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1. 发明授权

US6078457A Driving method for a stepping motor 失效
标题翻译：步进电机的驱动方法
公开(公告)号：US6078457A
公开(公告)日：2000-06-20
申请号：US879025
申请日：1997-06-19
申请人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono , Masahisa Ezuka
发明人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono , Masahisa Ezuka
IPC分类号： G11B19/20 , H02P8/08 , H02P8/14
CPC分类号： G11B19/20
摘要： A method for driving a recording disc applies a DC excitation hold so that a rotor portion is stopped. Thereafter, a DC excitation frequency is gradually increased from a low frequency to a rated frequency and synchronizes with the rated revolution.
摘要翻译：用于驱动记录盘的方法施加直流励磁保持，使得转子部分停止。此后，直流励磁频率从低频逐渐增加到额定频率，并与额定转速同步。

2. 发明授权

US5914581A Information recording device 失效
标题翻译：信息记录装置
公开(公告)号：US5914581A
公开(公告)日：1999-06-22
申请号：US732036
申请日：1996-10-16
申请人： Yuzuru Suzuki , Sakae Fujitani , Masahisa Ezuka
发明人： Yuzuru Suzuki , Sakae Fujitani , Masahisa Ezuka
IPC分类号： G06F13/00 , G11B19/00 , G11B19/20 , G11B19/28 , H02P5/28
CPC分类号： G11B19/20 , G11B19/00
摘要： In order to raise the drive efficiency of a spindle motor that drives a recording disk for information recording and hence to achieve power saving/lowering of noise level of the information recording device as a whole, in an information recording device wherein a synchronous motor is employed as the spindle motor that drives the recording disk for information recording, and wherein the head is accessed for purposes of reading or writing information at a designated position on the recording disk, with change in mechanical output of this spindle motor, the mechanical output value sought for the spindle motor is found from the head position on the recording disk before and after access, and the thus-found mechanical output value is used to adjust the electrical input to the spindle motor.
摘要翻译：为了提高驱动用于信息记录的记录盘的主轴电动机的驱动效率，从而整体上实现信息记录装置的噪声电平的功率节省/降低，在使用同步电动机的信息记录装置中作为驱动用于信息记录的记录盘的主轴电动机，并且其中，为了在记录盘上的指定位置读取或写入信息的目的而访问磁头，随着该主轴电机的机械输出的变化，寻求机械输出值对于主轴电机，从存取前后记录盘上的磁头位置找到主轴电机，由此找到的机械输出值用于调整主轴电机的电气输入。

3. 发明授权

US06194806B1 Compact cylindrical radial gap type motor 有权
标题翻译：紧凑型圆柱径向间隙式电机
公开(公告)号：US06194806B1
公开(公告)日：2001-02-27
申请号：US09328372
申请日：1999-06-09
申请人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono , Masaki Kagawa
发明人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono , Masaki Kagawa
IPC分类号： H02K100
CPC分类号： H02K1/148 , H02K3/522 , H02K5/161 , H02K5/225 , H02K21/14 , H02K29/08 , H02K2203/03 , H02K2203/12 , H02K2211/03
摘要： An iron core type cylindrical radial gap type motor structure, by having field magnetic poles generated by permanent magnets and, in opposition to these, salient poles generating a rotational magnetic field and arranged with their emission direction along the rotational axis, the shape of salient poles being approximately T-shaped in cross-section along the rotational axis direction, and I-shaped in cross-section at right angles to the rotational axis direction, the upper end of said T-shaped opposing the axial direction of the rotor magnets and the lower end being mechanically coupled and fixed to the stator ring, thus constructing the magnetic circuit of the armature, and where the relationship between the length L1 of the said salient pole in the axial direction opposed to the field magnetic pole, and the length L2 in the axial direction of the coil core section about which the coil is wrapped, satisfies the conditions 0.3*L1≦L2≦0.6*L1, and, furthermore, where the relationship between the thickness A1 of the said salient pole in the circumferential direction, and the pitch P of the field magnetic pole, satisfies the conditions 0.4*P≦A1≦0.8*P.
摘要翻译：铁芯型圆柱形径向间隙型电动机结构，通过由永久磁铁产生的场磁极，并且与其相反，产生旋转磁场的凸极，并沿其旋转轴线布置有其发射方向，凸极的形状沿着旋转轴方向的截面大致为T形，与旋转轴线方向成直角的截面呈I字形，所述T字形的上端与转子磁体的轴向相反，下端被机械地联接并固定在定子环上，从而构成电枢的磁路，并且其中所述凸极的与场磁极相对的轴向方向的长度L1与长度L2之间的关系卷绕线圈芯部分的轴向方向满足条件0.3 * L1 <= L2 <= 0.6 * L1，此外，其中关系式使所述凸极的圆周方向的厚度A1和场磁极的间距P变得满足条件0.4 * P <= A1 <= 0.8 * P。

