Abstract: The invention relates to a controller (1) for controlling a component (10) of a motor vehicle, in particular an electric motor, a valve, a pump, a fan drive, in particular for HVAC applications or for drive system temperature control, having a processor (30), preferably a microcontroller (40), and an interface (20) that is designed such that a software update is able to be received, in particular applied, by way of the interface (20). It is proposed for the controller (1) to have a blocking mechanism that, when it is activated, prevents the software update from being applied, wherein the blocking mechanism is able to be activated in a time-controlled, event-controlled and/or signal-controlled manner.

Abstract: A fan system includes: two circuit breakers, a control module for controlling two circuit breakers, two electric motors to which their operating voltage UB is supplied via the circuit breakers, and at least one temperature sensor on a board on which the circuit breakers are located. The control module evaluates a signal TNTC from the temperature sensor, and sets the pulse duty factors TV1, TV2 of pulsed control voltages at the circuit breakers, while taking into account this signal as well as a requested fan power, in such a way that no power loss PV exceeding a specified value occurs at any circuit breaker.

Abstract: The present invention relates to a fan system and a method for its operation, including a control module (1) for controlling two circuit breakers, two circuit breakers (3, 4), two electric motors (5, 6) to which their operating voltage UB is supplied via the circuit breakers (3, 4), and at least one temperature sensor (8) on a board (2) on which the circuit breakers (3, 4) are located, the control module (1) having means for evaluating a signal TNTC from the temperature sensor (8), and for setting the pulse duty factors TV1, TV2 of pulsed control voltages at the circuit breakers (3, 4), while taking into account this signal as well as a requested fan power, in such a way that no power loss PV exceeding a specified value occurs at any circuit breaker (3, 4, 7).

Abstract: Disclosed is a method for controlling an electric motor (10) fed by a constant voltage supply system (14, 20), especially a method for controlling a fan motor which is fed by a motor vehicle power supply system using pulse width modulation and which can be connected to the constant voltage supply system via an actuator (18) in the electric circuit of the motor. According to said method, the supply voltage (UM) of the motor (10) is timed according to a predefined characteristic curve substantially independently of sudden changes in the supply voltage (UB) of the constant voltage supply system.

Abstract: The invention relates to a method for monitoring and controlling reversing actions in electrically actuatable units, wherein an actuating drive unit can exert an actuating force in order to move an electrically actuatable unit, and a safety circuit automatically switches off the actuating drive unit after a jamming switch-off time that is predetermined for a movement if no movement occurs despite the triggering of the actuating drive unit. According to the invention, a triggered reversing action results in a temporary extension of the predetermined jamming switch-off time from a short jamming switch-off time t1 that is predetermined for normal operation to a longer jamming switch-off time t2 (2).

Abstract: The invention relates to a method for monitoring and controlling reversing actions in electrically actuatable units, wherein an actuating drive unit can exert an actuating force in order to move an electrically actuatable unit, and a safety circuit automatically switches off the actuating drive unit after a jamming switch-off time that is predetermined for a movement if no movement occurs despite the triggering of the actuating drive unit. According to the invention, a triggered reversing action results in a temporary extension of the predetermined jamming switch-off time from a short jamming switch-off time t1 that is predetermined for normal operation to a longer jamming switch-off time t2 (2).

Abstract: The invention is based on a method for determining the remaining running time of an electric drive mechanism until a mechanical limit stop has been reached, wherein surfaces to be closed are moved into mechanically limited end positions by means of the drive mechanism. After the position of the surface to be closed is detected relative to a mechanical limit stop, the time difference between two incremental pulse generators 25 near the limit stop is determined, and the remaining running time 26 of the electric drive mechanism until the mechanical limit stop is reached is calculated.

Abstract: The invention is based on a method for the contactless approaching of an upper stop position (A) outfitted with a seal (5) by a window pane (1) of a motor vehicle actuated by external force. When an upper window-pane edge (2) approaches the stop position (A), a control signal is generated by a control unit (26), by way of which the electric drive is switched off in a shutoff position (11) pa, and/or its driving direction is reversed, so that the upper window-pane edge (2) comes to a standstill at a zero position (10) p0. When the window pane (1) approaches the stop position (A), system parameters (S1 . . . Sn) are detected by sensors (27) and stored in a memory (28). A system state SZ (S1-Sn) dependent on the system parameters (S1 . . . Sn) is read out with the shutoff position (11) pa from a characteristic diagram. A difference &Dgr;SZ is determined by comparing the respective current system states (SZcur (S1-Sn) and the reference system state SZref (S1 . . . Sn) stored in the memory (28).

Abstract: The invention is based on a method for determining the remaining running time of an electric drive mechanism until a mechanical limit stop has been reached, wherein surfaces to be closed are moved into mechanically limited end positions by means of the drive mechanism. After the position of the surface to be closed is detected relative to a mechanical limit stop, the time difference between two incremental pulse generators 25 near the limit stop is determined, and the remaining running time 26 of the electric drive mechanism until the mechanical limit stop is reached is calculated.

Abstract: The method for detecting after-running of electrical servomotors with incremental position detection, particularly for servomotors in motor vehicles, includes detecting position signals of position indicators and storing the detected states of the position signals or the states of the position indicators after switching off the motor in a nonvolatile memory. The evaluation electronics can be intermittently disconnected from the supply voltage. They are provided with a buffer that is large enough for position detection and storage after disconnection of the evaluation electronics from the supply voltage. The nonvolatile memory can be an EEPROM in the microcontroller of the evaluation electronics.

Abstract: An arrangement and method for the electronic monitoring of an adjustment drive wherein two criteria must be met before a jamming safety responds. The one criterium takes into account the curve for the rotational speed of the actual and a preceding operation of the adjustment drive while a first and/or second derivative of measured value for the adjustment drive are incorporated into the second criterium.