利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

65 条记录 (耗时 0.028 秒)

    Inverter control apparatus using a two-phase modulation method
    6.
    发明授权
    Inverter control apparatus using a two-phase modulation method 失效
    变频调速装置采用两相调制方式

    公开(公告)号：US5650708A

    公开(公告)日：1997-07-22

    申请号：US401988

    申请日：1995-03-10

    申请人： Takeshi Sawada ,  Hiroshi Fujita ,  Hiroya Tsuji ,  Kanji Takeuchi ,  Tsuneyuki Egami

    发明人： Takeshi Sawada ,  Hiroshi Fujita ,  Hiroya Tsuji ,  Kanji Takeuchi ,  Tsuneyuki Egami

    IPC分类号： B60L11/18 ,  H02M7/5387 ,  H02P7/00

    CPC分类号： B60L11/1803 ,  H02M7/53875 ,  Y02T10/7005

    摘要： An inverter control apparatus for driving a polyphase AC motor for preventing abrupt changes in motor drive currents when switching of one phase is stopped. The apparatus includes a signal generator for generating duty signals of drive signals of respective phases on the basis of a generated reference waveform and a signal modifier for selecting one of the duty signals of one phase, holding it at a predetermined level, and modifying the duty signals of other phases according to the value required to hold the selected duty signal. On the basis of three-phase signal voltage levels, a decision is made on voltage fixing phase intervals by a phase decision circuit, and shift values are determined by an adder at every voltage fixing phase interval. Shift values are selected by a multiplexer according to the outputs of the phase decision circuit and added to triangular wave voltage. Resultant sum values are compared with the three-phase signal voltages to form a three-phase PWM signal.

    摘要翻译： 用于驱动多相交流电动机的逆变器控制装置，用于防止一相切换时电动机驱动电流的突然变化。 该装置包括：信号发生器，用于基于产生的参考波形产生各相的驱动信号的占空比信号;以及信号修正器，用于选择一个相位的占空比信号，将其保持在预定电平，并修改占空比 根据保持所选择的占空比信号所需的值的其他相位的信号。 基于三相信号电压电平，通过相位判定电路对电压固定相位间隔进行判定，并且在每个电压固定相间隔时由加法器确定偏移值。 移位值由多路复用器根据相位判定电路的输出选择，并加到三角波电压上。 将结果和值与三相信号电压进行比较，形成三相PWM信号。

    Sensorless control system and method of permanent magnet synchronous motor
    7.
    发明授权
    Sensorless control system and method of permanent magnet synchronous motor 失效
    永磁同步电机无传感器控制系统及方法

    公开(公告)号：US5903128A

    公开(公告)日：1999-05-11

    申请号：US792736

    申请日：1997-01-31

    申请人： Hiroyuki Sakakibara ,  Tomoya Okuno ,  Kazuyoshi Obayashi ,  Hiroya Tsuji

    发明人： Hiroyuki Sakakibara ,  Tomoya Okuno ,  Kazuyoshi Obayashi ,  Hiroya Tsuji

    IPC分类号： H02P6/18 ,  H02P6/16

    CPC分类号： H02P6/18

    摘要： If the magnitude of a voltage command vector to a motor driver is smaller than a preset value in a control period, in each of a predetermined number of subsequent control periods (a compensation period), a pulse voltage vector is added to the voltage command vector so as to make substantially zero the average value of the added pulse voltage vectors during the compensation periods, and the compensated voltage command vector is used for the subsequent calculation. Also, two direction data for each phase winding are stored at the center of each of the two dead times following the edges of a voltage command pulse in each control period. An estimated phase voltage is calculated from the last voltage command pulse width, a phase voltage fluctuation during the two dead time of each control period and the stored direction data. The rotor position angle is precisely calculated from the estimated phase voltage.