4. 发明授权

US6087755A Radial gap type cylindrical motor 失效
标题翻译：径向型圆柱电机
公开(公告)号：US6087755A
公开(公告)日：2000-07-11
申请号：US136039
申请日：1998-08-20
申请人： Yuzuru Suzuki , Sakae Fujitani , Masaki Kagawa , Yoshiyuki Aono , Masato Hata , Kunitake Matsushita
发明人： Yuzuru Suzuki , Sakae Fujitani , Masaki Kagawa , Yoshiyuki Aono , Masato Hata , Kunitake Matsushita
IPC分类号： H02K1/14 , H02K3/46 , H02K3/52 , H02K11/04 , H02K15/02 , H02K21/12 , H02K29/00 , H02K29/08 , H02K37/00
CPC分类号： H02K1/148 , H02K11/33 , H02K29/08 , H02K3/522 , H02K2201/06 , H02K2201/09
摘要： A motor structure having an armature yoke 1 including a cylindrical portion and a plurality of salient poles 20 formed in the radial direction on the circumference of one end of the cylindrical portion, characterized by having a stator coil 5 formed by a concentrated winding provided around a salient pole portion 20', which is formed by joining the salient poles 20 of two armature yokes 1 together, and a motor structure characterized by having the above described structure and further having a salient pole piece 11 disposed on the front end of the salient pole portion in confronting relationship with a rotor magnet 2.
摘要翻译：一种电动机结构，其具有包括圆筒部的电枢磁轭1和在圆筒部的一端的圆周上沿径向形成的多个凸极20，其特征在于，具有定子线圈5，通过将两个电枢轭1的凸极20接合在一起形成的凸极部分20'和具有上述结构的电动机结构，并且还具有设置在突极的前端上的凸极片11 与转子磁体2相对的部分。

5. 发明授权

US6057621A Cylindrical radial gap type motor structure 失效
标题翻译：圆柱形径向间隙型电机结构
公开(公告)号：US6057621A
公开(公告)日：2000-05-02
申请号：US186147
申请日：1998-11-05
申请人： Yuzuru Suzuki , Sakae Fujitani , Masaki Kagawa , Yoshiyuki Aono
发明人： Yuzuru Suzuki , Sakae Fujitani , Masaki Kagawa , Yoshiyuki Aono
IPC分类号： H02K1/14 , H02K5/02 , H02K21/14 , H02K21/12
CPC分类号： H02K21/14 , H02K1/148 , H02K2201/06 , H02K5/02
摘要： Salient poles made from soft magnetic steel plates have tip sections of approximately the same length as a rotor magnet. The salient poles are constructed with laminations in the circumferential direction, with axial dimensions adjusted with respect to the circumferential dimensions determined by the constraints of the winding to allow winding sections with a minimum required cross-sectional area so that magnetic saturation does not occur. These winding sections are inserted into coils wound with magnet wire, and press fitted into the stator which makes the magnetic circuit with the salient poles and forms the armature.
摘要翻译：由软磁钢板制成的凸极具有与转子磁体大致相同长度的尖端部分。凸极在圆周方向上具有叠片，其轴向尺寸相对于由绕组的约束确定的周向尺寸进行调节，以允许具有最小所需横截面面积的卷绕部分，使得不发生磁饱和。将这些绕组部分插入到用电磁线缠绕的线圈中，并将其压配合到定子中，使磁路与凸极形成电枢。

