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1. 发明授权

US5923110A Spindle motor for optical disc drives 失效
标题翻译：光盘驱动器的主轴电机
公开(公告)号：US5923110A
公开(公告)日：1999-07-13
申请号：US829656
申请日：1997-03-31
申请人： Chi-Mou Zhao , Chin-Po Liao , Shyh-Jier Wang , Min-Der Wu , Der-Ray Huang , Tai-Fa Ying , Eric-G. Lean , Han Chung Wang , Alex Hong , Chiang Cheng Huang , Yin-Rong Hong
发明人： Chi-Mou Zhao , Chin-Po Liao , Shyh-Jier Wang , Min-Der Wu , Der-Ray Huang , Tai-Fa Ying , Eric-G. Lean , Han Chung Wang , Alex Hong , Chiang Cheng Huang , Yin-Rong Hong
IPC分类号： H02K1/14 , G11B19/20 , H02K5/167 , H02K21/22 , H02K29/03 , H02K1/16
CPC分类号： G11B19/2009 , H02K21/227 , H02K29/03 , H02K5/1675 , H02K2201/12
摘要： A spindle motor for a disc drive, such as a CD-ROM drive, is provided. This spindle motor is a brushless motor of a single-phase axial-winding and radial-gap type including a stator, a rotor coupled to said stator, and a driving circuit for supplying a driving signal to the stator to rotate the rotor. The stator includes a pair of upper and bottom salient-pole pieces formed with a plurality of tooth-like portions serving as salient-poles. The peak surface of each tooth-like portion is formed into a symmetrical convex shape, which minimizes the cogging torque of the motor. Further, the use of a phase-adjuster in the driving circuit allows the motor to produce large output torque at high speeds. The output characteristics of this spindle motor meet the requirements of high speed CD-ROM drives.
摘要翻译：提供了用于诸如CD-ROM驱动器的盘驱动器的主轴电动机。该主轴电动机是单相轴向绕组和径向间隙型的无刷电动机，其包括定子，联接到所述定子的转子和用于向定子提供驱动信号以使转子旋转的驱动电路。定子包括形成有用作凸极的多个齿状部分的一对上下凸极片。每个齿形部分的峰面形成为对称的凸起形状，使电动机的齿槽转矩最小化。此外，在驱动电路中使用相位调节器允许电动机以高速度产生大的输出转矩。该主轴电机的输出特性符合高速CD-ROM驱动器的要求。

2. 发明授权

US5838123A Automatic phase adjuster for a brushless motor driving signal 失效
标题翻译：自动相位调节器，用于无刷电机驱动信号
公开(公告)号：US5838123A
公开(公告)日：1998-11-17
申请号：US802564
申请日：1997-02-19
申请人： Chi-Mou Zhao
发明人： Chi-Mou Zhao
IPC分类号： H02P6/08 , H02P6/14 , H02P6/00
CPC分类号： H02P6/08 , H02P6/15
摘要： An automatic phase adjuster for the driver of a brushless motor is provided. This automatic phase adjuster can output a driving signal adaptively with a suitable phase-lead or phase-lag angle so as to allow the motor to be operated with the optimal output characteristics, including optimal output torque, optimal output efficiency, and optimal output power at all speeds. The automatic phase adjuster is configured variously in accordance with the particular type of the motor on which the automatic phase adjuster is used. For single-direction motors operated at a fixed speed, the automatic phase adjuster includes a phase-lead filter coupled to a Hall sensor which detects the motor speed. For single-direction motors operated at various speeds, the automatic phase adjuster includes a phase-lead filter, a phase-lag filter, a multiplexer, and a Hall sensor. The multiplexer selects either the phase-lead filter or the phase-lag filter to process the motor speed signal. For dual-direction motors operated at various speeds, the automatic phase adjuster includes a phase-lead filter, a phase-lag filter, a multiplexer, and a Hall sensor. The multiplexer selects either the phase-lead filter or the phase-lag filter depending on the direction and acceleration/deceleration condition of the motor. This allows the motor to be always driven with optimal performance.
摘要翻译：提供一种用于无刷电动机的驱动器的自动相位调节器。该自动相位调节器可以以合适的相位超前或相位滞后角度自适应地输出驱动信号，以使电动机能够以最佳输出特性（包括最佳输出转矩，最佳输出效率和最佳输出功率）所有速度自动相位调节器根据使用自动相位调节器的电动机的特定类型进行各种配置。对于以固定速度运行的单向电机，自动相位调节器包括耦合到霍尔传感器的相位超前滤波器，其检测电机速度。对于以各种速度运行的单向电机，自动相位调节器包括相位超前滤波器，相位滞后滤波器，多路复用器和霍尔传感器。多路复用器选择相位超前滤波器或相位滞后滤波器来处理电机速度信号。对于以各种速度运行的双向电机，自动相位调节器包括相位超前滤波器，相位滞后滤波器，多路复用器和霍尔传感器。复用器根据电机的方向和加速/减速条件选择相位超前滤波器或相位滞后滤波器。这允许电机始终以最佳性能驱动。

3. 发明授权

US5744893A Brushless motor stator design 失效
标题翻译：无刷电机定子设计
公开(公告)号：US5744893A
公开(公告)日：1998-04-28
申请号：US815585
申请日：1997-03-12
申请人： Chi Mou Zhao , Chin Po Liao , Shyh-Jier Wang , Huang Der-Ray , Ying Tai-Fa
发明人： Chi Mou Zhao , Chin Po Liao , Shyh-Jier Wang , Huang Der-Ray , Ying Tai-Fa
IPC分类号： H02K1/14 , H02K21/22 , H02K29/03 , H02K1/12 , H02K1/00
CPC分类号： H02K21/227 , H02K1/145 , H02K29/03 , H02K2201/12
摘要： A brushless motor stator for an axially wound brushless motor with a diametrical air-gap having a plate structure with at least one plate, the profile of the plate comprising: a central circular hole; a number of salient poles surrounding the central circular hole; and a slot opening between every two adjacent said salient poles. The salient poles and those slot openings have the following characteristics: (1) the outer rim of the salient pole is in the form of a circular arc segment whose arc radius R.sub.S satisfies the following inequality relation: .pi./P.times.R.sub.M
摘要翻译：一种用于轴向卷绕的无刷电动机的无刷电动机定子，其具有具有至少一个板的板结构的直径气隙，所述板的轮廓包括：中心圆形孔; 一些围绕中心圆孔的凸极; 并且在每两个相邻的所述凸极之间的槽开口。凸极和这些槽开口具有以下特点：（1）凸极的外缘为圆弧段的形状，其圆弧半径RS满足以下不等式关系：pi / PxRM

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