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公开(公告)号：US5959421A
公开(公告)日：1999-09-28
申请号：US1518
申请日：1997-12-31
CPC分类号： B60L15/20 , G01P3/487 , G05B2219/37094 , G05B2219/41245 , G05B2219/45049 , Y02T10/645 , Y02T10/7275
摘要： A motor direction control device id used for electromotive vehicles which has an electric motor adapted to cause the vehicles to move forwards and backwards. The motor direction control device includes a direction control level shiftable from a neutral position into forward or reverse position. Operatively connected to the direction lever is an elongated pliable strip which is slidable along a predefined moving way by the shifting operation of the direction control lever and carries a permanent magnet. First and second magnetolectric sensors are arranged in a spaced-apart relationship with each other along the moving way of the elongated strip, each of the magnetoelectric sensors capable of generating, when left deactivated, a position signal of first logic level and activatable by the permanent magnet to produce a position signal of second logic level as the direction control lever is shifted into the forward or reverse position. Responsive to the position signals of first and second logic levels, a microprocessor is adapted to control the direction of rotation of the electric motor. A Hall generator may be utilized as the magnetoelectric sensors.
摘要翻译： 一种用于电动车辆的电动机方向控制装置id，其具有适于使车辆向前和向后移动的电动机。 电动机方向控制装置包括可从中立位置转换到向前或反向位置的方向控制电平。 可操作地连接到方向杆的是细长的柔韧条，其可以通过方向控制杆的换档操作沿预定的移动方式滑动并且携带永磁体。 第一和第二磁介电传感器沿着细长条的移动方式彼此间隔开地布置，每个磁电传感器能够在停用时产生第一逻辑电平的位置信号并由永久性可激活 当方向控制杆移动到正向或反向位置时产生第二逻辑电平的位置信号。 响应于第一和第二逻辑电平的位置信号，微处理器适于控制电动机的旋转方向。 可以使用霍尔发生器作为磁电传感器。
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公开(公告)号：US5969495A
公开(公告)日：1999-10-19
申请号：US1517
申请日：1997-12-31
CPC分类号： B60L15/20 , B60L2250/26 , Y02T10/645 , Y02T10/7275
摘要： An accelerator device is used for electromotive vehicles which has an electric motor adapted to cause the vehicles to move forwards and backwards. The accelerator device includes an accelerator pedal depressible to swing between a rest position and a most depressed position. Operatively connected to the pedal is an elongated pliable strip which is slidable along a predefined moving way and carries a permanent magnet. A plurality of magnetoelectric sensors are arranged along the moving way of the strip with a substantially equal spacing from one another, each of the sensors capable of generating, when left deactivated, a pedal position signal of first logic level and activatable by the magnetic flux of the permanent magnet to produce a pedal position signal of second logic level as the permanent magnet moves over and above the respective one of the sensors. Responsive to the pedal position signals, a microprocessor is adapted to control the torque and speed of the electric motor by way of regulating the amount of electric current to be supplied to the electric motor. The magnetoelectric sensors include a Hall generator that normally gives an output voltage signal of logic level one but produces an output voltage signal of logic level zero when aligned with the permanent magnet.
摘要翻译： 用于电动车辆的加速器装置，其具有适于使车辆向前和向后移动的电动机。 加速器装置包括能够在静止位置和最下压位置之间摆动的加速踏板。 可操作地连接到踏板是细长的柔韧条，其可沿着预定的移动方式滑动并且携带永磁体。 多个磁电传感器沿着条的移动方式以彼此大致相等的间隔布置，每个传感器能够在停用时产生第一逻辑电平的踏板位置信号，并且可由第 所述永磁体在所述永磁体移动超过所述传感器的相应一个时产生第二逻辑电平的踏板位置信号。 微处理器响应于踏板位置信号，适于通过调节供给电动机的电流量来控制电动机的转矩和转速。 磁电传感器包括霍尔发生器，其通常给出逻辑电平1的输出电压信号，但是当与永磁体对准时产生逻辑电平为零的输出电压信号。
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公开(公告)号：US6041163A
公开(公告)日：2000-03-21
申请号：US064854
申请日：1998-04-23
CPC分类号： B66F9/24 , Y10S388/93
摘要： A pump motor control apparatus is adapted to control a pump motor of a forklift truck by using a driving transistor connected between a battery and the pump motor. The pump motor control apparatus includes a current detection circuit for detecting a current flowing through the pump motor to generate a current detection signal representing the current. A controller is employed to determine the load condition based on the current detection signal to thereby generate a control signal for use in the control of the driving transistor. The control signal is a pulse width modulation signal whose on-duty ratio is controlled depending on the load condition so as to decrease the torque and speed of the pump motor during the unloaded condition but to increase the torque and speed of the pump motor during the loaded condition.
摘要翻译： 泵电动机控制装置适于通过使用连接在电池和泵电动机之间的驱动晶体管来控制叉车的泵电动机。 泵电动机控制装置包括电流检测电路，用于检测流经泵电动机的电流，以产生表示电流的电流检测信号。 采用控制器基于电流检测信号来确定负载状况，从而产生用于控制驱动晶体管的控制信号。 控制信号是脉宽调制信号，其占空比根据负载条件而被控制，以便在卸载状态期间降低泵电动机的转矩和转速，但是在该期间增加泵电动机的转矩和转速 加载条件。
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