6. 发明授权

US6065231A Motor drive method and drive circuit 失效
标题翻译：电机驱动方式及驱动电路
公开(公告)号：US6065231A
公开(公告)日：2000-05-23
申请号：US15339
申请日：1998-01-29
申请人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono
发明人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono
IPC分类号： G11B19/20 , G11B19/28 , H02P8/10 , H02P23/00 , H02P8/00
CPC分类号： G11B19/2009 , G11B19/28
摘要： There is disclosed a synchronous motor drive in which in a record disc drive of an information recording device a quantity of generated excitation noise is reduced to a small level to which a reading/writing signal is not influenced and a substantial motor generation torque is prevented from lowering. An absolute value of a maximum voltage gradient of a coil excitation voltage waveform is set to a certain value or less. The waveform alternates at a synchronous frequency which is determined by the number of poles of a rotating magnetic field produced in an air gap by a stator winding and the number of revolutions.
摘要翻译：公开了一种同步电动机驱动器，其中在信息记录装置的记录盘驱动器中，产生的激励噪声的数量被减小到读/写信号不受影响的较小水平，并且防止了大量的电动机产生转矩降低将线圈激励电压波形的最大电压梯度的绝对值设定为一定以下。波形以由定子绕组在气隙中产生的旋转磁场的极数和转数确定的同步频率交替。

7. 发明授权

US5929589A Stepping motor drive and a method of driving same 失效
标题翻译：步进电机驱动及其驱动方法
公开(公告)号：US5929589A
公开(公告)日：1999-07-27
申请号：US931521
申请日：1997-09-16
申请人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono , Masahisa Etsuka
发明人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono , Masahisa Etsuka
IPC分类号： G11B19/28 , G05B19/416 , H02K37/14 , H02P8/14 , H02P8/38 , G05B19/40
CPC分类号： G05B19/416 , G05B2219/37124 , G05B2219/41326 , G05B2219/41365
摘要： The invention is related to a stepping motor drive and a driving method thereof and presents a technology to constantly monitor the phenomenon of step out during the operation of the motor and automatically bring into action a restarting circuit when a step out occurs so that said motor having stepped out may be able to automatically restart, wherein the stepping motor drive is provided with a starting instruction designed to start/stop the stepping motor, a speed sensor or an index sensor designed to detect the rotation speed of said motor, means to detect the rotation speed of said motor from the output of said speed sensor, a rotation speed detection means by detecting the difference of rotation speed with the rated rotation speed, a speed judgment means designed to output signals when the rotation speed of said motor has fallen below the set reference speed, and a restarting pattern generating means designed to automatically increase gradually frequency for a prescribed time from the pull-in frequency of said motor to the desired frequency.
摘要翻译：本发明涉及一种步进电动机驱动及其驱动方法，并且提出了一种在电动机操作期间不断监测失步现象的技术，并且当发生出门时自动地启动再起动电路，使得所述电动机具有可以自动重启，其中步进电动机驱动器设置有用于启动/停止步进电机的启动指令，设计用于检测所述电动机的转速的速度传感器或指标传感器，所述电动机从所述速度传感器的输出的转速，通过以额定转速检测转速的差异的转速检测装置，设计成当所述电动机的转速低于所述转速时输出信号的速度判定装置设定基准速度，以及重新设定模式生成单元，其设计成在t从t开始逐渐增加规定时间的频率他将所述电机的吸入频率提高到所需的频率。

8. 发明授权

US5880569A Motor for use in information recording device 失效
标题翻译：用于信息记录装置的电机
公开(公告)号：US5880569A
公开(公告)日：1999-03-09
申请号：US844387
申请日：1997-04-18
申请人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono
发明人： Yuzuru Suzuki , Sakae Fujitani , Yoshiyuki Aono
IPC分类号： H02K37/14 , G11B19/20 , H02K37/22 , H02P8/00
CPC分类号： H02K37/22 , G11B19/2009
摘要： An information recording device is provided, whereby an inexpensive stepping motor is used to drive a recording disk for recording information, the disk being driven under open-loop control by means of inexpensive digital circuit technology, without employing rotor position detectors or a speed detector, and the rotational accuracy of the recording disk is raised to a level suitable for application, without increasing cost, by constituting the aforementioned step operation (having poor rotational accuracy) inherent in the stepping motor such that certain relationships are formed between the structural parameters of the information recording device and the structural parameters of the motor. In a stepping motor, electrical energy is supplied by switching excitation at a timing synchronized to an input clock, regardless of the load. When this electrical energy is converted to mechanical energy, the moment of inertia of the rotating portion is exploited to a maximum in order to produce smooth rotation.
摘要翻译：提供了一种信息记录装置，其中廉价的步进电机被用于驱动用于记录信息的记录盘，该盘通过廉价的数字电路技术在开环控制下被驱动，而不使用转子位置检测器或速度检测器，并且通过构成步进电机固有的上述步骤操作（具有差的旋转精度），将记录盘的旋转精度提高到适合于应用的水平，而不增加成本，使得在步进电机的结构参数之间形成某些关系信息记录装置和电机的结构参数。在步进电机中，不管负载如何，通过与输入时钟同步的定时通过开关激励来提供电能。当该电能转化为机械能时，旋转部分的转动惯量被最大限度地利用以产生平滑的旋转。

