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18 条记录 (耗时 0.022 秒)

    Load detecting system and automatic washing machine equipped with a system for detecting the magnitude of the load acting on a magnetostrictive element
    9.
    发明授权
    Load detecting system and automatic washing machine equipped with a system for detecting the magnitude of the load acting on a magnetostrictive element 有权
    负载检测系统和自动洗衣机配备有用于检测作用在磁致伸缩元件上的负载的大小的系统

    公开(公告)号：US06983657B1

    公开(公告)日：2006-01-10

    申请号：US10049000

    申请日：2000-08-28

    申请人： Kazushige Kakutani ,  Keiji Kishimoto ,  Kazunobu Yokotani ,  Hideaki Aoki ,  Kazufumi Ushijima ,  Takeshi Fukunaga ,  Minoru Nakanishi ,  Fumitake Kondo

    发明人： Kazushige Kakutani ,  Keiji Kishimoto ,  Kazunobu Yokotani ,  Hideaki Aoki ,  Kazufumi Ushijima ,  Takeshi Fukunaga ,  Minoru Nakanishi ,  Fumitake Kondo

    IPC分类号： G01B7/16 ,  G01L1/00

    CPC分类号： D06F37/24 ,  D06F39/003 ,  G01G19/52 ,  G01L1/125 ,  G01L1/127

    摘要： The invention provides a load detecting system comprising a core (83) of magnetostrictive material, a coil (85) disposed in the vicinity of the core, and a load detecting circuit (10) connected to the coil (85) for detecting the magnitude of a load acting on the core (83). The load detecting circuit (10) comprises an exciting circuit (102) for passing an a.c. detecting current through the coil (85), a pulse current generating circuit (103) for passing through the coil a detection preparing current having a current value greater than the maximum value of the detecting current, a change-over circuit (104) for effecting a change-over between the exciting circuit (102) and the pulse current generating circuit (103) to pass the detecting current through the coil after passing the detection preparing current therethrough, and a microcomputer (100) for deriving the magnitude of the load acting on the magnetostrictive element based on an impedance variation produced in the coil during the period of passage of the detecting current through the coil.

    摘要翻译： 本发明提供了一种负载检测系统，其包括磁致伸缩材料芯（83），设置在芯附近的线圈（85）和连接到线圈（85）的负载检测电路（10），用于检测 作用在芯部（83）上的负载。 负载检测电路（10）包括用于通过交流电流的激励电路（102）。 检测通过线圈（85）的电流;脉冲电流产生电路（103），用于使具有大于检测电流的最大值的电流值的检测准备电流通过线圈;用于实现 激励电路（102）和脉冲电流产生电路（103）之间的转换，使检测准备电流通过之后通过线圈传递检测电流;以及微计算机（100），用于导出负载的大小 基于在检测电流通过线圈的通过期间在线圈中产生的阻抗变化的磁致伸缩元件。

    Driving device of motor
    10.
    发明授权
    Driving device of motor 失效
    电机驱动装置

    公开(公告)号：US07375482B2

    公开(公告)日：2008-05-20

    申请号：US11523002

    申请日：2006-09-19

    申请人： Mamoru Kubo ,  Kenji Nojima ,  Kazuhisa Otagaki ,  Yoshio Tomigashi ,  Keiji Kishimoto

    发明人： Mamoru Kubo ,  Kenji Nojima ,  Kazuhisa Otagaki ,  Yoshio Tomigashi ,  Keiji Kishimoto

    IPC分类号： H02P21/00 ,  H02P6/20

    CPC分类号： H02P21/34 ,  H02P6/21

    摘要： An object is to provide a driving device capable of smoothly shifting from a starting state to a sensor-less vector control, in a case where the device drives a motor by the sensor-less vector control, and the device includes a voltage detecting circuit which detects an induced electromotive voltage of the motor. A control circuit starts the motor by rectangular wave control. A magnetic pole position of a rotor is detected based on an induced electromotive voltage of one remaining phase of the motor detected by the voltage detecting circuit. The control circuit controls a main inverter circuit based on the detected magnetic pole position, and accelerates the motor by the rectangular wave control. In a case where a predetermined shift revolution speed is reached, the control circuit shifts to vector control by the sensor-less in which the magnetic pole position detected during the rectangular wave control is used as an initial value.

    摘要翻译： 本发明的目的是提供一种驱动装置，其能够在通过无传感器矢量控制来驱动电动机的情况下，能够从启动状态平滑地变换为无传感器矢量控制，并且该装置包括：电压检测电路， 检测电动机的感应电动势。 控制电路通过矩形波控制启动电机。 基于由电压检测电路检测到的电机的一个剩余相的感应电动势来检测转子的磁极位置。 控制电路基于检测到的磁极位置控制主逆变器电路，并通过矩形波控制来加速电动机。 在达到预定的换档转速的情况下，控制电路通过使用在矩形波控制期间检测到的磁极位置作为初始值的无传感器转换到矢量控制。