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    • 3. 发明授权
    • Control apparatus for brushless motor
    • 无刷电机控制装置
    • US4641066A
    • 1987-02-03
    • US780970
    • 1985-09-27
    • Masami NagataSumio YanaseYousuke Setaka
    • Masami NagataSumio YanaseYousuke Setaka
    • H02P6/20H02P6/02
    • H02P6/187H02P6/20
    • A control apparatus detects a suitable starting point during rotational oscillation of a rotor at the start of a brushless motor by combining the polarity of a counter electromotive force generated in an armature coil of an armature winding of the brushless motor for a nonexcited phase due to the rotational oscillation of the rotor (when armature coils for particular phases are excited at the start of the brushless motor) with the pulse edge of an excitation switchover signal obtained from the potential of a neutral point of the armature winding having the armature coils connected in star-connection and that of a neutral point of a detecting resistance circuit having resistors connected in star-connection. Each of the resistors of the resistance circuit is arranged in parallel with a corresponding one of the armature coils the armature winding. By driving the brushless motor from the detected suitable starting point, it is possible to effect smooth and quick control of the starting operation of the brushless motor.
    • 控制装置通过将无刷电动机的电枢绕组的电枢线圈中产生的反电动势的极性由于无功电动机的非励磁相组合而在无刷电动机起动时的转子的旋转振荡期间检测合适的起始点 转子的旋转振动(用于特定相的电枢线圈在无刷电动机起动时激励),其中从具有以星形连接的电枢线圈的电枢绕组的中性点的电位获得的激励切换信号的脉冲边缘 与具有以星形连接方式连接的电阻的检测电阻电路的中性点连接。 电阻电路的每个电阻器与电枢绕组中的相应一个电枢绕组平行布置。 通过从检测出的合适起点驱动无刷电动机,能够对无刷电动机的起动动作进行平滑,快速的控制。
    • 4. 发明授权
    • Torque detection apparatus
    • 扭矩检测装置
    • US4881414A
    • 1989-11-21
    • US192187
    • 1988-05-10
    • Yousuke SetakaSumio YanaseKanji TakeuchiMasahiko Miyahara
    • Yousuke SetakaSumio YanaseKanji TakeuchiMasahiko Miyahara
    • B62D5/04B62D6/10G01L3/10G01L5/22
    • G01L5/221B62D6/10G01L3/104G01L3/105
    • A torque detection apparatus for measuring a torque applied between a drive shaft and an output shaft which is applicable to an electric power steering system of a motor vehicle. The torque detection apparatus is provided between the drive and output shafts and comprises first and second rotating bodies which are respectively at one end portions coupled fixedly to the drive and output shafts, the first rotating body being rotatable in accordance with rotation of the drive shaft and the second rotating body being rotatable in accordance with rotation of said output shaft. The first and second rotating bodies are shaped cylindrically and the first rotating body has on its outer circumferential surface magnetic toothed portions and the second rotating body has on its inner circumferential surface magnetic toothed portions. The first and second rotating bodies are disposed coaxially so that the magnetic toothed portions are magnetically engaged with each other so as to form a first magnetic flux path and a second magnetic flux path. The torque between the drive and output shafts is measured on the basis of the difference between the amounts of the magnetic fluxes passing through the first and second magnetic flux paths.
    • 一种扭矩检测装置,用于测量施加在可应用于机动车辆的电动助力转向系统的驱动轴和输出轴之间的转矩。 转矩检测装置设置在驱动和输出轴之间,并且包括分别在固定地连接到驱动和输出轴的一个端部处的第一和第二旋转体,第一旋转体可根据驱动轴的旋转而旋转, 所述第二旋转体可根据所述输出轴的旋转而旋转。 第一旋转体和第二旋转体成圆筒状,第一旋转体的外周面具有磁性齿部,第二旋转体在其内周面具有磁性齿部。 第一和第二旋转体同轴地设置,使得磁齿部彼此磁性地接合,以形成第一磁通路径和第二磁通路径。 基于通过第一和第二磁通路径的磁通量的差异来测量驱动和输出轴之间的扭矩。