公开(公告)号：US20050168862A1

公开(公告)日：2005-08-04

申请号：US11008571

申请日：2004-12-10

Applicant: Jun Jeong

Inventor： Jun Jeong

IPC: G11B21/12 ,  G11B5/55 ,  G11B21/02 ,  G11B21/10 ,  H02P5/00 ,  H02P25/06

CPC classification number: G11B5/5534

Abstract: A method of calibrating parameters of an apparatus for measuring a back electromotive force (BEMF) of a voice coil motor (VCM) for moving a head on a disk, the apparatus including the VCM having a coil resistance Rm, a coil inductance Lm, and a sensing resistance Rs, including: controlling the VCM to sequentially perform a track following operation of the head on a first track, a transferring operation of the head from the first track to a second track, and a track following operation of the head on the second track; sampling a differential voltage Vadc between a voltage across the VCM and a voltage across the sensing resistance Rs and a VCM driving current Im during the transferring operation; calculating a slope S based on a ratio of a first integration value to a second integration value, where the first integration value is obtained by integrating a product of the sampled differential voltage Vadc and the VCM driving current Im during the transferring operation, the second integration value being obtained by integrating a square of the VCM driving current Im during the transferring operation, the slope S being defined by the equation S=Rm−Gb×Rs, Gb being a gain of an amplifier for amplifying the voltage across the sensing resistance Rs; and calibrating the parameters of the apparatus using the slope S.

Abstract translation: 一种校准用于测量用于在盘上移动磁头的音圈电机（VCM）的反电动势（BEMF）的装置的参数的方法，该装置包括具有线圈电阻Rm，线圈电感Lm的VCM和 感测电阻Rs，包括：控制VCM在第一轨道上依次执行磁头跟随操作，磁头从第一磁道到第二磁道的传送操作以及磁头在磁道上的跟踪操作 第二轨 在传送操作期间，在VCM两端的电压和感测电阻Rs两端的电压和VCM驱动电流Im之间对差分电压Vadc进行采样; 基于第一积分值与第二积分值的比率来计算斜率S，其中通过在转印操作期间积分采样的差分电压Vadc和VCM驱动电流Im的乘积来获得第一积分值，第二积分 值是通过在传送操作期间积分VCM驱动电流Im的平方而获得的，斜率S由等式S = Rm-GbxRs定义，Gb是用于放大感测电阻Rs两端的电压的放大器的增益; 并使用斜率S校准装置的参数。

公开(公告)号：US20050156473A1

公开(公告)日：2005-07-21

申请号：US11025945

申请日：2005-01-03

Applicant: Asano Tosiya

Inventor： Asano Tosiya

IPC: H01L21/027 ,  H02K23/60 ,  H02K41/00 ,  H02K41/03 ,  H02P5/00 ,  H02P25/06

CPC classification number: H02P25/06

Abstract: Upon initialization of the polyphase linear motor having a mover and a stator, there are a first step of selecting any or all of a plurality of coil phases to supply the selected coil phase(s) with a first constant current so as to drive the mover to a first electromechanical stability point, a second step of supplying a second constant current to the same or different coil phase(s) as or from those selected for supplying the first constant current to drive the mover to a second electromechanical stability point, and a third step of supplying each coil phase with a predetermined current according to the second electromechanical stability point to drive the mover to a predetermined reference point.

Abstract translation: 在具有移动器和定子的多相线性电动机的初始化时，存在第一步骤，选择多个线圈相中的任何一个或全部，以将第一恒定电流提供给所选择的线圈相，以驱动移动器 向第一机电稳定点提供第二步骤，将第二恒定电流提供给与选择用于提供第一恒定电流以将驱动器移动到第二机电稳定点的那些相同或不同的线圈相位，以及 根据第二机电稳定点向每个线圈相位提供预定电流的第三步骤，以将移动器驱动到预定参考点。

