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    • 2. 发明授权
    • Control device and control method for alternating-current motor
    • 交流电机控制装置及控制方法
    • US08502493B2
    • 2013-08-06
    • US13121044
    • 2009-10-06
    • Masayoshi SuhamaShogo Tanaka
    • Masayoshi SuhamaShogo Tanaka
    • H02P23/00H02P27/06
    • H02P27/06B60L2240/12B60L2240/421B60L2240/423H02P6/08H02P21/00H02P27/04H02P27/08
    • When instructed to switch control modes between overmodulation PWM control and sinusoidal wave PWM control, control device corrects the amplitude of a voltage command signal based on a state of power conversion operation performed by an inverter, so as to suppress a change in an influence of dead time over a voltage applied to an alternating-current motor upon switching the control modes. The state of the power conversion operation performed by the inverter includes at least one of a present value of a carrier frequency in a control mode currently employed, an estimated value of the carrier frequency to be obtained when switching the control modes, the length of the dead time, a power factor of alternating-current power exchanged between the inverter and the alternating-current motor, and a driving state of the alternating-current motor.
    • 当指示在过调制PWM控制和正弦波PWM控制之间切换控制模式时,控制装置根据逆变器进行的功率转换操作的状态来校正电压指令信号的幅度,以便抑制死区影响的变化 在切换控制模式时施加到交流电动机的电压的时间。 由逆变器执行的电力转换操作的状态包括当前使用的控制模式中的载波频率的当前值,切换控制模式时获得的载波频率的估计值, 停机时间,逆变器和交流电动机之间交流的交流电力的功率因数和交流电动机的驱动状态。
    • 3. 发明申请
    • CONTROL DEVICE AND CONTROL METHOD FOR ALTERNATING-CURRENT MOTOR
    • 用于交流电动机的控制装置和控制方法
    • US20110187308A1
    • 2011-08-04
    • US13121044
    • 2009-10-06
    • Masayoshi SuhamaShogo Tanaka
    • Masayoshi SuhamaShogo Tanaka
    • H02P23/00
    • H02P27/06B60L2240/12B60L2240/421B60L2240/423H02P6/08H02P21/00H02P27/04H02P27/08
    • When instructed to switch control modes between overmodulation PWM control and sinusoidal wave PWM control, control device corrects the amplitude of a voltage command signal based on a state of power conversion operation performed by an inverter, so as to suppress a change in an influence of dead time over a voltage applied to an alternating-current motor upon switching the control modes. The state of the power conversion operation performed by the inverter includes at least one of a present value of a carrier frequency in a control mode currently employed, an estimated value of the carrier frequency to be obtained when switching the control modes, the length of the dead time, a power factor of alternating-current power exchanged between the inverter and the alternating-current motor, and a driving state of the alternating-current motor.
    • 当指示在过调制PWM控制和正弦波PWM控制之间切换控制模式时,控制装置根据逆变器进行的功率转换操作的状态来校正电压指令信号的幅度,以便抑制死区影响的变化 在切换控制模式时施加到交流电动机的电压的时间。 由逆变器执行的电力转换操作的状态包括当前使用的控制模式中的载波频率的当前值,切换控制模式时获得的载波频率的估计值, 停机时间,逆变器和交流电动机之间交流的交流电力的功率因数和交流电动机的驱动状态。
    • 9. 发明授权
    • Flow meter
    • 流量计
    • US07913577B2
    • 2011-03-29
    • US12463662
    • 2009-05-11
    • Shogo TanakaTetsuhiko Hara
    • Shogo TanakaTetsuhiko Hara
    • G01F15/00
    • G01F1/075
    • A flow meter may include a case body formed with a fluid space in its inside, an impeller disposed in the fluid space, a detected part integrally provided in the impeller, a detecting part provided with detecting terminals for detecting the detected part, terminal pins which is provided with terminal contact parts, which are electrically connected with the detecting terminals of the detecting part, and connector parts with which a connector for outputting an electric signal to an outside is connected, and a holder to which the terminal pins are fixed and which is detachably held by the case body through a holder holding part provided in the case body. The detecting part and the terminal contact parts are held between the case body and the holder by attaching the holder to the case body so that the terminal contact parts are contacted with the detecting terminals.
    • 流量计可以包括在其内部形成有流体空间的壳体,设置在流体空间中的叶轮,一体地设置在叶轮中的检测部,设置有用于检测被检测部的检测端子的检测部, 设置有与检测部的检测端子电连接的端子接触部,以及将外部输出电信号的连接器连接到的连接部,以及端子销固定的保持架, 由壳体通过设置在壳体中的保持器保持部分可拆卸地保持。 检测部分和端子接触部分通过将保持器附接到壳体而保持在壳体和保持器之间,使得端子接触部分与检测端子接触。