Abstract: A method comprises controlling a hydraulic motor vehicle brake system having an electric pressure providing device which is driven by an electric synchronous machine. In order to operate the synchronous machine without a rotational position sensor, the actuation of the synchronous machine is realized by extended I-f control, wherein a requested rotational speed variable for the synchronous machine is received the requested rotational speed variable is limited, based on the limited rotational speed variable and a system pressure, a d current and a q current are determined, based on the limited rotational speed variable, a virtual rotational angle is determined, and the actuation of the synchronous machine is realized based on the virtual rotational angle, d current and q current.

Abstract: A method for monitoring the control of an electronically commutated electric machine a rotor and a stator, has the following steps: actuating the electric machine by means of a control device, wherein the rotor rotates in a first direction of rotation, sensing the back electromotive force of the coils of the stator, by a BEMF observer, outputting a fault message and/or transferring the electric machine to a safety operating state if at least one of two test conditions is met. An electronically commutated electric machine which is designed for carrying out the method, and to a brake device for a motor vehicle, comprising an electric machine of such type are also disclosed.

Abstract: A method for control of an electric machine comprises controlling the electric machine by a control device in a normal operating mode. The control device uses signals of a rotor position sensor for controlling the electric machine, monitoring the signals of the rotor position sensor. The electric machine is controlled in a transition operating mode when the signals of the rotor position sensor are faulty and the current rotational speed of the rotor is above a predefined safety rotational speed. The electric machine controlled in a safety operating mode after the transition operating mode. The transition operating mode comprises controlling the electric machine by the control device by detecting the back electromotive force of the coils of the stator until the angular velocity of the rotor is under a predefined safety rotational speed or until a validity condition of the BEMF observer is no longer met.

Abstract: A method for controlling an electronically commutated electric machine for identifying an end position of a linear actuator comprises such an electronically commutated electric machine. The embodiments further relate to an electronically commutated electric machine which is designed for carrying out the method according, and to a brake device for a motor vehicle, comprising such an electric machine.

Abstract: A method for actuating a permanent magnet synchronous motor is disclosed. The method provides simplifications in the calculations required for the control in order to reduce the computing time while at the same time achieving the lowest possible deviation from the optimum d-q current point or current vector. A permanent magnet synchronous motor suitable for carrying out the method is also disclosed.

Abstract: A method for operating a brake system assembly includes evaluating input data and downgrading from a first mode to a second mode according to the result of the evaluation. The input data is a performance curve of the first mode and determining the performance curve includes using a torque-speed curve, a first mode-dependent characteristic curve with at least one mathematical formula. Evaluating the input data includes comparing an ascertained performance capability of the first mode according to the calculated performance characteristic with the performance capability of the second mode.

Abstract: The invention relates to a method for actuating a blocking slide which is actuatable by means of an electromagnet and which, in at least one position, engages into a structured surface, whereby the blocking slide prevents a rotation of the structured surface in at least one direction of rotation, wherein, before a deployment of the blocking slide, the structured surface is moved into a specified orientation. The invention furthermore relates to an actuating unit for carrying out such a method, and to a vehicle brake having such an actuating unit.

Abstract: A method for operating a permanent magnet synchronous motor comprises setting a maximum power, determining a current vector and an output voltage vector in the dq coordinate system. A setpoint amount for a setpoint voltage vector is calculated on the basis of the maximum power, the current vector and the output voltage vector. The setpoint voltage vector is generated with the setpoint amount, and then operating the permanent magnet synchronous motor at least with the setpoint voltage vector.

Abstract: A method for monitoring an electric motor of a hydraulic brake system for a motor vehicle, wherein a first torque and a second torque are calculated and compared with one another. A fault can be detected on the basis of the comparison. The invention also relates to an associated electronic control module, to an associated hydraulic brake system and to an associated non-volatile computer-readable storage medium.

Abstract: An electric hollow-shaft motor having a hollow shaft which is able to be driven in rotation, and a detection device which is configured to detect the rotational position of the hollow shaft, wherein the detection device includes a magnet which is arranged on the hollow shaft, and a fixed magnetic field sensor which is arranged within the hollow shaft, wherein the magnetic field sensor is configured to detect a magnetic field generated by the magnet.

