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    VEHICLE WINDOW LIFT CONTROL SYSTEM AND CONTROL METHOD
    1.
    发明申请
    VEHICLE WINDOW LIFT CONTROL SYSTEM AND CONTROL METHOD 审中-公开

    公开(公告)号：US20170254136A1

    公开(公告)日：2017-09-07

    申请号：US15446292

    申请日：2017-03-01

    申请人： Johnson Electric S.A.

    发明人： Yue LI ,  Jing Xin SHI ,  Rui Feng QIN ,  Yong Gang LI

    IPC分类号： E05F15/75 ,  E05F15/695 ,  E05F15/697

    CPC分类号： E05F15/75 ,  E05F15/40 ,  E05F15/695 ,  E05F15/697 ,  E05Y2201/434 ,  E05Y2400/32 ,  E05Y2400/334 ,  E05Y2900/55

    摘要： A vehicle window lift control system includes a window lift motor, a motor drive/control module, an inverter, a rotor position sensing unit, and an anti-pinch module. The window lift motor is a brushless direct current motor. The anti-pinch module detennines whether or not the vehicle window is in an anti-pinch area based on position feedback signals generated by a rotor position sensing unit that is inherently included in the brushless direct current motor. When the vehicle window is in the anti-pinch area, an obstacle judgment unit is initiated. When there is an obstacle, an anti-pinch instruction unit sends an anti-pinch instruction to the motor drive/control module, and the motor drive/control module drives the inverter according to the anti-pinch instruction to make the motor rotate reversely. The present vehicle window lift control system has the advantages of small size, low failure rate and low cost.

    Power Tool And Motor Drive Circuit Thereof
    2.
    发明申请
    Power Tool And Motor Drive Circuit Thereof 有权
    电动工具及电机驱动电路

    公开(公告)号：US20170077851A1

    公开(公告)日：2017-03-16

    申请号：US15260815

    申请日：2016-09-09

    申请人： Johnson Electric S.A.

    发明人： Hai Bo MA ,  Yong Gang LI ,  Yong Sheng GAO ,  Jin Yun GAN ,  Yuk Tung LO ,  Wei Long LAN

    IPC分类号： H02P6/18 ,  H02K7/14 ,  B25F5/00 ,  H02P6/20

    CPC分类号： H02P6/183 ,  B25F5/00 ,  H02K7/145 ,  H02P6/181 ,  H02P6/20

    摘要： A power tool and a motor drive circuit thereof are provided. The motor drive circuit includes an inverter, a controller and a current sensor. The inverter includes a plurality of semiconductor switches and configured to convert a voltage from a power supply into an alternating current for an electric motor. The controller is configured to output detecting signals and drive signals for the inverter. The current sensor is configured to sample a current flowing through the motor, the current comprising a plurality of driving current portions corresponding to the drive signals and a plurality of position detecting current portions corresponding to the detecting signals. The controller determines the drive signals at least based on the position detecting current portions of the current so as to control power modes of the semiconductor switches in the inverter in a starting stage of the motor.

    摘要翻译： 提供了电动工具及其电动机驱动电路。 电动机驱动电路包括逆变器，控制器和电流传感器。 逆变器包括多个半导体开关，并且被配置为将来自电源的电压转换为用于电动机的交流电。 控制器配置为输出变频器的检测信号和驱动信号。 电流传感器被配置为对流过电动机的电流进行采样，电流包括对应于驱动信号的多个驱动电流部分和对应于检测信号的多个位置检测电流部分。 控制器至少基于电流的位置检测电流部分来确定驱动信号，以便在马达的起始阶段控制逆变器中的半导体开关的功率模式。