摘要:
The invention relates to a method for detecting blocking or sluggishness (M1, M3) of a DC motor (2). The method comprises the following steps: applying a voltage pulse (Uv,t=Os) to the DC motor (2); monitoring a motor current (IMotor) flowing through the DC motor (2); detecting a maximum value of the motor current (IMotor) following the application of the voltage pulse; checking whether a change in the motor current (IMotor) after reaching the maximum value exceeds a specific amount; signalling the blocking or the sluggishness (M1, M3) of the DC motor (2) if the change in the motor current (IMotor) after reaching the maximum value exceeds the specific amount.
摘要:
The invention relates to a method for detecting blocking or sluggishness (M1, M3) of a DC motor (2). The method comprises the following steps: applying a voltage pulse (Uv,t=Os) to the DC motor (2); monitoring a motor current (IMotor) flowing through the DC motor (2); detecting a maximum value of the motor current (IMotor) following the application of the voltage pulse; checking whether a change in the motor current (IMotor) after reaching the maximum value exceeds a specific amount; signalling the blocking or the sluggishness (M1, M3) of the DC motor (2) if the change in the motor current (IMotor) after reaching the maximum value exceeds the specific amount.
摘要:
The invention relates to an electric motor having a stator and a rotor. The electric motor also comprises a controller, wherein the controller is connected to the stator and/or rotor, and is designed for applying current to the stator and/or rotor for rotating the rotor. According to the invention, the controller comprises a pulse width modulator designed for controlling a power output of the electric motor, in order to generate a predetermined number of different current application patterns. The current application patterns each represent a power output of the electric motor, and preferably comprise a time sequence of current pulses, each having a current pulse duration. The controller is designed for applying current to the electric motor according to at least two different current application patterns for actuating the electric motor during a time interval of actuation, such that a power output of the electric motor in the time-based average of the time interval of actuation, in particular from the beginning to the end of the time interval, is different from the power outputs represented by the current application patterns in the time interval of actuation.
摘要:
The invention relates to an electric motor having a stator and a rotor. The electric motor also comprises a controller, wherein the controller is connected to the stator and/or rotor, and is designed for applying current to the stator and/or rotor for rotating the rotor. According to the invention, the controller comprises a pulse width modulator designed for controlling a power output of the electric motor, in order to generate a predetermined number of different current application patterns. The current application patterns each represent a power output of the electric motor, and preferably comprise a time sequence of current pulses, each having a current pulse duration. The controller is designed for applying current to the electric motor according to at least two different current application patterns for actuating the electric motor during a time interval of actuation, such that a power output of the electric motor in the time-based average of the time interval of actuation, in particular from the beginning to the end of the time interval, is different from the power outputs represented by the current application patterns in the time interval of actuation.
摘要:
A circuit arrangement and a method for adjusting the power consumption of a load of a cooling fan motor of a motor vehicle that can be operated by a direct-voltage system has at least one semiconductor switch in the supply current circuit of the load, and a control unit for triggering the semiconductor switch or switches. The load is connectable via at least one sense field-effect transistor to the direct-voltage system the measurement output of the sense FET is connected to the control unit, and the control unit furnishes a signal corresponding to the current consumption of the load at the respective operating point.
摘要:
A circuit arrangement and a method for adjusting the power consumption of a load of a cooling fan motor of a motor vehicle that can be operated by a direct-voltage system has at least one semiconductor switch in the supply current circuit of the load, and a control unit for triggering the semiconductor switch or switches. The load is connectable via at least one sense field-effect transistor to the direct-voltage system the measurement output of the sense FET is connected to the control unit, and the control unit furnishes a signal corresponding to the current consumption of the load at the respective operating point.
摘要:
Both a method and a use by this method of an apparatus for detecting blocking of a direct current motor (10), in particular a direct current motor (10) for a blower of a motor vehicle, is presented. The direct current motor (10) is deactivated by a computer unit (20) with the aid of a switching means (18) for a defined time period (Toff). Within the defined time period (Toff), at least one subsequent time (ta, tb), an induced voltage (U) of the direct current motor (10) is measured and forwarded to the computer unit (20). The direct current motor (10) remains deactivated if the induced voltage (U) undershoots a predetermined threshold value (Uth), or the direct current motor (10) is reactivated if the induced voltage (U) of the direct current motor (10) does not undershoot the predetermined threshold value (Uth).
摘要:
Both a method and a use by this method of an apparatus for detecting blocking of a direct current motor (10), in particular a direct current motor (10) for a blower of a motor vehicle, is presented. The direct current motor (10) is deactivated by a computer unit (20) with the aid of a switching means (18) for a defined time period (Toff). Within the defined time period (Toff), at least one subsequent time (ta, tb), an induced voltage (U) of the direct current motor (10) is measured and forwarded to the computer unit (20). The direct current motor (10) remains deactivated if the induced voltage (U) undershoots a predetermined threshold value (Uth), or the direct current motor (10) is reactivated if the induced voltage (U) of the direct current motor (10) does not undershoot the predetermined threshold value (Uth).
摘要:
The invention relates to a thermal fuse, especially for use in an electric module in the automotive field, comprising a connecting element (4, 25), which is electrically and mechanically connected to multiple connector points in order to provide a permanent and electrically conductive connection, and an actuator (6) which is configured separately from the connecting element (4, 25) and triggers without absorbing electrical energy when an ambient temperature reaches a trigger temperature, thereby mechanically interrupting the electrical connection formed by the connecting element (4, 25).
摘要:
The invention relates to a thermal fuse in a circuit structure, particularly a punched grid, having a plurality of circuit areas, having the circuit structure with connections sited (9) and having a fusible element (3), which is electrically and mechanically connected to the connection sites (9) of the circuit structure, the material of the fusible element (3) having a melting point, in order to melt at an ambient temperature greater than the melting point, such that material of the fusible element (3) collects at the connection sites (9) and the electrical connection formed by the fusible element (3) breaks.