Abstract: A method for operating a permanent magnet synchronous motor comprises setting a maximum power, determining a current vector and an output voltage vector in the dq coordinate system. A setpoint amount for a setpoint voltage vector is calculated on the basis of the maximum power, the current vector and the output voltage vector. The setpoint voltage vector is generated with the setpoint amount, and then operating the permanent magnet synchronous motor at least with the setpoint voltage vector.

Abstract: A method for operating a permanent magnet synchronous motor comprises setting a maximum power, determining a current vector and an output voltage vector in the dq coordinate system. A setpoint amount for a setpoint voltage vector is calculated on the basis of the maximum power, the current vector and the output voltage vector. The setpoint voltage vector is generated with the setpoint amount, and then operating the permanent magnet synchronous motor at least with the setpoint voltage vector.

Abstract: A method for operating a permanent magnet synchronous motor, an operational vector being determined in a multi-stage process. A motor assembly configured to perform such a method is also disclosed.

Abstract: A method for operating a permanent magnet synchronous motor comprises setting a maximum power, determining a current vector and an output voltage vector in the dq coordinate system. A setpoint amount for a setpoint voltage vector is calculated on the basis of the maximum power, the current vector and the output voltage vector. The setpoint voltage vector is generated with the setpoint amount, and then operating the permanent magnet synchronous motor at least with the setpoint voltage vector.

Abstract: A method for operating a permanent magnet synchronous motor, an operational vector being determined in a multi-stage process. A motor assembly configured to perform such a method is also disclosed.

Abstract: An electric hollow-shaft motor having a hollow shaft which is able to be driven in rotation, and a detection device which is configured to detect the rotational position of the hollow shaft, wherein the detection device includes a magnet which is arranged on the hollow shaft, and a fixed magnetic field sensor which is arranged within the hollow shaft, wherein the magnetic field sensor is configured to detect a magnetic field generated by the magnet.

Abstract: A brake system comprises a cylinder-piston unit movable by an electromechanical actuator. Wheel brakes associated with at least one axle can be supplied with braking pressure via the hydraulic pressure chamber. The electromechanical actuator comprises a rotation-translation transmission and an electronically commutated synchronous machine having a stator with at least two phase windings, a rotor comprising at least one permanent magnet and at least one rotor position sensor. A torque-forming current and/or a magnetic field attenuating current are adjusted in a co-ordinate system which is fixed relative to the rotor. Voltages in the co-ordinate system are detected to serve as control variables and are transformed into a voltage phasor, which indicates for each phase winding of the stator, a voltage to be applied, and a set value for the magnetic field attenuating current is limited to a maximum value being determined from a predetermined characteristic map.

Abstract: A method for monitoring an electric motor of a hydraulic brake system for a motor vehicle, wherein a first torque and a second torque are calculated and compared with one another. A fault can be detected on the basis of the comparison. The invention also relates to an associated electronic control module, to an associated hydraulic brake system and to an associated non-volatile computer-readable storage medium.

Abstract: A method for operating an electric machine, in which a control device assigned to the electric machine is used to switch currents of winding phases of the electric machine in a pulse-modulated manner, provides that a current value of the direct input current of the control device is determined using current values of the winding phases and duty factors of the pulse modulation.

Abstract: A linear actuator for generating a linear actuating force, including a first drive unit having a first drive shaft designed as a hollow shaft, a first rotation-translation transmission driven by the first drive unit, having a first threaded spindle and a first threaded nut engaging with the threaded spindle, wherein the drive shaft of the first drive unit is designed as a first threaded spindle, a second drive unit arranged axially to the first drive unit and having a drive shaft, and a second rotation-translation transmission driven by the second drive unit, having a second threaded spindle and a threaded nut engaging with the second threaded spindle, wherein the drive shaft of the second drive unit is connected to the second threaded spindle; via the hollow shaft in a rotationally fixed manner.