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    • 6. 发明授权
    • Controlled torque drive for a barrier operator
    • 屏障操作员的控制扭矩驱动
    • US06995533B2
    • 2006-02-07
    • US10423765
    • 2003-04-25
    • James J. FitzgibbonEdward Laird
    • James J. FitzgibbonEdward Laird
    • H02P1/00
    • H02H7/0851E05F15/41E05F15/668E05F15/77E05Y2400/31E05Y2400/53E05Y2400/54E05Y2400/554E05Y2800/40E05Y2900/106H02H7/0858
    • A controlled torque drive for a motor of a barrier operator including a current sensor coupled to a current conducting path that is in series with the motor. The current sensor is configured to sense the current level in the current conducting path and provide a signal indicative of the current level in the current conducting path to a current controller that restricts the current level to the motor when an obstruction is encountered by the movable barrier. The current controller continues to restrict current to the motor for a period of time while the motor attempts to move the movable barrier through an obstruction. In variations, the current to the motor is limited by an analog current controller, and in other variations, current is limited by a digital current controller.
    • 用于屏障操作器的电动机的受控转矩驱动器,包括耦合到与电动机串联的电流传导路径的电流传感器。 电流传感器被配置为感测电流传导路径中的电流电平,并且提供指示电流传导路径中的电流电平的信号到电流控制器,该电流控制器当可移动屏障遇到阻塞时限制电动机的电流水平 。 电流控制器继续将电流限制在电动机一段时间,同时电机试图将可动屏障移动通过障碍物。 在变化中,电动机的电流受到模拟电流控制器的限制,而在其他变化中,电流受数字电流控制器限制。