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1. 发明授权

US06774588B2 Controlling apparatus for linear oscillation motor and method for controlling linear oscillation motor 失效
标题翻译：线性振荡电机控制装置及线性振荡电机控制方法
公开(公告)号：US06774588B2
公开(公告)日：2004-08-10
申请号：US10054846
申请日：2002-01-25
申请人： Yasuo Ibuki , Atsushi Takahashi , Takio Maekawa , Mikihiro Yamasita
发明人： Yasuo Ibuki , Atsushi Takahashi , Takio Maekawa , Mikihiro Yamasita
IPC分类号： H02K3310
CPC分类号： H02P25/032
摘要： A controlling apparatus for controlling a linear oscillation motor includes a sensor and a controller. The motor has a movable element and a stator one of which includes an electromagnet with a winding. The sensor is configured to detect movement of the movable element. The controller is configured to intermittently supply electric power to the winding of the electromagnet to move the movable element reciprocally and linearly. The controller is configured to begin each intermittent supply of electric power to the winding at a timing before a dead center of the movable element based on an output of the sensor.
摘要翻译：用于控制线性振荡电动机的控制装置包括传感器和控制器。电动机具有可动元件和定子，其中一个包括具有绕组的电磁体。传感器被配置为检测可移动元件的移动。控制器被配置为间歇地向电磁体的绕组供电，以使可动元件往复并线性地移动。控制器被配置为基于传感器的输出在可动元件的死点之前的时刻开始向绕组间歇地供给电力。

2. 发明授权

US5955799A Linear vibration motor and method for controlling vibration thereof 失效
标题翻译：线性振动电机及其振动控制方法
公开(公告)号：US5955799A
公开(公告)日：1999-09-21
申请号：US30233
申请日：1998-02-25
申请人： Hidetoshi Amaya , Takio Maekawa , Toyokatsu Okamoto , Yasuo Ibuki
发明人： Hidetoshi Amaya , Takio Maekawa , Toyokatsu Okamoto , Yasuo Ibuki
IPC分类号： H02K33/04 , B26B19/28 , H02K33/16 , H02K33/18 , H02P25/02 , H02K33/02
CPC分类号： B26B19/282 , H02K33/16 , H02P25/032 , Y10S388/902 , Y10S388/937
摘要： A linear vibration motor which includes a vibration system, an electromagnetic driver, a detection system, and a control system. The vibration system includes a driven member or reciprocator which is mounted to a magnetic member for reciprocating movement. The amplitude of the reciprocating movement varies as an inverse function of load on the motor. The electromagnetic driver includes a coil and drives the vibration system by applying an electromagnetic force to the magnetic member, the electromagnetic force being produced by a driving current flowing through the coil. The detection system detects at least one characteristic of the vibration system that is related to a characteristic frequency of the vibration system, and produces a feedback signal indicative of a value of the at least one characteristic. The control system is responsive to the feedback signal, during a primary mode of operation, to controllably vary the driving current flowing through the coil in such a manner as to drive the vibration system in resonance with the characteristic frequency, and determines the existence of a condition that renders the detection system non-functional, and drives the vibration system at a prescribed frequency when it is determined that the condition exists, during a back-up mode of operation.
摘要翻译：一种线性振动电动机，其包括振动系统，电磁驱动器，检测系统和控制系统。振动系统包括从动构件或往复运动器，其被安装到用于往复运动的磁性构件。往复运动的幅度随电机负载的反函数而变化。电磁驱动器包括线圈并通过向磁性构件施加电磁力来驱动振动系统，电磁力由流过线圈的驱动电流产生。检测系统检测与振动系统的特征频率相关的振动系统的至少一个特征，并且产生表示至少一个特征值的反馈信号。控制系统响应反馈信号，在主要操作模式下，以可控地改变流过线圈的驱动电流，以便以特征频率驱动振动系统共振，并且确定存在使得检测系统不起作用的状态，并且在备用操作模式中确定该条件存在时，以规定的频率驱动振动系统。