公开(公告)号：US20050116548A1

公开(公告)日：2005-06-02

申请号：US10882258

申请日：2004-07-02

Applicant: Yutaka Oisugi ,  Hideaki Sato

Inventor： Yutaka Oisugi ,  Hideaki Sato

IPC: G01B7/00 ,  H02K11/00 ,  H02K41/02 ,  H02K41/03 ,  H02K41/035 ,  H02P25/06 ,  H02K41/00 ,  H02P1/00 ,  H02P3/00

CPC classification number: H02P25/06 ,  H02K41/03 ,  H02K2201/18

Abstract: A planar motor permits a thinner design, controlled vibration, and highly accurate positioning by disposing X-axis and Y-axis coreless type linear motors on the same plane without using an expensive linear guide and by incorporating high-accuracy capacitance displacement sensors in X and Y directions. Two pairs of permanent magnets are disposed such that they are respectively orthogonalized with respect to two axes that are orthogonalized with each other on a movable stage and that they generate magnetic fluxes in a direction perpendicular to a surface of the movable stage. Furthermore, the permanent magnets of one pair are disposed symmetrically to each other about one of the two axes, while those of the other pair are disposed symmetrically to each other about the other axis. Two pairs of coils are provided such that they oppose and match the two pairs of permanent magnets. A cross-shaped common electrode is installed to the movable stage and disposed such that it opposes a fixed electrode composed of two electrodes disposed on a fixed electrode base. Displacements of the movable stage can be determined from changes in capacitance of capacitors formed by the cross-shaped common electrode and the fixed electrodes.

公开(公告)号：US06859257B2

公开(公告)日：2005-02-22

申请号：US10346107

申请日：2003-01-17

Applicant: Nobushige Korenaga

Inventor： Nobushige Korenaga

IPC: G01L5/00 ,  G03F7/20 ,  H01L21/027 ,  H01L21/68 ,  H02K16/00 ,  H02K41/03 ,  H02K41/035 ,  H02P25/06 ,  G03B27/42 ,  G03B27/32 ,  G03B27/62 ,  G05F1/00

CPC classification number: G03F7/70758 ,  G03F7/70725 ,  H02K16/00 ,  H02K41/03 ,  H02K41/0354 ,  H02K2201/18

Abstract: A stage system includes a movable stage, a force applying mechanism for applying, by use of an electromagnet, a force to the stage in a direction of a magnetic flux generated by the electromagnet, a moving mechanism for moving the electromagnet in the direction, and a controller for controlling one of the magnetic force of the electromagnet and a generated force thereof.

Abstract translation: 舞台系统包括可动台，用于使用电磁铁在电磁铁产生的磁通方向上向舞台施加力的施力机构，用于沿该方向移动电磁铁的移动机构，以及 用于控制电磁体的磁力之一的控制器及其产生的力。

公开(公告)号：US20050031470A1

公开(公告)日：2005-02-10

申请号：US10790700

申请日：2004-03-03

Applicant: Kwang Lee

Inventor： Kwang Lee

IPC: F04B17/04 ,  F04B35/04 ,  F04B49/06 ,  H02P25/06 ,  F04B49/00

CPC classification number: F04B35/045 ,  F04B49/065 ,  F04B2201/0202 ,  F04B2203/0401 ,  F04B2203/0402

Abstract: A linear compressor and apparatus to control the linear compressor are provided which allows a frequency of a drive current supplied to a drive motor to synchronize with a resonance frequency varying according to a load fluctuation, in real time, thus obtaining a maximum efficiency of the linear compressor. The linear compressor includes a drive motor, a piston reciprocating by the drive motor and a control unit generating a reference current having a phase difference of 90° with respect to a displacement waveform of the piston and a frequency equal to the displacement waveform of the piston, and controls a drive current supplied to the drive motor to synchronize with a resonance frequency of the piston by synchronizing the drive current with the reference current.

