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热词
    • 7. 发明公开
    • Method and system for electronic braking of a motor
    • Verfahren und System zur elektronischen Bremsung eines Motors
    • EP2433757A3
    • 2013-09-11
    • EP11183160.8
    • 2011-09-28
    • Black & Decker Inc.
    • Pant, Pradeep M
    • B25F5/00
    • B25B23/147B25F5/00H02P3/14H02P6/30H02P23/20
    • A power tool includes a housing, a brushless DC motor housed inside the housing, a power supply, a control unit, and an input unit such as a trigger switch actuated by a user. The control unit controls the commutation of the motor through a series of power switches coupled to the power supply. The control unit initiates electronic braking of the motor after occurrence of a condition in the input unit, such as trigger release or reduced speed, indicative of the power tool shut-down. A mechanism is provided to power the control unit for a predetermined amount of time after the detection of the condition from the input unit in order to complete the electronic braking of the motor.
    • 电动工具包括容纳在工具壳体内的无刷直流电动机,输入单元和控制单元。 电动机包括转子,定子和至少一个传感器,定位成感测定子内的转子的旋转位置的状态。 控制单元通过耦合到电源的一系列电源开关来控制电动机的换向。 控制单元从传感器接收当前传感器状态,并从用户选择的速度从输入单元接收,并且使用用户选择的速度和当前传感器状态来确定电动机是否具有反向。 如果电机反转方向,直到从传感器接收到适当的电流传感器状态,控制单元禁止电动机换向。
    • 8. 发明公开
    • Method and system for electronic braking of a motor
    • Elektrowerkzeug und Verfahren zum Steuern eines汽车内燃机Elektrowerkzeugs
    • EP2433757A2
    • 2012-03-28
    • EP11183160.8
    • 2011-09-28
    • Black & Decker Inc.
    • Pant, Pradeep M
    • B25F5/00
    • B25B23/147B25F5/00H02P3/14H02P6/30H02P23/20
    • A power tool includes a housing, a brushless DC motor housed inside the housing, a power supply, a control unit, and an input unit such as a trigger switch actuated by a user. The control unit controls the commutation of the motor through a series of power switches coupled to the power supply. The control unit initiates electronic braking of the motor after occurrence of a condition in the input unit, such as trigger release or reduced speed, indicative of the power tool shut-down. A mechanism is provided to power the control unit for a predetermined amount of time after the detection of the condition from the input unit in order to complete the electronic braking of the motor.
    • 电动工具包括壳体,容纳在壳体内的无刷直流电动机,电源,控制单元以及诸如由用户驱动的触发开关的输入单元。 控制单元通过耦合到电源的一系列电源开关来控制电动机的换向。 控制单元在输入单元中发生状态之后发起电动机的电子制动,例如触发释放或减速,表示电动工具关闭。 提供一种机构,用于在从输入单元检测到条件之后给控制单元供电预定时间量,以完成电动机的电子制动。