Electronic switching module for a power tool
    1.
    发明授权
    Electronic switching module for a power tool 有权
    电动工具电子开关模块

    公开(公告)号:US08446120B2

    公开(公告)日:2013-05-21

    申请号:US13476634

    申请日:2012-05-21

    IPC分类号: H02P1/30

    摘要: A power tool includes a tool housing, an electric motor inside the housing, and a power interface facilitating a connection to a power source. At least four actively-controlled power components are configured as an H-bridge to modulate a supply of power from the power interface to the electric motor. A user-actuated input unit outputs a first signal indicative of a desired power output level to the electric motor and a second signal indicative of a desired direction of current flow to the electric motor. A control unit controls the supply of power to the electric motor using two of said power components with synchronous rectification for pulse-width modulation (PWM) of the supply of power based on the first signal, and to control the direction of current flow to the electric motor using the other two of said power components based on the second signal.

    摘要翻译: 电动工具包括工具壳体,壳体内的电动机以及便于连接到电源的电源接口。 至少四个主动控制的功率部件被配置为H桥以调制从电力接口到电动机的电力供应。 用户驱动的输入单元向电动机输出表示期望的功率输出电平的第一信号和指示电流流向电动机的期望的方向的第二信号。 控制单元使用两个所述功率元件来控制对电动机的电力供应,所述两个功率元件具有基于第一信号的功率供给的脉冲宽度调制(PWM)的同步整流,并且控制电流流向 基于第二信号使用所述两个所述功率部件的电动马达。

    ELECTRONIC SWTICHING MODULE FOR A POWER TOOL
    2.
    发明申请
    ELECTRONIC SWTICHING MODULE FOR A POWER TOOL 有权
    电动工具电子切换模块

    公开(公告)号:US20120293103A1

    公开(公告)日:2012-11-22

    申请号:US13476634

    申请日:2012-05-21

    IPC分类号: H02P7/29 B25F5/00

    摘要: A power tool includes a tool housing, an electric motor inside the housing, and a power interface facilitating a connection to a power source. At least four actively-controlled power components are configured as an H-bridge to modulate a supply of power from the power interface to the electric motor. A user-actuated input unit outputs a first signal indicative of a desired power output level to the electric motor and a second signal indicative of a desired direction of current flow to the electric motor. A control unit controls the supply of power to the electric motor using two of said power components with synchronous rectification for pulse-width modulation (PWM) of the supply of power based on the first signal, and to control the direction of current flow to the electric motor using the other two of said power components based on the second signal.

    摘要翻译: 电动工具包括工具壳体,壳体内的电动机以及便于连接到电源的电源接口。 至少四个主动控制的功率部件被配置为H桥以调制从电力接口到电动机的电力供应。 用户驱动的输入单元向电动机输出表示期望的功率输出电平的第一信号和指示电流流向电动机的期望的方向的第二信号。 控制单元使用两个所述功率元件来控制对电动机的电力供应,所述两个功率元件具有基于第一信号的功率供给的脉冲宽度调制(PWM)的同步整流,并且控制电流流向 基于第二信号使用所述两个所述功率部件的电动马达。

    PROTECTIVE REDUNDANT SUBSYSTEM FOR POWER TOOLS
    4.
    发明申请
    PROTECTIVE REDUNDANT SUBSYSTEM FOR POWER TOOLS 有权
    电动工具保护性冗余子系统

    公开(公告)号:US20110058288A1

    公开(公告)日:2011-03-10

    申请号:US12875504

    申请日:2010-09-03

    IPC分类号: H02H7/09

    摘要: A protective redundancy circuit is provided for a power tool having an electric motor. The protective redundant subsystem is comprised of: a motor switch coupled in series with the motor; a motor control module that controls the switching operation of the motor switch; and a protective control module that monitors switching operation of the motor switch and disables the power tool when the switching operation of the motor switch fails. In the context of an AC powered tool, the switching operation of the motor switch is correlated to and synchronized to the waveform of the AC input signal. During each cycle or half cycle, the motor control module introduces a delay period before closing the motor switch and the protective control module determines the operational status of the motor switch by measuring the voltage across the motor switch during the delay period.

    摘要翻译: 为具有电动机的电动工具提供保护冗余电路。 保护冗余子系统包括:与电动机串联耦合的电动机开关; 控制电动机开关的开关动作的电动机控制模块; 以及保护控制模块,用于监视电动机开关的切换操作,并且在电动机开关的切换操作失败时禁用电动工具。 在交流电动工具的上下文中,电动机开关的开关操作与AC输入信号的波形相关并与其同步。 在每个周期或半周期期间,电机控制模块在关闭电动机开关之前引入延迟时间,并且保护控制模块通过在延迟期间测量电动机开关两端的电压来确定电动机开关的操作状态。

    Generic motor control system
    5.
    发明授权
    Generic motor control system 有权
    通用电机控制系统

    公开(公告)号:US07834566B2

    公开(公告)日:2010-11-16

    申请号:US12629099

    申请日:2009-12-02

    IPC分类号: H02P1/00 H02P3/00 H02P5/00

    摘要: A method for controlling the operation of a motor utilizing a generic motor control module. The method includes sampling at least one motor operating criterion during operation of the motor and executing a generic control algorithm at a predetermined periodic interval. Execution of the algorithm provides a firing angle, duty cycle, or other suitable control function solution for an electronic valve for each periodic interval, thereby controlling the behavior of the motor. Additionally, the method includes firing the electronic valve at the calculated timing during each periodic interval such that the motor functions in accordance with desired motor operational parameters.

    摘要翻译: 一种利用一般电动机控制模块来控制电动机操作的方法。 该方法包括在电机操作期间对至少一个电动机操作标准进行采样,并以预定的周期性间隔执行通用控制算法。 算法的执行为每个周期性间隔提供电子阀的触发角,占空比或其他合适的控制功能解,从而控制电机的行为。 此外,该方法包括在每个周期性间隔期间以所计算的定时点火电子阀,使得电动机根据期望的电动机操作参数起作用。