9. 发明授权

US07049723B2 DC motor 失效
标题翻译：直流电机
公开(公告)号：US07049723B2
公开(公告)日：2006-05-23
申请号：US10046629
申请日：2002-01-14
申请人： Yuzuru Suzuki , Sakae Fujitani , Seiichi Matsuura
发明人： Yuzuru Suzuki , Sakae Fujitani , Seiichi Matsuura
IPC分类号： H02K1/27
CPC分类号： H02K29/03
摘要： The disclosure describes a DC motor including a rotor unit arranged within the motor body and has a cylindrical field magnet fixed to an outer surface of a holder. The holder has a rotating shaft press-fitted through the center, and the cylindrical field magnet has the S and the N poles alternately around a circumference. There is a stator unit which is circumferentially arranged around the rotor unit, that is made of a plurality of stator yokes that are arranged so that they oppose the field magnet through a small gap. Each of the stator yokes is formed by circumferentially stacking a large number of thin plates, each consisting of a salient pole, and a number of coil units, each formed by winding a magnet wire on a bobbin, and mounting the bobbins on the stator yokes. In the described arrangement, each of the S and N poles has a plurality of stages formed in an axial direction and shifted from each other in the circumferential direction by a predetermined shift amount with respect to the field magnet.
摘要翻译：本公开内容描述了一种DC电动机，其包括设置在电动机主体内的转子单元，并且具有固定到保持器的外表面的圆柱形场磁体。保持器具有通过中心压配合的旋转轴，圆柱形场磁体在周围交替地具有S和N极。在转子单元周围布置有定子单元，该定子单元由多个定子轭构成，该多个定子轭布置成使得它们通过小间隙与场磁体相对。每个定子磁轭是通过周向地堆叠多个薄板形成的，每个薄板由凸极和多个线圈单元组成，每个薄板通过将线圈缠绕在线轴上而形成，并将线轴安装在定子磁轭上。在上述结构中，S极和N极各自具有沿轴向形成的多个台阶，并且相对于场磁铁在圆周方向上彼此偏移预定的偏移量。

10. 发明申请

US20060044096A1 Electromagnetic actuator and composite electromagnetic actuator apparatus 失效
公开(公告)号：US20060044096A1
公开(公告)日：2006-03-02
申请号：US11211904
申请日：2005-08-25
申请人： Yuzuru Suzuki , Sakae Fujitani , Naoyuki Harada , Kunitake Matsushita
发明人： Yuzuru Suzuki , Sakae Fujitani , Naoyuki Harada , Kunitake Matsushita
IPC分类号： H01F7/08
CPC分类号： H01F7/1615 , H01F7/122
摘要： An electromagnetic actuator with high performance such as high speed and high resolution is inexpensively provided with solutions to problems associated with power supply and leakage flux, which have been involved in the structure of a moving coil type and have been shortcomings of a VCM type actuator. A composite electromagnetic actuator apparatus employs the foregoing electromagnetic actuator. The electromagnetic actuator is equipped with a stationary assembly that includes two coils disposed coaxially with each other inside a hollow stator yoke composed of a soft magnetic material, and a movable assembly composed of a movable magnet unit and a movable yoke unit both disposed inside the coils with a very small clearance therefrom so as to be movable in the axial direction, wherein the movable assembly travels in the axial direction by the interaction between a magnetic field generated by the movable magnet unit and a current passing through the coils.

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