Abstract: A method for setting a gain of a magnetic field sensor includes providing the magnetic field sensor and an evaluation unit on a same printed circuit board, generating a magnetic field signal with the magnetic field sensor, transmitting the magnetic field signal to the evaluation unit, evaluating the magnetic field signal with the evaluation unit, and transmitting a signal for setting the gain from the evaluation unit to the magnetic field sensor. In an example embodiment, the magnetic field sensor is a rotor position sensor of an electric motor.

Abstract: An electric motor having a stator and a rotor rotatably mounted about a rotational axis relative to the stator is disclosed. The rotor additionally has a main part, multiple magnet elements which are distributed along the circumferential direction and are received on a radial face of the main part in a mutually spaced manner, and a burst-protection sleeve which covers the main part and the magnet elements. The burst-protection sleeve has multiple cover segments, each of which directly contacts a magnet element, and multiple bridging regions which connect two adjacent cover segments together, wherein the burst-protection sleeve is used to directly support the magnet elements relative to the main part, and the bridging regions have a lower degree of flexural strength in the circumferential direction than the cover segments.

Abstract: A method for maintaining a detected absolute position of an electric motor operating as an actuator during a critical operation involves the electric motor (2) being controlled by a controller (1) which is supplied with energy from an energy source. In the method, with which an absolute value sensor can be omitted, the absolute position of the electric motor (2) is measured during the operation thereof, wherein rotations of the electric motor (2) are detected. The rotations are counted, and a count value is output to a microprocessor (3) of the controller (1) in order to actuate the electric motor (2), and in the event of a critical operation, the currently detected count value is maintained by means of an independent voltage supply (7).

Abstract: A device having two mutually spaced sensor loops is provided. The device includes a magnetostrictive sensor structure coupled to a plurality of transmitters and a plurality of receivers, and along which a magnet that is secured to the rotating component moves. Each sensor loop has a shape corresponding to a rotating direction of the rotating component. Two saturation zones are in both sensor loops. Each transmitting element is provided for simultaneously coupling two current pulses in opposite direction into one respective sensor loop. Each receiving element is positioned to receive a reflected pulse by the magnet at the respective saturation zone.

Abstract: Various embodiments of the teachings herein include a method for operating a battery device having a number of battery cells arranged in a battery housing. The method may include: detecting a fluid concentration of a predetermined fluid in an interior of the battery housing; comparing the detected fluid concentration to a specified concentration threshold; adapting a maximum admissible operating temperature of the battery device if the detected fluid concentration exceeds the concentration threshold; and operating the battery device such that the maximum admissible operating temperature is not exceeded.

Abstract: An arrangement for pressure monitoring within a battery housing of a battery system. The arrangement includes a first power supply path and a pressure measuring. The pressure measuring unit is electrically connected to the first power supply path. The arrangement also includes a pressure-sensitive mechanical switching unit arranged within the battery housing and electrically connected, in series with the pressure measuring unit, to the first power supply path. The switching unit switches to an electrically conductive switching state when the pressure within the battery housing exceeds a predefined pressure threshold and establishes a supply of power to the pressure measuring unit via the first power supply path, and switches to an electrically blocking switching state when the pressure within the battery housing falls below the pressure threshold and interrupts the supply of power to the pressure measuring unit via the first power supply path.

Abstract: A method is for calibrating a multiturn sensor for determining the position of a spindle of a clutch actuator, in which the multiturn sensor (5) is operatively connected to a magnetic field of a permanent magnet (12) in that the multiturn sensor (5) is combined with an actuator transmission (3) which comprises a spindle (9) bearing the permanent magnet (12).

Abstract: Various embodiments include a catalyst measuring system for determining the aging of an SCR catalytic converter, the system comprising: a control device with a processor; an SCR catalytic converter for treating the exhaust gases of a vehicle; a high-frequency sensor for measuring a level of ammonia loading of the SCR catalytic converter; and an ammonia dosing system for injecting ammonia into an exhaust system of the vehicle. The control device instructs the ammonia dosing system to inject ammonia selectively into the exhaust system. The control device compares data measured by the high-frequency sensor with a predefined threshold value to determine the aging of the SCR catalytic converter.

Abstract: A method for operating an actuator arrangement for a clutch operating system includes providing an actuator arrangement with a transmission, a piston, and an inductive sensor device. The transmission has an electric motor and a metal lead screw that converts a rotary motion into a linear motion. The piston is connected to the metal lead screw. The method also includes energizing the electric motor to linearly displace the metal lead screw in an axial direction, axially displacing the piston with the metal lead screw, using the metal lead screw as a target for the inductive sensor device, and using the inductive sensor device to determine an axial distance traveled by the piston.

Abstract: The invention relates to a method for determining the absolute position of a component of an actuator rotating about a rotational axis, in particular a clutch actuator, wherein the component has a co-rotating magnetic element (18), and the absolute position of the magnetic element (18) is detected by way of a multi-turn sensor (16) located opposite the magnetic element (18), which is supplied with a voltage. In a method, in which the absolute position can be detected without great constructional effort, a position of the magnetic element (18) is monitored by a Wiegand wire unit (19), which detects a movement of the component when the actuator (3, 12, 13) is turned off, and if a movement is detected, transmits a voltage pulse to the multi-turn sensor (16) for measuring the current position of the component.

