公开(公告)号：US5907226A

公开(公告)日：1999-05-25

申请号：US018070

申请日：1998-02-03

申请人： Hiroshi Ohsawa ,  Shinichi Ohi ,  Kzuyoshi Horiuchi ,  Kouji Ando

发明人： Hiroshi Ohsawa ,  Shinichi Ohi ,  Kzuyoshi Horiuchi ,  Kouji Ando

IPC分类号： H02P6/08 ,  H02P6/14 ,  H02P6/10

CPC分类号： H02P6/14 ,  H02P6/15

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5901268A

公开(公告)日：1999-05-04

申请号：US18965

申请日：1998-02-05

申请人： Kouji Ando ,  Kzuyoshi Horiuchi ,  Shinichi Ohi ,  Hiroshi Ohsawa

发明人： Kouji Ando ,  Kzuyoshi Horiuchi ,  Shinichi Ohi ,  Hiroshi Ohsawa

IPC分类号： H02P6/08 ,  H02P6/20 ,  H02P5/17

CPC分类号： H02P6/085

摘要： In order to prevent the performance of a motor from deteriorating due to a change in which the rotation rate of its rotor is to be increased suddenly, in a brushless motor in which a drive pulse whose pulse width is modulated in correspondence to a rotation rate setting signal input from the outside is formed and switching control is performed on the current supplied to the exciting coils by using output signals from the Hall elements that detect the position of the rotor and the drive pulse, the pulse width of the drive pulse is changed gradually and greatly until it reaches the pulse width that corresponds to the rotation rate setting signal when the upward change in the rotation rate of the rotor is to be large.

摘要翻译： 为了防止由于其转子的旋转速度突然增加而导致电动机的性能劣化的无刷电动机，其中脉冲宽度相应于转速设定被调制的驱动脉冲 形成来自外部的信号输入，并且通过使用来自检测转子位置的霍尔元件和驱动脉冲的输出信号，对提供给励磁线圈的电流进行切换控制，驱动脉冲的脉冲宽度逐渐变化 并且大大地直到当转子的旋转速度向上变化较大时达到对应于转速设定信号的脉冲宽度。

公开(公告)号：US5936364A

公开(公告)日：1999-08-10

申请号：US18967

申请日：1998-02-05

申请人： Hiroshi Ohsawa ,  Shinichi Ohi ,  Kzuyoshi Horiuchi ,  Kouji Ando

发明人： Hiroshi Ohsawa ,  Shinichi Ohi ,  Kzuyoshi Horiuchi ,  Kouji Ando

IPC分类号： H02P6/00 ,  H02P6/08 ,  H02P6/14

CPC分类号： H02P29/026 ,  H02P6/00 ,  H02P6/08 ,  H02P6/15

摘要： A pulse width of a drive pulse of a brushless motor is modulated in correspondence to a setting signal for setting the rotation rate. Switching control for the current supplied to exciting coils is implemented by using an output signal from Hall elements for detecting the position of the rotor and the drive pulse. Correction of the pulse width of the drive pulse is implemented to ensure that the average voltage is maintained at a constant level even when the source voltage fluctuates so that stable rotation can be maintained over the entire rotation rate range even when the source voltage supplied to the brushless motor fluctuates and so that the fuse can be prevented from melting and the motor can be prevented from becoming damaged, which may otherwise be caused by a fluctuating source voltage.

摘要翻译： 无刷电动机的驱动脉冲的脉冲宽度对应于用于设定转速的设定信号进行调制。 通过使用来自霍尔元件的输出信号来检测提供给励磁线圈的电流的开关控制，用于检测转子的位置和驱动脉冲。 实现驱动脉冲的脉冲宽度的校正，以确保平均电压即使当电源电压波动时仍保持恒定电平，使得即使在提供给 无刷电动机波动，从而可以防止熔丝熔化，并且可以防止电动机损坏，否则可能由电源电压波动引起。