourth magnetic body is fixed and which is fixed to the upper portion of the fixed shaft. Accordingly, a vibration source which generates vibration during rotation due to defects of ball bearing components and cumulative processing errors caused upon conventional ball bearing support is removed by axially and radially supporting the rotating body in a non-contact way, thereby achieving a super-high rotation speed and super-accurate rotation of the rotating body.

摘要翻译： 提供了一种轴承系统和采用该轴承系统的主轴电动机组件。 轴承系统包括：固定轴安装在下底座上，圆筒体装配在固定轴上，第一和第二磁体分别安装在圆柱体的上端和下端; 安装成与筒体下端的第二磁性体相对的第三磁体，在预定的空间上与圆柱体的上端面对第一磁性体的第四磁性体， 第四磁性体固定并固定在固定轴的上部。 因此，由于滚珠轴承部件的缺陷产生振动的振动源和传统的滚珠轴承支撑件引起的累积加工误差，通过以非接触的方式轴向和径向地支撑旋转体而被去除，从而达到超高 旋转速度和旋转体的超精确旋转。