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    • 8. 发明公开
    • Electric sander and motor control therefor
    • Elektrische Schleifmaschine und deren Motorsteuerung
    • EP2174750A1
    • 2010-04-14
    • EP10151706.8
    • 2005-04-12
    • Black & Decker Inc.
    • Deshpande, UdayGorti, Bhanuprasad V.Melvin, Jason RRice, Gregory A.Wikle, David LWaiker, Shailesh PHilsher, William F
    • B24B23/00
    • B24B23/03
    • A hand held orbital sander, comprising:
      a. a housing having an electronically commutated motor disposed therein and an orbit mechanism disposed beneath the housing;
      b. a motor controller coupled to the motor;
      c. a current sensor coupled to the motor controller that provides a signal indicative of motor current; and
      d. the motor controller changing the speed at which it runs the motor from an idle speed to a sanding speed based upon at least one of change in motor current and change in motor speed as the sander is removed from a work piece and changing the speed at which it runs the motor from sanding speed to idle speed based upon at least one of change in motor current and change in motor speed as the sander is applied to the work piece.
    • 一种手持轨道砂光机,包括:a。 具有设置在其中的电子换向马达的壳体和设置在壳体下方的轨道机构; 湾 耦合到电动机的电动机控制器; C。 耦合到电动机控制器的电流传感器,其提供指示电动机电流的信号; 和d。 电动机控制器基于电动机电流的变化和电动机速度的变化中的至少一个将从电动机运行电动机的速度改变为碾磨速度,因为砂光机从工件上移除并改变其速度 基于磨砂机施加到工件上的电动机电流的变化和电动机速度的变化中的至少一个,电动机将其从打磨速度运行到怠速。