Control circuit for a DC motor
    1.
    发明公开
    Control circuit for a DC motor 失效
    Steuerschaltungfüreinen Gleichstrommotor。

    公开(公告)号:EP0604394A1

    公开(公告)日:1994-06-29

    申请号:EP94101329.4

    申请日:1992-01-10

    IPC分类号: H02P5/172

    摘要: An AC power supply (50) supplies a full wave rectifier (51) with a positive output line (P) and a negative output line (G). A DC motor (2) is connected in series with a drive transistor (3) between the positive and negative lines (P,G). Actuating current can be supplied from the positive line (P) by closure of a switch (59) coupling the line (P) through a base resistor (61). A detecting transistor (54) connected in series with a collector circuit resistor (60) between the lines (P,G) sense the voltage at the node (N) between the motor (2) and the drive transistor (3) through a base circuit resistor (62) and latches the drive transistor (3) on unless the voltage at the node (N) disables the detecting transistor (54).

    摘要翻译: AC电源(50)向全波整流器(51)提供正输出线(P)和负输出线(G)。 直流电动机(2)与正,负线(P,G)之间的驱动晶体管(3)串联连接。 可以通过闭合通过基极电阻(61)连接线(P)的开关(59),从正极线(P)提供驱动电流。 与线路(P,G)之间的集电电路电阻(60)串联连接的检测晶体管(54)通过基极(2)感测电动机(2)和驱动晶体管(3)之间的节点(N)处的电压 电路电阻器(62)并且锁存驱动晶体管(3),除非节点(N)处的电压禁用检测晶体管(54)。

    Control circuit for a DC motor
    4.
    发明公开
    Control circuit for a DC motor 失效
    直流电机的控制电路

    公开(公告)号:EP0495601A3

    公开(公告)日:1992-12-09

    申请号:EP92300257.0

    申请日:1992-01-10

    摘要: A DC power supply (V C c) for a DC motor (2) is controlled by a drive transistor (3). An "ON" state of the drive transistor (3) is maintained by a comparator (8) or means which compares a terminal voltage (V T ) at a point (4) between the DC motor (2) and the drive transistor (3) with a reference voltage (V R ) supplied from the power supply. A clock pulse is applied to the drive transistor (3) to make it periodically turn off in order to detect an induced voltage depending upon rotation rate of the DC motor (2). The drive transistor (3) remains turned off upon stopping the rotating DC motor (2) by force. A regulator (20) is provided between the power supply and the reference voltage. A restraint torque and a rotation rate control means are also provided. In an alternative embodiment descbribed, a pulsating power supply is provided instead of the DC power supply and the clock. One particular application for the control circuit disclosed is as the drive means for an automobile powered window.

    Control circuit for a DC motor
    6.
    发明公开
    Control circuit for a DC motor 失效
    Steuerschaltungfüreinen Gleichstrommotor。

    公开(公告)号:EP0495601A2

    公开(公告)日:1992-07-22

    申请号:EP92300257.0

    申请日:1992-01-10

    摘要: A DC power supply (V C c) for a DC motor (2) is controlled by a drive transistor (3). An "ON" state of the drive transistor (3) is maintained by a comparator (8) or means which compares a terminal voltage (V T ) at a point (4) between the DC motor (2) and the drive transistor (3) with a reference voltage (V R ) supplied from the power supply. A clock pulse is applied to the drive transistor (3) to make it periodically turn off in order to detect an induced voltage depending upon rotation rate of the DC motor (2). The drive transistor (3) remains turned off upon stopping the rotating DC motor (2) by force. A regulator (20) is provided between the power supply and the reference voltage. A restraint torque and a rotation rate control means are also provided. In an alternative embodiment descbribed, a pulsating power supply is provided instead of the DC power supply and the clock. One particular application for the control circuit disclosed is as the drive means for an automobile powered window.

