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    • 2. 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。
    • 5. 发明授权
    • Brushless motor control method and controller
    • 无刷电机控制方式及控制器
    • US06879129B2
    • 2005-04-12
    • US10109206
    • 2002-03-28
    • Toru TazawaKazushige NarazakiTomokuni IijimaHideo MatsushiroSubrata Saha
    • Toru TazawaKazushige NarazakiTomokuni IijimaHideo MatsushiroSubrata Saha
    • H02P6/18H01R39/46H02P5/00H02P5/28
    • H02P6/182
    • In a brushless motor control method and a brushless motor controller in accordance with the present invention, a rotor rotation position detection means detects the time of the intersection of a detected induced voltage and an induced voltage reference value. In addition, a motor speed calculation means calculates the rotation speed of a brushless motor on the basis of the interval of the intersection times detected by the rotor rotation position detection means. Furthermore, a speed control means outputs a duty factor index on the basis of the deviation between the command speed and the rotation speed of the brushless motor. Still further, a switching signal generation means outputs switching signals to groups of switching devices on the basis of the rotation speed and the duty factor index at the time of the intersection.
    • 在根据本发明的无刷电动机控制方法和无刷电动机控制器中,转子旋转位置检测装置检测检测到的感应电压和感应电压基准值的交点的时间。 此外,电动机速度计算装置基于由转子旋转位置检测装置检测到的交叉点时间间隔来计算无刷电动机的转速。 此外,速度控制装置基于指令速度与无刷电动机的转速之间的偏差输出占空比指数。 另外,切换信号生成单元基于交叉点的旋转速度和占空系数指标,向切换装置组输出切换信号。
    • 7. 发明授权
    • Position sensorless motor control apparatus
    • 无位置传感器电机控制装置
    • US06462491B1
    • 2002-10-08
    • US09491382
    • 2000-01-26
    • Tomoyuki IijimaKazushige NarazakiToru TazawaYukinori Maruyama
    • Tomoyuki IijimaKazushige NarazakiToru TazawaYukinori Maruyama
    • H02P618
    • H02P9/18H02P2203/05
    • A position sensorless motor control apparatus is provided that achieves high resolution and high accuracy angle estimation, achieves angle estimation even in the presence of phase voltage saturation, and achieves high accuracy angle estimation even when a back electromotive force constant changes. An angle estimating unit which generates estimated rotor angle comprises: an estimation phase selecting unit for selecting an estimation phase designating the stator winding phase to be used for the generation of the estimated angle; a deviation generating unit for generating, based on the estimated angle and phase voltage value, a deviation relative to a model expressed by a phase voltage equation of the estimation phase; an angle correcting unit for correcting the estimated angle so that the deviation converges to zero; and an estimated coefficient value correcting unit for correcting an estimated coefficient value which is the estimated value of a coefficient in the phase voltage equation.
    • 提供一种实现高分辨率和高精度角度估计的位置无传感器电动机控制装置,即使在存在相电压饱和的情况下也能够进行角度估计,并且即使当反电动势常数改变时也能够实现高精度角度估计。 产生估计转子角度的角度估计单元包括:估计相位选择单元,用于选择用于产生估计角度的定子绕组相位的估计阶段; 偏差产生单元,用于基于估计的角度和相位电压值,生成相对于由所述估计阶段的相电压方程表示的模型的偏差; 角度校正单元,用于校正所述估计角度,使得所述偏差收敛到零; 以及估计系数值校正单元,用于校正作为相电压方程式中的系数的估计值的估计系数值。
    • 10. 发明授权
    • Brushless motor
    • 无刷电机
    • US5729102A
    • 1998-03-17
    • US673399
    • 1996-06-28
    • Makoto GotouKazushige NarazakiTomokuni Iijima
    • Makoto GotouKazushige NarazakiTomokuni Iijima
    • G11B19/20G11B19/28H02P6/00H02P6/14H02P6/16H02P7/00
    • H02P6/16G11B19/2009G11B19/28H02P6/14H02P6/28
    • The brushless motor has: a field unit having a rotor permanent magnet (12); three-phase driving windings (20A, 20B, and 20C) of the stator; driving transistors for supplying a power to the driving windings; a driving command unit (43) for generating sinusoidal driving command signals; and a driving unit which supplies to the driving windings sinusoidal driving currents in accordance with the driving command signals. The driving command unit (43) consists of: a time interval measurement device (42) which measures timing intervals from a pulse signal of a rotation detector (41), the timing intervals being inversely proportional to the rotational speed of the rotor; and a driving command generation unit (43) which changes an estimated electric angle at time intervals responding to the measurement result of the time interval measurement device thereby to generate the sinusoidal driving command signals corresponding to the estimated electric angle.
    • 无刷电动机具有:具有转子永磁体的励磁单元; 定子的三相驱动绕组(20A,20B和20C); 用于向驱动绕组提供电力的驱动晶体管; 用于产生正弦驱动指令信号的驱动指令单元(43) 以及驱动单元,其根据驱动指令信号向驱动绕组提供正弦驱动电流。 驱动指令单元(43)包括:时间间隔测量装置(42),其从旋转检测器(41)的脉冲信号测量定时间隔,定时间隔与转子的转速成反比; 以及驱动指令生成单元,其根据时间间隔测量装置的测量结果改变对时间间隔的估计电角度,从而产生与估计电角度对应的正弦驱动指令信号。