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    • 44. 发明授权
    • Drive control apparatus for brushless motor
    • 无刷电机驱动控制装置
    • US5907226A
    • 1999-05-25
    • US018070
    • 1998-02-03
    • Hiroshi OhsawaShinichi OhiKzuyoshi HoriuchiKouji Ando
    • Hiroshi OhsawaShinichi OhiKzuyoshi HoriuchiKouji Ando
    • H02P6/08H02P6/14H02P6/10
    • H02P6/14H02P6/15
    • An object of preventing a reduction in the output efficiency of a motor in the high speed rotation range and reducing the noise of the motor in the low speed rotation range is to be achieved. Since, if a signal that corresponds to the rotation rate has a value equal to or smaller than a specific value, the timing with which a switch performs switching is retarded relative to the timing used when the signal corresponding to the rotation rate has a value larger than the specific value, once the operation shifts to the low speed rotation range, the switching timing is retarded to shift from the setting that gives priority to efficiency, to the setting for achieving noise reduction as long as the switching timing is set in advance so that an optimal output efficiency is achieved in the high speed rotation range.
    • 要实现防止在高速旋转范围内电动机的输出效率降低并且降低电动机在低速旋转范围内的噪声的目的。 由于如果对应于旋转速度的信号具有等于或小于特定值的值,则开关执行切换的定时相对于当与旋转速度相对应的信号具有较大值时所使用的定时被延迟 除了特定值以外,一旦操作转移到低速旋转范围,只要切换定时被预先设定,则切换定时被延迟从优先级到效率的设置转换到用于实现噪声降低的设置 在高速旋转范围内实现了最佳的输出效率。