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公开(公告)号：US4365189A
公开(公告)日：1982-12-21
申请号：US068161
申请日：1979-08-20
CPC分类号： H02P7/03
摘要： A reversible electrically driven motor is disclosed together with circuitry for controlling the direction of the motor such that the current to the drive motor cannot be reversed to an opposite direction while the motor continues operation in a first direction. Once the motor slows to predetermined speed, which may approximate near-stop condition, the circuitry permits the voltage to operate in the opposite direction thereby reversing the motor. The control apparatus may include the portion of the electric motor which operates as a generator when the motor is not being electrically driven, a solid state sensor for sensing the voltage generated, and a lock-out circuit which responds to the sensed voltage to disable the operation of the driving circuit which reverses the motor.
摘要翻译： 公开了一种可逆电驱动电动机，用于控制电动机的方向的电路，使得当电动机在第一方向上继续运行时，驱动电动机的电流不能反向到相反的方向。 一旦电机减速到预定的速度，这可能近似接近停止状态，电路允许电压在相反的方向上操作，从而使电机反转。 控制装置可以包括当电动机不被电动驱动时用作发电机的电动机的一部分，用于感测产生的电压的固态传感器，以及响应感测电压的锁定电路以禁用 使电机反转的驱动电路的操作。
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公开(公告)号：US4378855A
公开(公告)日：1983-04-05
申请号：US68160
申请日：1979-08-20
CPC分类号： B60L3/02 , B60L11/1805 , Y02T10/646 , Y02T10/648 , Y02T10/7005
摘要： An improvement for electrically driven floor maintenance apparatus including means for varying the speed of the driving motors is disclosed. Two speed ranges are provided by switching means which change the interconnection of the drive motors from series for the low speed range, and parallel for the high speed range. Within each speed range, intermediate speeds are provided by placing resistors with shunt in series with the motors. Time delay circuitry is also included to prevent immediate operation of the vehicle in the high speed of each range until the vehicle has had some time to accelerate. Additionally, means are provided for detecting whether a vehicle is rolling in a forward or reverse direction and circuits are provided to prevent the operator from driving the vehicle in an opposite direction until the vehicle has slowed down to a near stop. A deadman control is provided to prevent the energizing of the drive motors when the operator is no longer seated on the driver's seat. ///
摘要翻译： 公开了一种用于电动地板维护设备的改进，包括用于改变驱动电机的速度的装置。 通过切换装置提供两个速度范围，这些切换装置在低速范围内串联改变驱动马达的互连，并且在高速范围内并联。 在每个速度范围内，通过放置与电动机串联的电阻器来提供中间速度。 还包括时间延迟电路，以防止车辆在每个范围的高速度下立即运行，直到车辆有一段时间加速。 此外，提供了用于检测车辆是正向还是反向滚动的装置，并且设置了电路以防止操作者以相反方向驾驶车辆，直到车辆减速到接近停止。 当操作者不再坐在驾驶员座椅上时，提供了一个防盗控制器来防止驱动马达的激励。
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