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    Method and system for electronic braking of a motor
    4.
    发明授权
    Method and system for electronic braking of a motor 有权
    电动机电子制动方法及系统

    公开(公告)号：US08587231B2

    公开(公告)日：2013-11-19

    申请号：US13247250

    申请日：2011-09-28

    申请人： Pradeep M. Pant

    发明人： Pradeep M. Pant

    IPC分类号： H02P3/00

    CPC分类号： B25B23/147 ,  B25F5/00 ,  H02P3/14 ,  H02P6/30 ,  H02P23/20

    摘要： 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.

    摘要翻译： 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功率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，例如指示电动工具关闭的触发释放或降低速度。 提供了一种机构，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。

    METHOD AND SYSTEM FOR ELECTRONIC BRAKING OF A MOTOR
    5.
    发明申请
    METHOD AND SYSTEM FOR ELECTRONIC BRAKING OF A MOTOR 有权
    电动汽车制动方法与系统

    公开(公告)号：US20120074881A1

    公开(公告)日：2012-03-29

    申请号：US13247250

    申请日：2011-09-28

    申请人： Pradeep M. Pant

    发明人： Pradeep M. Pant

    IPC分类号： H02P3/12 ,  H02P3/08

    CPC分类号： B25B23/147 ,  B25F5/00 ,  H02P3/14 ,  H02P6/30 ,  H02P23/20

    摘要： 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.

    摘要翻译： 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功率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，例如指示电动工具关闭的触发释放或降低速度。 提供了一种机构，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。

    Method and system for prevention of motor reversal
    6.
    发明授权
    Method and system for prevention of motor reversal 有权
    防止运动反转的方法和系统

    公开(公告)号：US08587230B2

    公开(公告)日：2013-11-19

    申请号：US13247288

    申请日：2011-09-28

    申请人： Pradeep M. Pant ,  James Goble

    发明人： Pradeep M. Pant ,  James Goble

    IPC分类号： H02P3/00

    CPC分类号： B25B23/147 ,  B25F5/00 ,  H02P3/14 ,  H02P6/30 ,  H02P23/20

    摘要： A power tool includes a brushless DC motor housed inside a tool housing, an input unit, and a control unit. The motor includes a rotor, a stator, and at least one sensor positioned to sense a state of the rotational position of the rotor inside the stator. A control unit controls commutation of the motor through a series of power switches coupled to the power supply. The control unit receives a current sensor state from the sensor and a user-selected speed from the input unit and determines whether the motor has reversed direction using the user-selected speed and the current sensor state. The control unit disables commutation of the motor if the motor has reversed direction until a proper current sensor state is received from the sensor.

    摘要翻译： 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，并从输入单元接收用户选择的速度，并使用用户选择的速度和当前的传感器状态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。

    METHOD AND SYSTEM FOR PREVENTION OF MOTOR REVERSAL
    7.
    发明申请
    METHOD AND SYSTEM FOR PREVENTION OF MOTOR REVERSAL 有权
    防止电机反转的方法和系统

    公开(公告)号：US20120074878A1

    公开(公告)日：2012-03-29

    申请号：US13247288

    申请日：2011-09-28

    申请人： Pradeep M. Pant ,  James Goble

    发明人： Pradeep M. Pant ,  James Goble

    IPC分类号： H02P6/22 ,  H02H7/097

    CPC分类号： B25B23/147 ,  B25F5/00 ,  H02P3/14 ,  H02P6/30 ,  H02P23/20

    摘要： A power tool includes a brushless DC motor housed inside a tool housing, an input unit, and a control unit. The motor includes a rotor, a stator, and at least one sensor positioned to sense a state of the rotational position of the rotor inside the stator. A control unit controls commutation of the motor through a series of power switches coupled to the power supply. The control unit receives a current sensor state from the sensor and a user-selected speed from the input unit and determines whether the motor has reversed direction using the user-selected speed and the current sensor state. The control unit disables commutation of the motor if the motor has reversed direction until a proper current sensor state is received from the sensor.

    摘要翻译： 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，并从输入单元接收用户选择的速度，并使用用户选择的速度和当前的传感器状态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。