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    • 1. 发明授权
    • DC motor
    • 直流电机
    • US07307368B2
    • 2007-12-11
    • US09877217
    • 2001-06-11
    • Ikuya TsurukawaYoshimi OhnoKenji Koyama
    • Ikuya TsurukawaYoshimi OhnoKenji Koyama
    • H02K13/00H01R39/04
    • H02K13/006H01R39/06H01R39/24
    • A direct current motor including a rotor having a rotation shaft and rotor coils, a stator configured to apply a magnetic field to the rotor via magnetic poles of the stator opposing magnetic poles of the rotor, an electrical parts mounting base board fixed on the rotation shaft such that the rotation shaft perpendicularly intersects the electrical parts mounting base board, and a commutator having a contact electrode part formed with a plane conductive layer pattern and connected to the rotor coils. The contact electrode part is formed on the electrical parts mounting base board. The direct current motor further includes a pair of electrode brushes in sliding contact with the contact electrode part of the commutator and configured to supply electric power to the rotor coils though the commutator.
    • 一种直流电动机,包括具有旋转轴和转子线圈的转子,定子,被配置为通过转子的相对磁极的定子的磁极向转子施加磁场,固定在旋转轴上的电气部件安装基板 使得旋转轴与电气部件安装基板垂直相交,以及换向器,其具有形成有平面导电层图案并连接到转子线圈的接触电极部分。 接触电极部形成在电气部件安装基板上。 直流电动机还包括与换向器的接触电极部分滑动接触的一对电极刷,并且构造成通过换向器向转子线圈提供电力。
    • 3. 发明授权
    • DC motor rotation control apparatus
    • 直流电机旋转控制装置
    • US06628893B2
    • 2003-09-30
    • US09753552
    • 2001-01-04
    • Yoshimi OhnoIkuya TsurukawaKenji Koyama
    • Yoshimi OhnoIkuya TsurukawaKenji Koyama
    • H02P500
    • H02K23/66H02P1/18H02P7/0094H02P7/04H02P7/28
    • A direct current motor rotation control apparatus, a method and device for controlling a rotational speed of a direct current motor, and an apparatus having the direct current motor rotation control apparatus. The apparatus and device control rotational operations of a direct current motor such that the direct current motor rotation control apparatus includes at least one rotation detecting brush which detects a signal indicative of an operation of the direct current motor, a motor driving circuit which drives the direct current motor by applying the direct current drive voltage to the pair of electrode brushes, a reference voltage generating device which generates a reference voltage a comparator which compares a voltage detected by the rotation detecting brush with the reference voltage generated by the reference voltage generating device and produces an output comparison voltage, and a motor control circuit which adjusts the direct current drive voltage based on the output comparison voltage. The direct current motor includes including a stator, a rotor with a rotation shaft and rotor coils, a commutator connected to the rotor coils, and a pair of electrode brushes in sliding contact with the commutator. The at least one rotation detecting brush contacts the commutator at a different axial position from an axial position contacted by the pair of electrode brushes. The comparator can compare a voltage detected by the rotation detecting brush with the reference voltage generated by the reference voltage generating device and produces as a comparison voltage output pulses of voltage. As such, the motor control circuit can determine an instantaneous rotational speed and adjust the drive voltage to the pair of electrode brushes accordingly.
    • 用于控制直流电动机的转速的直流电动机旋转控制装置,方法和装置以及具有直流电动机旋转控制装置的装置。 该装置和装置控制直流电动机的旋转操作,使得直流电动机旋转控制装置包括至少一个检测表示直流电动机的操作的信号的旋转检测刷,驱动直流电动机的电动机驱动电路 通过向一对电极刷施加直流驱动电压的基准电压产生装置,产生参考电压的比较器,比较器,其将由旋转检测刷检测的电压与由参考电压产生装置产生的参考电压进行比较;以及比较器, 产生输出比较电压,以及基于输出比较电压来调节直流驱动电压的电动机控制电路。 直流电动机包括定子,具有旋转轴的转子和转子线圈,连接到转子线圈的换向器和与换向器滑动接触的一对电极刷。 所述至少一个旋转检测刷在与所述一对电极刷接触的轴向位置不同的轴向位置处接触所述换向器。 比较器可以将由旋转检测刷检测的电压与由参考电压产生装置产生的参考电压进行比较,并产生电压的比较电压输出脉冲。 因此,电动机控制电路可以确定瞬时转速并相应地调节一对电极刷的驱动电压。