Abstract translation: 提供了一种用于控制线性压缩机的线性压缩机和装置，其允许提供给驱动电动机的驱动电流的频率与根据负载波动变化的谐振频率实时同步，从而获得线性压缩机的最大效率 压缩机。 线性压缩机包括驱动电动机，由驱动电动机往复运动的活塞和控制单元，该控制单元生成相对于活塞的位移波形具有90°的相位差的参考电流，并且频率等于活塞的位移波形 并且通过使驱动电流与参考电流同步来控制提供给驱动电动机的驱动电流与活塞的共振频率同步。

公开(公告)号：US5973459A

公开(公告)日：1999-10-26

申请号：US665498

申请日：1996-06-18

Applicant: Hiroshi Itoh

Inventor： Hiroshi Itoh

IPC: B23Q5/28 ,  B60L15/00 ,  B65G54/02 ,  H01L21/677 ,  H01L21/68 ,  H02K41/03 ,  H02P25/06 ,  H02K41/00

CPC classification number: B60L15/005 ,  H02K41/03 ,  Y02T10/641 ,  Y02T10/645

Abstract: A linear motor apparatus includes a mover, a stator, a detector, and a driver. The mover is adapted to be shifted along a shifting direction, and has a predetermined magnetic flux distribution. The stator has a plurality of coils aligned along the shifting direction of the mover. The detector detects the relative position of the mover with respect to the stator. The driver excites two or more coils simultaneously based on a predetermined target value and the output of the detector.

Abstract translation: 线性电动机装置包括动子，定子，检测器和驱动器。 移动器适于沿着移动方向移动，并且具有预定的磁通量分布。 定子具有沿着移动器的移动方向排列的多个线圈。 检测器检测移动器相对于定子的相对位置。 基于预定的目标值和检测器的输出，驾驶员同时激励两个或更多个线圈。

公开(公告)号：US5920164A

公开(公告)日：1999-07-06

申请号：US943005

申请日：1997-10-02

Applicant: Frederick G. Moritz ,  Roger Mosciatti

Inventor： Frederick G. Moritz ,  Roger Mosciatti

IPC: H02P25/06 ,  H02K3/04 ,  H02K3/50 ,  H02K9/20 ,  H02K9/22 ,  H02K11/00 ,  H02K29/06 ,  H02K41/03 ,  H02P6/00 ,  H02P6/08 ,  H02P6/20 ,  H02P6/24 ,  H02K29/08

CPC classification number: H02K29/08 ,  H02K11/0094 ,  H02K11/21 ,  H02K11/22 ,  H02K11/33 ,  H02K29/06 ,  H02K41/03 ,  H02K9/20 ,  H02K9/22 ,  H02P6/20 ,  H02P6/24 ,  H02P6/28 ,  H02K3/04 ,  H02K3/50

Abstract: The armature coils of a brushless linear motor are cast in resin to form an armature plate. A heat sink is attached along one edge of the plate with conductive pins (e.g. aluminum pins) extending through the plate and into the heat sink. Fans, attached to the heat sink, draw air across it in order to remove heat by convection. A wireless communications link transmits commutation data and/or armature position data to a motor controller.

Abstract translation: 无刷直线电动机的电枢线圈铸造成树脂形成衔铁板。 散热器沿着板的一个边缘被附接，导电销（例如铝销）延伸穿过板并进入散热器。 风扇，连接到散热器，吸引空气穿过它，以通过对流去除热量。 无线通信链路将换向数据和/或电枢位置数据发送到电动机控制器。

公开(公告)号：US5872407A

公开(公告)日：1999-02-16

申请号：US624083

申请日：1996-03-29

Applicant: Toshio Kitaoka ,  Makato Izawa ,  Yasuhiro Matsumoto ,  Katsuhiro Nanba

Inventor： Toshio Kitaoka ,  Makato Izawa ,  Yasuhiro Matsumoto ,  Katsuhiro Nanba

IPC: G01D5/245 ,  H02K29/06 ,  H02K41/03 ,  H02P25/06 ,  H02K41/00

CPC classification number: H02K41/03 ,  H02K29/06

Abstract: A linear motor has a stator and a movable piece. The stator has a field magnet for propulsion. The movable piece has a bobbin which includes a cylindrical member wrapping around the stator, an armature coil which is located around the bobbin, and a yoke which is attached around the armature coil. A groove is formed on the cylindrical member. At the bottom of the groove, a sensor is arranged for detecting the strength of the magnetic field from the field magnet.