3. 发明授权

US5736797A Linear oscillating motor 失效
标题翻译：线性振荡电机
公开(公告)号：US5736797A
公开(公告)日：1998-04-07
申请号：US658825
申请日：1996-05-31
申请人： Ryo Motohashi , Masao Tanahashi , Hidetoshi Amaya , Takio Maekawa , Toyokatsu Okamoto , Yasuo Ibuki , Claude Oudet , Daniel Prudham
发明人： Ryo Motohashi , Masao Tanahashi , Hidetoshi Amaya , Takio Maekawa , Toyokatsu Okamoto , Yasuo Ibuki , Claude Oudet , Daniel Prudham
IPC分类号： H02K33/04 , H02K33/06 , H02K33/16 , H02K33/12
CPC分类号： H02K33/16 , H02K33/06
摘要： A linear oscillating motor capable of assuring a consistent and effective feedback control of keeping a constant oscillation amplitude with varying load conditions. The linear oscillating motor comprises an oscillator carrying a permanent magnet, and a stator with an electromagnet. The electromagnet is supplied with an electric power to develop an electromagnetic drive force of moving the oscillator in a linear direction relative to the stator. A spring is provided to apply a restoring force to the oscillator for providing a linear oscillating motion to the oscillator. A photo-sensor monitors the linear motion of the oscillator and outputs a signal to a reverse-point detector which determines right and left reverse points of the oscillator. A controller applies the electric power to the electromagnet at the drive points respectively defined subsequent in time to the reverse points and in a varying amount for keeping a constant oscillation amplitude of the oscillator. The photo-sensor outputs a train of pulses appearing each time the oscillator passes its oscillation center. The reverse-point detector determines the reverse points based upon a time period between the two preceding pulses. Since the photo-sensor can monitor an oscillation cycle of the oscillator without being affected by the magnetic field developed by the electromagnet for driving the oscillator, it provides a reliable basis for accurately determining the reverse points and therefore the drive points. Accordingly, the driving force can be applied at an optimum timing to make the feedback control accurately and reliably.
摘要翻译：一种线性振荡电动机，其能够确保在变化的负载条件下保持恒定振荡幅度的一致且有效的反馈控制。线性振荡电动机包括承载永磁体的振荡器和具有电磁体的定子。向电磁体提供电力以产生使振荡器相对于定子沿线性方向移动的电磁驱动力。提供弹簧以向振荡器施加恢复力以向振荡器提供线性振荡运动。光电传感器监测振荡器的线性运动，并将信号输出到确定振荡器的左右反向点的反向点检测器。控制器将驱动点的电力施加到电磁体上，驱动点分别定义在后向时间到反向点，并且以变化的量保持振荡器的恒定的振荡幅度。光电传感器每当振荡器通过其振荡中心时输出一串脉冲。反向点检测器基于两个在前的脉冲之间的时间段来确定反向点。由于光电传感器可以监视振荡器的振荡周期，而不会受到用于驱动振荡器的电磁铁产生的磁场的影响，因此为准确地确定反向点以及驱动点提供了可靠的依据。因此，可以在最佳定时施加驱动力，从而准确可靠地进行反馈控制。

4. 发明授权

US5706183A Inverter power supply with single discharge path 失效
标题翻译：变频器电源具有单路放电路径
公开(公告)号：US5706183A
公开(公告)日：1998-01-06
申请号：US494792
申请日：1995-06-26
申请人： Hideaki Abe , Shosuke Akisada , Takio Maekawa , Hideki Tamura , Satoru Inakagata
发明人： Hideaki Abe , Shosuke Akisada , Takio Maekawa , Hideki Tamura , Satoru Inakagata
IPC分类号： H02M3/338 , H02M3/335 , H02M3/24 , H02M7/537
CPC分类号： H02M3/338 , Y02B70/1433
摘要： An inverter power supply having a DC source, a transformer having a primary winding, a secondary winding, and a feedback winding, an L-C resonant circuit of a capacitor and the primary winding, and a self-excited oscillator. The oscillator includes an L-C resonant circuit and an FET connected in series with the primary winding across the DC source to generate a high frequency voltage across the primary winding, a feedback voltage across the feedback winding and a resulting output AC voltage across the secondary winding. A biasing capacitor is connected in parallel with a series combination of the L-C resonant circuit and the FET across the DC source to be charged thereby. The biasing capacitor is also connected in series with the feedback winding to provide an offset voltage which is additive to the feedback winding to give a bias voltage applied to a gate of the FET so as to alternately turn on and off the FET for driving the self-excited oscillator. A current sensor is provided to sense a current flowing through FET and gives a first level signal indicative of the sensed current being fed to the resonant circuit. Extending across the biasing capacitor is a single discharge path which does not go through the FET. A switching transistor is inserted in the single discharge path and is caused to turn on, upon the first level signal exceeding a threshold level, to discharge the biasing capacitor to a level for maintaining the offset voltage at a constant level during continued oscillation of the L-C resonant circuit.
摘要翻译：具有DC源，具有初级绕组的变压器，次级绕组和反馈绕组，电容器的L-C谐振电路和初级绕组的逆变器电源和自激振荡器。振荡器包括L-C谐振电路和与跨越DC源的初级绕组串联的FET，以在初级绕组两端产生高频电压，反馈绕组两端的反馈电压以及次级绕组两端产生的输出交流电压。偏置电容器与直流电源的L-C谐振电路和FET的串联组合并联连接，由此进行充电。偏置电容器也与反馈绕组串联连接以提供偏置电压，该偏移电压被加到反馈绕组上，以给出施加到FET的栅极的偏置电压，以交替地导通和关断用于驱动自身的FET 激发振荡器。提供电流传感器以感测流过FET的电流，并且给出指示感测的电流被馈送到谐振电路的第一电平信号。横跨偏置电容器的延伸是不通过FET的单个放电路径。开关晶体管被插入单个放电路径中，并且在第一电平信号超过阈值电平时导通，以将该偏置电容器放电至在液晶连续振荡期间将偏移电压保持在恒定电平的电平谐振电路。

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