Abstract: A method for setting a gain of a magnetic field sensor includes providing the magnetic field sensor and an evaluation unit on a same printed circuit board, generating a magnetic field signal with the magnetic field sensor, transmitting the magnetic field signal to the evaluation unit, evaluating the magnetic field signal with the evaluation unit, and transmitting a signal for setting the gain from the evaluation unit to the magnetic field sensor. In an example embodiment, the magnetic field sensor is a rotor position sensor of an electric motor.

Abstract: An angle-measuring device is provided for a rotationally-driven linear actuator, which can be implemented into a clutch actuator. A rotor element has an axis of rotation and rotates concentrically with a rotor of a rotary drive for an axially movable linear actuator element. A measurement magnet arrangement is fixed relative to the rotor element and has a polarization. The polarization is oriented in such a way that the magnetic field lines can change with a rotation of the rotor element so as to enable the angle to be precisely determined from at least one measurement position. At one location, a 360-degree sensor is provided for measuring angular positions based on the measurement magnet arrangement. At another location, a revolution-counting sensor is provided for counting a number of revolutions carried out based on the measurement magnet arrangement.

Abstract: A method is for calibrating a multiturn sensor for determining the position of a spindle of a clutch actuator, in which the multiturn sensor (5) is operatively connected to a magnetic field of a permanent magnet (12) in that the multiturn sensor (5) is combined with an actuator transmission (3) which comprises a spindle (9) bearing the permanent magnet (12).

Abstract: The invention relates to a method for determining the absolute position of a component of an actuator rotating about a rotational axis, in particular a clutch actuator, wherein the component has a co-rotating magnetic element (18), and the absolute position of the magnetic element (18) is detected by way of a multi-turn sensor (16) located opposite the magnetic element (18), which is supplied with a voltage. In a method, in which the absolute position can be detected without great constructional effort, a position of the magnetic element (18) is monitored by a Wiegand wire unit (19), which detects a movement of the component when the actuator (3, 12, 13) is turned off, and if a movement is detected, transmits a voltage pulse to the multi-turn sensor (16) for measuring the current position of the component.

Abstract: A device for determining the angle of a rotating component is provided. The device includes a magnetostrictive sensor structure which is coupled to a transmitter and at least one receiver, and along which a magnet is secured to the moving component moves. The transmitter and the receiver(s) are connected to an electronic analysis unit for determining the position of the moving component based on a transit time between the transmitter and a saturation zone and back from the saturation zone to the receiver(s). The transmitted signal is reflected on the saturation zone produced in the magnetostrictive sensor structure by the magnet.

Abstract: A method for operating an actuator arrangement for a clutch operating system includes providing an actuator arrangement with a transmission, a piston, and an inductive sensor device. The transmission has an electric motor and a metal lead screw that converts a rotary motion into a linear motion. The piston is connected to the metal lead screw. The method also includes energizing the electric motor to linearly displace the metal lead screw in an axial direction, axially displacing the piston with the metal lead screw, using the metal lead screw as a target for the inductive sensor device, and using the inductive sensor device to determine an axial distance traveled by the piston.

Abstract: Various embodiments include a catalyst measuring system for on-board diagnostics and for determining the aging of an SCR catalytic converter for a vehicle comprising: a processor; an SCR catalytic converter for purifying exhaust gas of the vehicle; a high-frequency sensor for determining the ammonia loading of the SCR catalytic converter; a NOx sensor for sensing the NOx concentration downstream of the SCR catalytic converter; and an ammonia dosing system for injecting ammonia into an exhaust system of the vehicle. The control device instructs the ammonia dosing system to inject ammonia selectively into the exhaust system at a plurality of different dosing rates. The control device evaluates data received from the NOx sensor and of the high-frequency sensor to calculate the ammonia dosing rate.

Abstract: A method for maintaining a detected absolute position of an electric motor operating as an actuator during a critical operation involves the electric motor (2) being controlled by a controller (1) which is supplied with energy from an energy source. In the method, with which an absolute value sensor can be omitted, the absolute position of the electric motor (2) is measured during the operation thereof, wherein rotations of the electric motor (2) are detected. The rotations are counted, and a count value is output to a microprocessor (3) of the controller (1) in order to actuate the electric motor (2), and in the event of a critical operation, the currently detected count value is maintained by means of an independent voltage supply (7).

Abstract: A method for operating a rotation sensor comprising at least four magnetoresistive sensor elements is described. Each sensor element comprises a packet of a ferromagnetic reference layer and a sensitive ferromagnetic layer and a non-magnetic layer separating the reference layer from the sensitive layer. The layers are designed such that the orientation of the magnetization in the respective layer is possible in the longitudinal direction of the layer. The at least one sensor element is formed in a plane in a spiral form with at least one complete winding and the windings are implemented concentrically. The sensor element is bent into a winding in different segments. Adjacent segments enclose an angle between them and each complete winding comprises a predetermined number of segments.

Abstract: The invention relates to a method for determining and/or controlling a position of an electric motor, in particular in a clutch actuation system of a motor vehicle, wherein the position of a rotor of the electric motor is picked up by a sensor system situated on a stator of the electric motor outside an axis of rotation of the electric motor, and the position signal picked up by the sensor system is analyzed by an analysis unit. In a method in which the rotor position is detected with a high level of certainty, the position signal is transmitted to the analysis unit depending on a transmission distance between the sensor system and the analysis unit by means of an SPI protocol signal for short transmission distances, and/or by means of a PWM signal for longer transmission distances.