    摘要翻译: 用于DC电动机(2)的DC电源(VCc)由驱动晶体管(3)控制。 驱动晶体管(3)的“导通”状态由比较器(8)或比较直流电动机(2)和驱动晶体管(3)之间的点(4)处的端子电压(VT)的装置来维持, 具有从电源供应的参考电压(VR)。 时钟脉冲施加到驱动晶体管(3)以使其周期性地关闭,以便根据DC电动机(2)的转速来检测感应电压。 驱动晶体管(3)通过强制停止旋转的直流电动机(2)时保持关闭。 在电源和参考电压之间提供调节器(20)。 还提供了约束扭矩和转速控制装置。 在描述的替代实施例中,提供脉动电源代替DC电源和时钟。 所公开的控制电路的一个具体应用是汽车动力窗的驱动装置。

    Pressure detector circuit
    7.
    发明公开
    Pressure detector circuit 失效
    Druckaufnehmerschaltung。

    公开(公告)号:EP0585024A3

    公开(公告)日:1994-10-19

    申请号:EP93306440.4

    申请日:1993-08-16

    摘要: A pressure to resistance transducer or sensor (10) is connected to an amplifier (12). A three-state comparator (14) compares the amplifier output signal with a first reference voltage (15) and its comparison output is looped to another input of the amplifier (12) through a low-pass filter (16). A first controllable current source (41) in series to a first reference resistor (42) is provided in the loop path to detect a break condition of the pressure sensor (10). A second controllable current source (51) in series to a second reference resistor (52) and a voltage divider (54) are also provided in the loop path to detect a short circuit condition of the pressure sensor (10) in combination with the first current source (41). The low-pass filter (16) includes a switch (59) in parallel with a high resistor (58) having its resistance higher than that of a low resistor (17).

    摘要翻译: 对电阻换能器或传感器(10)的压力连接到放大器(12)。 三态比较器(14)将放大器输出信号与第一参考电压(15)进行比较,并且其比较输出通过低通滤波器(16)与放大器(12)的另一输入端相连。 在环路中提供与第一参考电阻器(42)串联的第一可控电流源(41),以检测压力传感器(10)的断路状态。 在环路中还设置有与第二参考电阻(52)和分压器(54)串联的第二可控电流源(51),以检测压力传感器(10)的短路状况与第一 电流源(41)。 低通滤波器(16)包括与电阻高于低电阻(17)的电阻的高电阻(58)并联的开关(59)。

    Pressure detector circuit
    8.
    发明公开
    Pressure detector circuit 失效
    压力检测器电路

    公开(公告)号:EP0585024A2

    公开(公告)日:1994-03-02

    申请号:EP93306440.4

    申请日:1993-08-16

    摘要: A pressure to resistance transducer or sensor (10) is connected to an amplifier (12). A three-state comparator (14) compares the amplifier output signal with a first reference voltage (15) and its comparison output is looped to another input of the amplifier (12) through a low-pass filter (16). A first controllable current source (41) in series to a first reference resistor (42) is provided in the loop path to detect a break condition of the pressure sensor (10).
    A second controllable current source (51) in series to a second reference resistor (52) and a voltage divider (54) are also provided in the loop path to detect a short circuit condition of the pressure sensor (10) in combination with the first current source (41). The low-pass filter (16) includes a switch (59) in parallel with a high resistor (58) having its resistance higher than that of a low resistor (17).

    摘要翻译: 电阻传感器或传感器(10)的压力连接到放大器(12)。 三态比较器(14)将放大器输出信号与第一参考电压(15)进行比较,并且其比较输出通过低通滤波器(16)循环到放大器(12)的另一个输入。 在环路中设置与第一参考电阻器(42)串联的第一可控电流源(41),以检测压力传感器(10)的中断状态。 在环路中还设置与第二参考电阻器(52)和分压器(54)串联的第二可控电流源(51),以检测压力传感器(10)的短路状况并结合第一 电流源(41)。 低通滤波器(16)包括与其电阻高于低电阻(17)的高电阻(58)并联的开关(59)。