Robert Boschgmbh

Simon Dierolf

Udo Sieber

Alex Grossmann

Reiner Schweinfurth

Tobias Mauk

Dieter Schwarzmann

Andreas Ortseifen

Michael Kilger

Stefan Friedrich

Ingo Immdendoerfer

Min Xu

The disclosure relates to an apparatus and a method for adapting control of a brushless electric motor in order to influence a position of an actuator, wherein at least two values of an output variable of a sensor are recorded in order to determine a position of the actuator, an item of information relating to the position of the actuator is determined on the basis of the at least two recorded values, the determined information relating to the position of the actuator is assigned to an item of information relating to a rotor position of the electric motor, wherein the at least two recorded values are recorded at two different times in a predefined interval of time, and wherein a duration of the predefined interval of time is determined on the basis of a characteristic of the electric motor.

Method and apparatus for calibrating an actuator system

A method for operating a circuit system having at least three control stages for at least three phases, each of the control stages having a high-side switch and a low-side switch, each of the high-side switches and each of the low-side switches being capable of being brought into an electrically conductive state and into an electrically non-conductive state, a quantity being determined that influences the temperature of the high-side switches and/or of the low-side switches, either the high-side switches or the low-side switches being selected in a group as a function of the quantity influencing the temperature, and the selected high-side switches or low-side switches being controlled in a freewheeling phase in such a way that the selected high-side switches or low-side switches form a freewheel during the freewheeling phase.

Method for operating a circuit assembly

A method and device for operating an electrically commutated machine having a rotor on which a first gear of a transmission can be situated, wherein a comparison value is determined as a function of an instantaneous angular position of a second gear of the transmission that is capable of being connected to the first gear for the transmission of torque, and a target value for an manipulated variable of the electrically commutated machine is determined as a function of the result of a comparison of the comparison value with an instantaneous value of an operating variable of the electrically commutated machine.

Method and device for operating an electrically commutated machine

A method is proposed for adjusting an actuator () of a positioning system (). The positioning system () has an electronically commutated actuator drive () which is coupled to the actuator (), wherein the actuator drive () has a permanent magnetic rotor (), wherein the rotor () has a first shaft () which extends along a pole axis () of the rotor (). The actuator drive () additionally has an electronically commutated stator (), wherein the stator () can be energized using a space phasor (), wherein the space phasor () has an electric phase and an amplitude, wherein the space phasor () is aligned with respect to the first shaft () of the rotor () around a difference phasing. In order to be able to actuate a predefined position of the actuator, even without sensors to determine the position of the first shaft () of the rotor (), the following steps of the method are thereby provided: setting the difference phasing of the space phasor () to an operating difference phasing; setting the amplitude to an operating amplitude, wherein the operating difference phasing and the operating amplitude are set in such a way that the operating difference phasing is less than 45&#xb0; and that a torque is generated at the rotor () suitable for starting up the predefined position of the actuator (). The invention further relates to a device for adjusting an actuator () of a positioning system () and a computer program product which contains a program code which, when it is executed by a data processing unit, implements the method according to the invention.

Method and device for adjusting an actuator member of a positioning system with an electronically commutated actuator drive

A method for calibrating a drive of a throttle valve of an internal combustion engine of a motor vehicle includes detecting whether the internal combustion engine is currently running or is not running. The method further includes activating the drive to displace the throttle valve into a target position if it is detected that the internal combustion engine is currently not running. The method further includes calibrating a characteristic at the target position. A correlation between a rotor position of the drive and an output voltage of a throttle valve angle transducer follows a characteristic.

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Kirchheim/Teck, Germany

Simon Dierolf