公开(公告)号：US06563242B2

公开(公告)日：2003-05-13

申请号：US09788964

申请日：2001-02-20

申请人： Eiichi Ibata ,  Toshiaki Tsuzaki

发明人： Eiichi Ibata ,  Toshiaki Tsuzaki

IPC分类号： H02K3304

CPC分类号： H02K7/061 ,  H02K5/161 ,  H02K5/225 ,  H02K23/58

摘要： A slim motor good for a portable device includes a frame, pipe, magnet, coil, shaft, first bearing and a second bearing (inside bearing). The pipe is disposed on an inner wall of the cylindrical magnet, and an outer diameter of the second bearing is set at approx. the same as that of the pipe. The second bearing is aligned to the pipe in an axial direction and fixed on the inner wall of the magnet. This structure allows the magnet to extend axially long enough, and solves conventional problems including power consumption, slant of the shaft, motor efficiency, productivity and the like, thereby contributing to achieving a slimmer motor and a slimmed-down device.

公开(公告)号：US06833639B2

公开(公告)日：2004-12-21

申请号：US10326116

申请日：2002-12-23

申请人： Collins Yu Cheong Lau ,  Kang Wah Cheung

发明人： Collins Yu Cheong Lau ,  Kang Wah Cheung

IPC分类号： H02K3304

CPC分类号： H02K33/16 ,  A61C17/3418 ,  H02K5/22 ,  H02K11/33

摘要： An electric actuator for providing an angular reciprocating drive, comprising a casing, a stator housed in the casing, and an armature extending co-axially through the stator. The stator has an annular arrangement of poles and a coil for energization by an alternating current to magnetise the poles in opposite polarities as between adjacent poles. The armature has a shaft supported by the casing for angular movement and a plurality of permanent magnets mounted fast on and around the shaft. The magnets have proximal sides as between adjacent magnets of opposite polarities, wherein upon repeated reversals of said alternating current the magnets interact magnetically with the poles to cause the shaft to oscillate thereby providing said drive.

摘要翻译： 一种用于提供角度往复运动的电致动器，包括壳体，容纳在壳体中的定子以及同轴地延伸穿过定子的衔铁。 定子具有环形结构的极和用于通过交流电激励的线圈，以相邻极性之间的相反极性磁化磁极。 衔铁具有由壳体支撑用于角运动的轴和安装在轴上和周围的多个永磁体。 磁体具有相邻极性的相邻磁体之间的近侧，其中在重复反转所述交流电流时，磁体与磁极相互作用，从而使轴振动从而提供所述驱动。

公开(公告)号：US06538402B2

公开(公告)日：2003-03-25

申请号：US09758237

申请日：2001-01-12

申请人： Halit S. Gokturk ,  Satoshi Nakayama ,  Kozo Kawai ,  Hideaki Abe ,  Toyokatsu Okamoto

发明人： Halit S. Gokturk ,  Satoshi Nakayama ,  Kozo Kawai ,  Hideaki Abe ,  Toyokatsu Okamoto

IPC分类号： H02K3304

CPC分类号： H02P25/032

摘要： An improved self-oscillation system for a linear oscillatory actuator composed of a stator and a reciprocator. The stator carries a winding to which an electric current is periodically supplied for making a resonant oscillation of the reciprocator. The system includes a self-oscillation circuit for continuing the resonant oscillation of the actuator by a positive feedback manner based upon a back electromotive force (Vbemf) appearing across the winding. The system further includes a PWM control for increasing the electric current in response to a decreasing oscillation amplitude due to an increasing load applied to the reciprocator. A detector circuit is included to monitor the oscillation amplitude of the reciprocator and provides a corresponding detector output in response to which the self-oscillation circuit provides a drive pulse of varying pulse width for making the PWM control. The detector circuit is connected to monitor Vbemf of the winding in the absence of the electric current and to judge the instant oscillation amplitude of the reciprocator based upon the monitored Vbemf. Thus, the system can eliminate an external sensor, yet assuring the PMW control reliably based upon Vbemf correctly reflecting the actual oscillation of the reciprocator.

摘要翻译： 一种用于由定子和往复运动器组成的线性振荡致动器的改进的自振荡系统。 定子承载周期性地提供电流的绕组，以进行往复运动器的共振振荡。 该系统包括一个自振荡电路，用于基于出现在绕组上的反电动势（Vbemf），通过正反馈方式继续致动器的谐振振荡。 该系统还包括一个PWM控制，用于响应由于施加到往复运动器的增加的负载而减小的振荡幅度来增加电流。 包括检测器电路以监视往复运动器的振荡幅度，并提供相应的检测器输出，响应于此，自振荡电路提供脉冲宽度变化的驱动脉冲用于进行PWM控制。 检测器电路在不存在电流的情况下连接到对绕组的Vbemf进行监测，并且基于所监视的Vbemf来判断往复运动器的瞬时振荡幅度。 因此，该系统可以消除外部传感器，而且基于正确反映往复运动器的实际振荡的Vbemf可靠地确保PMW控制。