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    • 1. 发明申请
    • POWER TOOL ANTI-KICKBACK SYSTEM WITH ROTATIONAL RATE SENSOR
    • 具有转速传感器的电动工具防静电系统
    • WO2006045072A2
    • 2006-04-27
    • PCT/US2005037976
    • 2005-10-20
    • BLACK & DECKER INCZHANG QIANGDESHPANDE UDAY
    • ZHANG QIANGDESHPANDE UDAY
    • E21B15/04
    • B25B21/00B23D59/001B25F5/00
    • A control system is provided for use in a power tool. The control system includes: a rotational rate sensor having a resonating mass and a controller electrically connected to the rotational rate sensor. The rotational rate sensor detects lateral displacement of the resonating mass and generates a signal indicative of the detected lateral displacement, such that the lateral displacement is directly proportional to a rotational speed at which the power tool rotates about an axis of the rotary shaft. Based on the generated signal, the controller initiates a protective operation to avoid further undesirable rotation of the power tool. The control scheme employed by the power tool may initiate different protective operations for different tool conditions.
    • 提供一种用于电动工具的控制系统。 控制系统包括:具有共振质量的旋转速率传感器和与旋转速率传感器电连接的控制器。 旋转速率传感器检测谐振质量块的横向位移,并产生指示检测到的横向位移的信号,使得横向位移与电动工具围绕旋转轴的轴线旋转的转速成正比。 基于产生的信号,控制器启动保护操作以避免电动工具的进一步不希望的旋转。 电动工具采用的控制方案可以针对不同的工具条件启动不同的保护操作。