Abstract translation: 线性电动机具有定子和可动件。 定子具有用于推进的磁场。 可动片具有线轴，该线轴包括围绕定子缠绕的圆柱形构件，位于线圈架周围的电枢线圈和围绕电枢线圈安装的磁轭。 在圆柱形构件上形成凹槽。 在槽的底部设置有用于检测来自场磁体的磁场强度的传感器。

公开(公告)号：US5843129A

公开(公告)日：1998-12-01

申请号：US477905

申请日：1995-06-07

Applicant: Carl O. Larson, Jr. ,  James S. Smith ,  John H. Chapman ,  Scot A. Slimon ,  John D. Trahan ,  Robert J. Brozek ,  Alberto Franco ,  John J. McGarvey ,  Marvin E. Rosen ,  Michael K. Pasque

Inventor： Carl O. Larson, Jr. ,  James S. Smith ,  John H. Chapman ,  Scot A. Slimon ,  John D. Trahan ,  Robert J. Brozek ,  Alberto Franco ,  John J. McGarvey ,  Marvin E. Rosen ,  Michael K. Pasque

IPC: F04B19/04 ,  A61M1/00 ,  A61M1/10 ,  A61M1/12 ,  F04B9/00 ,  F04B15/00 ,  F04B53/10 ,  H02K7/14 ,  H02K41/02 ,  H02K41/03 ,  H02P25/06 ,  A61N1/00

CPC classification number: A61M1/101 ,  A61M1/1005 ,  A61M1/1081 ,  A61M1/122 ,  H02K41/031 ,  H02K7/14 ,  A61M1/12

Abstract: In one embodiment described in the specification, a surgically implantable reciprocating pump employs a check valve as the piston, which is driven by a permanent magnet linear electric motor to assist either side of the natural heart. The pump is implanted in the aorta or pulmonary artery using vascular attachment cuffs such as flexible cuffs for suturing at each end with the pump output directly in line with the artery. The pump is powered by surgically implanted rechargeable batteries. In another embodiment, pairs of pumps are provided to replace or assist the natural heart or to provide temporary blood flow throughout the body, for example, during operations to correct problems with the natural heart.

Abstract translation: 在说明书中描述的一个实施例中，手术可植入的往复泵采用止回阀作为活塞，其由永磁线性电动机驱动以辅助自然心脏的任一侧。 使用血管附着袖口（例如柔性袖口）将泵植入主动脉或肺动脉，用于在每端用于缝合直接与动脉一致的泵输出。 该泵由手术植入的可充电电池供电。 在另一个实施例中，提供成对的泵来代替或辅助天然心脏或者在整个身体中提供临时血液流动，例如在纠正自然心脏问题的操作期间。

公开(公告)号：US5818180A

公开(公告)日：1998-10-06

申请号：US819597

申请日：1997-03-17

Applicant: Athos Canclini

Inventor： Athos Canclini

IPC: G11B5/55 ,  G11B21/08 ,  H02P7/00 ,  H02P25/02 ,  H02P25/06 ,  H02K23/00

CPC classification number: G11B21/083 ,  H02P25/034 ,  H02P7/04 ,  G11B5/5547 ,  Y10S388/903

Abstract: A circuit for driving a voice coil motor used to position the heads of a disk drive is disclosed. The circuit consists of a an H-bridge circuit, a controller, and a feedback loop. The feedback loop prevents the BEMF from driving a voltage on the voice coil motor above the supply voltage.

Abstract translation: 公开了用于驱动用于定位磁盘驱动器的磁头的音圈电机的电路。 该电路由H桥电路，控制器和反馈回路组成。 反馈回路防止BEMF将音圈电机上的电压驱动到电源电压以上。