    摘要翻译： 如果在控制周期中电动机驱动器的电压指令矢量的大小小于预设值，则在预定数量的后续控制周期（补偿周期）中的每一个中，将脉冲电压矢量加到电压指令矢量 以便在补偿周期期间使相加的脉冲电压矢量的平均值基本上为零，并且补偿的电压命令矢量用于随后的计算。 此外，每个相位绕组的两个方向数据被存储在每个控制周期中的电压指令脉冲的边缘之后的两个死区时间的每一个的中心。 根据最后的电压指令脉冲宽度，每个控制周期的两个死区时间内的相电压波动以及所存储的方向数据计算估计的相电压。 从估计的相电压精确地计算转子位置角度。

    Sensor-less control apparatus for permanent magnet synchronous motor
    8.
    发明授权
    Sensor-less control apparatus for permanent magnet synchronous motor 失效
    无永磁同步电机无传感器控制装置

    公开(公告)号：US5726549A

    公开(公告)日：1998-03-10

    申请号：US599132

    申请日：1996-02-09

    申请人： Tomoya Okuno ,  Hiroyuki Sakakibara ,  Hiroya Tsuji ,  Kazuyoshi Obayashi

    发明人： Tomoya Okuno ,  Hiroyuki Sakakibara ,  Hiroya Tsuji ,  Kazuyoshi Obayashi

    IPC分类号： H02P21/00 ,  H02P6/08 ,  H02P21/14 ,  H02P27/04 ,  H02P1/46

    CPC分类号： H02P21/18 ,  H02P21/26 ,  H02P6/08

    摘要： A sensor-less control apparatus is designed for a permanent magnet synchronous motor having multiple-phase armature windings and a rotor. The sensor-less control apparatus includes a first device for calculating a rotational angle and an angular velocity of the rotor from phase currents and phase voltages of the armature windings. A second device is operative for controlling energizations of the armature windings in response to the rotational angle and the angular velocity calculated by the first device. A third device is operative for correcting the rotational angle calculated by the first device into a correction-resultant rotational angle and informing the second device of the correction-resultant rotational angle, and for feeding back information of the correction-resultant rotational angle to the first device. A fourth device contained in the third device is operative for low-pass-filtering the rotational angle calculated by the first device and changing the rotational angle into a filtering-resultant rotational angle. A fifth device contained in the third device for, in cases where a previous rotational angle outputted from the fourth device and the rotational angle calculated by the first device are not in a same period, correcting the previous rotational angle into a correction-resultant previous rotational angle and informing the fourth device of the correction-resultant previous rotational angle.

    摘要翻译： 无传感器控制装置设计用于具有多相电枢绕组和转子的永磁同步电动机。 无传感器控制装置包括用于根据电枢绕组的相电流和相电压计算转子的旋转角度和角速度的第一装置。 第二装置用于响应于由第一装置计算的旋转角度和角速度来控制电枢绕组的通电。 第三装置用于将由第一装置计算出的旋转角度校正为校正结果旋转角度，并向第二装置通知校正结果旋转角度，并且将校正结果旋转角度的信息反馈到第一装置 设备。 包含在第三装置中的第四装置用于低通滤波由第一装置计算出的旋转角度并将旋转角度改变成滤波结果旋转角度。 在第三装置中包含的第五装置，在从第四装置输出的先前旋转角度和由第一装置计算的旋转角度不是相同周期的情况下，将先前旋转角度校正为校正结果先前旋转 角度并通知第四装置校正结果的先前旋转角度。

    Method and apparatus for sensor-less control of permanent magnet synchronous motor
    9.
    发明授权
    Method and apparatus for sensor-less control of permanent magnet synchronous motor 失效
    永磁同步电机无传感器控制方法及装置

