公开(公告)号：US20050116548A1

公开(公告)日：2005-06-02

申请号：US10882258

申请日：2004-07-02

申请人： Yutaka Oisugi ,  Hideaki Sato

发明人： Yutaka Oisugi ,  Hideaki Sato

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

CPC分类号： H02P25/06 ,  H02K41/03 ,  H02K2201/18

摘要： 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

申请人： Nobushige Korenaga

发明人： Nobushige Korenaga

IPC分类号： 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分类号： G03F7/70758 ,  G03F7/70725 ,  H02K16/00 ,  H02K41/03 ,  H02K41/0354 ,  H02K2201/18

摘要： 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.

摘要翻译： 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

申请人： Kwang Lee

发明人： Kwang Lee

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

CPC分类号： F04B35/045 ,  F04B49/065 ,  F04B2201/0202 ,  F04B2203/0401 ,  F04B2203/0402

摘要： 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.

摘要翻译： 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

申请人： Hiroshi Itoh

发明人： Hiroshi Itoh

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

CPC分类号： B60L15/005 ,  H02K41/03 ,  Y02T10/641 ,  Y02T10/645

摘要： 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.

摘要翻译： 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

申请人： Frederick G. Moritz ,  Roger Mosciatti

发明人： Frederick G. Moritz ,  Roger Mosciatti

IPC分类号： 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分类号： 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

摘要： 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.

摘要翻译： 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

申请人： Toshio Kitaoka ,  Makato Izawa ,  Yasuhiro Matsumoto ,  Katsuhiro Nanba

发明人： Toshio Kitaoka ,  Makato Izawa ,  Yasuhiro Matsumoto ,  Katsuhiro Nanba

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

CPC分类号： H02K41/03 ,  H02K29/06

摘要： 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.

摘要翻译： 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

申请人： 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

发明人： 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分类号： 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分类号： A61M1/101 ,  A61M1/1005 ,  A61M1/1081 ,  A61M1/122 ,  H02K41/031 ,  H02K7/14 ,  A61M1/12

摘要： 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.

摘要翻译： 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

申请人： Athos Canclini

发明人： Athos Canclini

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

CPC分类号： G11B21/083 ,  H02P25/034 ,  H02P7/04 ,  G11B5/5547 ,  Y10S388/903

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5793834A

公开(公告)日：1998-08-11

申请号：US707956

申请日：1996-09-10

申请人： In-oh Park

发明人： In-oh Park

IPC分类号： G01D5/245 ,  G01D5/244 ,  H02K41/02 ,  H02P6/00 ,  H02P6/18 ,  H02P8/00 ,  H02P21/00 ,  H02P25/06 ,  H02P29/00 ,  G01M3/00

CPC分类号： H02P6/006 ,  H02P6/185 ,  H02P8/00

摘要： A method for detecting the position of a linear stepping motor which includes the steps of generating a reference clock signal for detecting the position of the linear stepping motor using an oscillator and counting the reference clock signal with a counter, generating digital values of carrier sine waves sin.omega.t and cos.omega.t by inputting the output of the counter to a ROM having sine and cosine functions, converting the digital values of the carrier sine waves sin.omega.t and cos.omega.t to analog sine wave signals sin.omega.t and cos.omega.t using a digital-to-analog converter and outputting the result, generating the signals sin.omega.tcos.theta. and cos.omega.tsin.theta. by multiplying the analog sine wave signals sin.omega.t and cos.omega.t by sine wave signals sin.theta. and cos.theta. from a linear scale in a multiplier, adding the signals sin.omega.tcos.theta. and cos.omega.tsin.theta. in an adder to form a modulated signal sin(.omega.t+.theta.), converting the a modulated signal sin(.omega.t+.theta.) to a predetermined square wave signal in a comparator so as to be synchronized with the counter, and detecting the phase difference between the square wave signal from the comparator and the sine wave signal sin.omega.t to detect the position of the linear stepping motor. The reference sine wave and square wave signals are compared twice in one period and the displacement of the linear stepping motor is detected in real time by being synchronized with the reference sine wave.

摘要翻译： 一种用于检测线性步进电机的位置的方法，包括以下步骤：产生用于使用振荡器检测线性步进电机的位置并用计数器对参考时钟信号进行计数的基准时钟信号，产生载波正弦波的数字值 通过将计数器的输出输入到具有正弦和余弦函数的ROM的sinωω和cosωωt，将载波正弦波sinωt和cosωt的数字值转换为模拟正弦波信号sinωω和cosω 使用数模转换器并输出结果，通过将模拟正弦波信号sinωt和cosωt乘以正弦波信号sinθ和cosθ从而产生信号sinωtcosθ和cosωtsinθ， 乘法器中的线性标度，在加法器中加上信号sinωωtcosθ和cosωtsinθ，以形成调制信号sin（ω，t +θ），将调制信号 将nal sin（omega t + theta）与比较器中的预定方波信号进行比较，以便与计数器同步，并且检测来自比较器的方波信号与正弦波信号sinωt之间的相位差以检测位置 的线性步进电机。 参考正弦波和方波信号在一个周期内进行两次比较，通过与参考正弦波同步，实时检测线性步进电机的位移。

公开(公告)号：US5631817A

公开(公告)日：1997-05-20

申请号：US424130

申请日：1995-04-19

申请人： Akira Minami

发明人： Akira Minami

IPC分类号： H02P25/06 ,  G11B7/085 ,  G11B7/09 ,  G11B11/10 ,  G11B11/105 ,  G11B21/08 ,  H02P6/00 ,  H02P7/06 ,  H02P7/29 ,  H02M3/24 ,  H02M5/42

CPC分类号： G11B21/083 ,  G11B7/08505 ,  G11B7/09 ,  H02M7/53871 ,  H02P6/28 ,  G11B11/10563

摘要： A PWM pulse of a duty ratio according to a current instruction value D of a servo control section is outputted from a pulse width modulating section to a driving section, thereby current driving a load. In a calibrating process, a calibration processing section outputs a reference current instruction value Dr corresponding to a reference load current Ir and measures a drive current Is of a load. When the measurement current Is doesn't coincide with the reference load current Ir, the current instruction value is adjusted, a current instruction value Ds of the measurement current Is which coincides with the reference load current Ir is obtained, and a correction coefficient K=Ds/Dr of the current instruction value is decided. A correcting section corrects the current instruction value D which is outputted from a control section by the correction coefficient K obtained by the calibrating section and outputs to the pulse width modulating section.

摘要翻译： 根据伺服控制部的当前指令值D的占空比的PWM脉冲从脉冲宽度调制部输出到驱动部，由此驱动负载。 在校准处理中，校准处理部输出与基准负载电流Ir对应的基准电流指令值Dr，并测量负载的驱动电流Is。 当测量电流Is与参考负载电流Ir不一致时，调整当前指令值，获得与参考负载电流Ir一致的测量电流Is的当前指令值Ds，校正系数K = 确定当前指令值的Ds / Dr。 校正部通过由校准部获得的校正系数K校正从控制部输出的当前指示值D，并输出到脉冲宽度调制部。