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    • 4. 发明申请
    • METHOD FOR CALCULATING MOTOR CONSTANT OF PERMANENT MAGNET TYPE SYNCHRONOUS MOTOR AND MOTOR CONSTANT CALCULATING DEVICE
    • 计算永磁同步电机和电机恒定计算装置的电机常数的方法
    • US20140152202A1
    • 2014-06-05
    • US14232731
    • 2012-07-30
    • Toru TazawaMasaru Nishizono
    • Toru TazawaMasaru Nishizono
    • H02P23/14
    • H02P23/14H02P6/183
    • A method for calculating a motor constant of a permanent magnet type synchronous motor according to the present invention includes: a voltage applying step of applying a voltage obtained by compositing a DC component and an AC component to a permanent magnet type synchronous motor while varying a frequency of the AC component; a current detecting step of detecting a motor current flowing according to the applied voltage; a phase difference calculating step of calculating a difference in phase between the AC component of the applied voltage and an AC component of the motor current; and a motor constant calculating step of calculating a motor constant of the permanent magnet type synchronous motor. In addition, in the motor constant calculating step, the motor constant is calculated based on the applied voltage and the motor current when the difference in phase becomes nearly 45 degrees.
    • 根据本发明的用于计算永磁式同步电动机的电动机常数的方法包括:电压施加步骤,其通过将永久磁铁式同步电动机的DC分量和AC分量合成而获得的电压改变频率 的AC组件; 电流检测步骤,检测根据所施加的电压流动的电动机电流; 相位差计算步骤,计算施加电压的交流分量与电动机电流的交流分量之间的相位差; 以及计算永磁式同步电动机的电动机常数的电动机常数计算步骤。 此外,在电动机常数计算步骤中,当相位差近似45度时,基于所施加的电压和电动机电流来计算电动机常数。
    • 7. 发明授权
    • Motor controller
    • 电机控制器
    • US08378615B2
    • 2013-02-19
    • US12678802
    • 2009-06-01
    • Toru TazawaHiroshi FujiwaraMasaru Nishizono
    • Toru TazawaHiroshi FujiwaraMasaru Nishizono
    • G05B5/01
    • H02P29/00H02P6/10H02P29/50
    • There are provided: a plurality of notch filters which are arranged inside a control system for feedback-controlling a moving operation of a moving section of a motor and attenuate signal components having near frequencies with a notch frequency at a center in an input signal; a plurality of oscillation extracting filters which are set with different frequency bands as being corresponded to the respective notch filters and extract oscillating components in the set frequency bands from a speed detection signal; and a plurality of notch controlling sections which are arranged with respect to the respective oscillation extracting filters and control the notch frequencies of the corresponding notch filters so as to decrease amplitudes of the oscillating components extracted by the oscillation extracting filters.
    • 提供:多个陷波滤波器,其设置在控制系统内部,用于反馈控制电动机的移动部分的移动操作,并且衰减具有输入信号中心处的陷波频率的接近频率的信号分量; 多个振荡提取滤波器,其被设置为与各个陷波滤波器相对应的不同频带,并从速度检测信号中提取设定频带中的振荡分量; 以及相对于各个振荡提取滤波器布置的多个切口控制部分,并且控制对应的陷波滤波器的陷波频率,以便减小由振荡提取滤波器提取的振荡分量的振幅。
    • 9. 发明授权
    • Motor controller
    • 电机控制器
    • US07843159B2
    • 2010-11-30
    • US12136282
    • 2008-06-10
    • Toru Tazawa
    • Toru Tazawa
    • G05B5/01
    • H02P23/04
    • A motor controller includes: a notch filter arranged inside a control system; an oscillation frequency estimating section which estimates an oscillation frequency component in a motor; and a notch control section which controls a notch filter so as to change a notch frequency and a notch width. The notch control section changes a frequency between an oscillation frequency and a notch frequency set in a notch filter as a new notch frequency, while changing a notch width to a new notch width such that the notch width is larger after the change than before the change.
    • 电动机控制器包括:配置在控制系统内的陷波滤波器; 振荡频率估计部,估计电动机的振荡频率分量; 以及切口控制部,其控制陷波滤波器以改变切口频率和切口宽度。 陷波控制部分将在陷波滤波器中设置的振荡频率和陷波频率之间的频率作为新的陷波频率改变,同时将切口宽度改变到新的切口宽度,使得切换宽度在变化之后比在改变之前更大 。
    • 10. 发明授权
    • Method and apparatus for position-sensorless motor control
    • 无位置传感器电机控制的方法和装置
    • US06583593B2
    • 2003-06-24
    • US09975826
    • 2001-10-11
    • Tomokuni IijimaKazushige NarazakiToru TazawaIchiro OyamaYukinori Maruyama
    • Tomokuni IijimaKazushige NarazakiToru TazawaIchiro OyamaYukinori Maruyama
    • H02P118
    • H02P6/18H02P6/183
    • A method for position-sensorless motor control is provided, wherein a rotor-position estimation current signal is superimposed on the &ggr;-axis direction component of a target current vector representing target currents of stator windings. The period of the current signal is an even multiple of a PWM carrier period and varies at random. The amplitude of the current signal increases with the amplitudes of the target currents. An even number of samples are obtained from the &dgr;-axis direction component of a current vector representing detected currents of the stator windings in each period of the current signal. A discrete Fourier integration of the samples determines the amplitude of a current response to the current signal in the &dgr;-axis direction. The &ggr;-axis direction is corrected so that the current response substantially shrinks to zero in the &dgr;-axis direction.
    • 提供了一种无位置传感器电机控制方法,其中转子位置估计电流信号叠加在表示定子绕组的目标电流的目标电流矢量的γ轴方向分量上。 当前信号的周期是PWM载波周期的偶数倍,随机变化。 电流信号的幅度随目标电流的幅度而增加。 从表示电流信号的每个周期中定子绕组的检测电流的电流矢量的δ轴方向分量获得偶数个采样。 采样的离散傅立叶积分确定了在三角轴方向上对当前信号的电流响应的幅度。 校正γ轴方向,使得电流响应在Δ轴方向上基本上收缩到零。