    公开(公告)号：US5903129A

    公开(公告)日：1999-05-11

    申请号：US856588

    申请日：1997-05-15

    申请人： Tomoya Okuno ,  Hiroyuki Sakakibara ,  Hiroya Tsuji ,  Kazuyoshi Obayashi

    发明人： Tomoya Okuno ,  Hiroyuki Sakakibara ,  Hiroya Tsuji ,  Kazuyoshi Obayashi

    IPC分类号： H02P21/14 ,  H02P1/46

    CPC分类号： H02P21/18

    摘要： A permanent magnet synchronous motor having multiple-phase armature windings and a rotor is subjected to sensor-less control. Phase voltages are generated in response to voltage command values. The generated phase voltages are applied to the armature windings. Phase currents through the armature windings are detected. The detected phase currents depend on the voltage command values. An angular position and an angular velocity of the rotor are calculated from the detected phase currents. The voltage command values are adjusted in response to the calculated angular position and the calculated angular velocity of the rotor to implement feedback control of the motor. An angular velocity of the rotor is estimated from a time-domain variation in the calculated angular position of the rotor. A determination is made as to whether or not the calculated angular velocity of the rotor and the estimated angular velocity of the rotor are substantially equal to each other. The calculated angular position of the rotor is changed by a predetermined phase value and is thereby corrected when it is determined that the calculated angular velocity of the rotor and the estimated angular velocity of the rotor are not substantially equal to each other.

    摘要翻译： 具有多相电枢绕组和转子的永磁同步电动机经受无传感器控制。 响应于电压指令值产生相电压。 产生的相电压施加到电枢绕组。 检测通过电枢绕组的相电流。 检测到的相电流取决于电压指令值。 从检测到的相电流计算转子的角位置和角速度。 电压指令值根据计算的角位置和计算出的转子角速度进行调整，以实现电动机的反馈控制。 根据计算出的转子角位置的时域变化估计转子的角速度。 确定计算出的转子角速度和转子的估计角速度是否基本相等。 计算出的转子的角度位置改变预定的相位值，并且因此当确定计算出的转子角速度和转子的估计角速度基本上彼此不相等时被校正。

    ORGANIC ELECTROLUMINESCENT ELEMENT
    10.
    发明申请
    ORGANIC ELECTROLUMINESCENT ELEMENT 有权
    有机电致发光元件

    公开(公告)号：US20140008631A1

    公开(公告)日：2014-01-09

    申请号：US14006442

    申请日：2012-03-12

    申请人： Hiroya Tsuji ,  Varutt Kittichungchit ,  Nobuhiro Ide

    发明人： Hiroya Tsuji ,  Varutt Kittichungchit ,  Nobuhiro Ide

    IPC分类号： H01L51/52

    CPC分类号： H01L51/5203 ,  H01L51/5044 ,  H01L2251/5361 ,  H01L2251/558

    摘要： The present invention proposes a white organic electroluminescent element which is a multiunit element capable of emitting high intensity light that is important to a light source for lighting use, and can have an extended lifetime while suppressing deterioration in luminance. The organic electroluminescent element includes: a transparent electrode; and a first light-emitting unit including a blue fluorescent light-emitting layer containing a blue fluorescent light-emitting material; an intermediate layer; and a second light-emitting unit including a red phosphorescent light-emitting layer containing a red phosphorescent light-emitting material and a green phosphorescent light-emitting layer containing a green phosphorescent light-emitting material; and a reflecting electrode, wherein: the first and second light-emitting units are stacked having the intermediate layer interposed therebetween; and a film thickness (tR) of the red phosphorescent light-emitting layer and a film thickness (tG) of the green phosphorescent light-emitting layer satisfy a relation of 5*tR≦tG.

    摘要翻译： 本发明提出了一种白色有机电致发光元件，其是能够发射对照明用光源很重要的高强度光的多单元元件，并且可以在抑制亮度劣化的同时具有延长的寿命。 有机电致发光元件包括：透明电极; 以及第一发光单元，其包括含有蓝色荧光发光材料的蓝色荧光发光层; 中间层 以及第二发光单元，其包括含有红色磷光发光材料的红色磷光发光层和含有绿色磷光发光材料的绿色磷光发光层; 和反射电极，其中：所述第一发光单元和所述第二发光单元层叠，所述第一发光单元和所述第二发光单元之间插入有所述中间层; 并且红色磷光发光层的膜厚度（tR）和绿色磷光发光层的膜厚度（tG）满足关系式5 * tR @ tG。