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    • 2. 发明授权
    • Motor starting method and apparatus
    • 电机启动方法和装置
    • US5418436A
    • 1995-05-23
    • US109752
    • 1993-08-19
    • Nickolas C. Apuzzo
    • Nickolas C. Apuzzo
    • H02K3/28H02K21/22H02K29/00H02P1/26H02P5/06
    • H02P25/188H02K3/28H02P1/26H02K21/22
    • A method for starting and operating an electric motor such as the spindle motor of a disk drive assembly employs a segmented stator winding. On startup, the winding segments are connected in series in order to maximize torque. Motor speed is detected, and when a predetermined speed is reached, the segments are connected in parallel to reduce the effective number of winding turns and maintain a control voltage for motor speed control. Switching of the winding segments can be by active elements such as FETs or by passive reactive elements responding directly to motor speed. For more gradual motor torque constant control, the winding may have more than two segments.
    • 用于启动和操作诸如盘驱动组件的主轴电动机的电动机的方法采用分段定子绕组。 在启动时,绕组段串联连接,以使扭矩最大化。 检测到电机速度,当达到预定速度时,段并联连接,以减少匝数的有效数,并保持电机速度控制的控制电压。 绕组段的切换可以是诸如FET之类的有源元件或直接响应于电机速度的被动反应元件。 对于更多的电机转矩恒定控制,绕组可能有两个以上的段。