Robert Boschgmbh

Roland Schleser

Andreas Heyl

Holger Niemann

Daniel Kanth

Bernd Doerr

Stephan Hanel

Mikkel Liisberg

Daniel Damm

Daniel Raichle

Gunther Goetting

Oliver Kaefer

Carsten Gebauer

Dragan Mikulec

Torsten Heidrich

Markus Kretschmer

Dirk Gollub

The present invention relates to the analysis of current sensor signals of a multi-phase electrical system. According to the invention, signal paths between a current sensor element and a measuring device are coupled to a predetermined electric potential for a short time. A change in the subsequent measurement results can then be analyzed to see if they are indicative of a possible malfunction during the measurement.

Device and method for diagnosing the detection of a multi-phase electric current

A method for generating an output data stream from an input data stream, a processing unit receives a first input data stream including a first data set, and this processing unit receives, from a further processing unit, a second set of metadata, which describes a second data set of a second input data stream of this further processing unit, the processing unit outputs or does not output, as a function of the second set of metadata, an output data set of the output data stream generated from the first data set.

Method and device for generating an output data stream

A method for redundant processing of data by at least two processing units is described. After a restart or reset, the first processing unit of the at least two processing units receives first portions of the data for processing from at least one second processing unit of the at least two processing units.

Method for redundant processing of data

A method for operating an electrical machine, in particular for making available drive power for a drive train of a motor vehicle, the electrical machine being controlled by several phase currents, the method including sensing an electrical variable that represents the torque delivered by the electrical machine; and monitoring the torque. A degradation of the electrical machine is taken into consideration in the monitoring of the torque.

Method and device for operating an electric machine of a motor vehicle drive train

A method for initiating an operation under emergency conditions of a motor vehicle, the method including detecting a malfunction of a component of the motor vehicle; checking whether an operation under emergency conditions is possible; reporting the malfunction to the driver; initiating the operation under emergency conditions under predefined conditions, the operation under emergency conditions being initiated following an active confirmation by the driver.

Method and device for initiating an operation of a motor vehicle under emergency conditions

A method for checking the plausibility of a torque of an electric machine, calculated on the basis of a machine model, in which a first value of an electromagnetic power of the electric machine is determined from the calculated torque and a rotational speed of the electric machine. Stator current components and stator phase voltage components are calculated from the stator currents and the stator phase voltages with respect to a reference system, which is fixed in relation to the stator. A second value of the electromagnetic power of the electric machine is determined from the stator current components and the stator phase voltage components. If a deviation of the first value of the electromagnetic power of the electric machine from the second value exceeds a predefined power threshold value, the torque of the electric machine, calculated on the basis of the machine model, is classified as implausible.

Method for checking the plausibility of the torque of an electric machine and machine controller for controlling an electric machine and for carrying out the method

In a method for operating an at least three-phase electric machine used as a drive assembly in a motor vehicle, which is actuated via an inverter, the inverter including switching elements in the form of half bridges which are in each case electrically connected to a respective phase of the electric machine, when a first switching element of a first half bridge connected to a first phase is permanently closed/opened on account of failure, a second switching element of the first half bridge is permanently opened/closed and, in a first angular range of an electrical rotation, which is uninfluenced by the first phase, all switching elements of the additional half bridges are actuated in the usual manner.

Method for operating an at least three-phase electric machine, used as a drive assembly in a motor vehicle, and control unit for an inverter

A method for operating an electric vehicle, the electric vehicle having an electric motor and a brake device, and the electric motor and the brake device being capable of being influenced by a control device. When the electric vehicle is at a standstill, when there is an error of the control device, the brake device is actuated so that the electric vehicle cannot move, or at least can move only to a very limited extent.

Method for operating an electric vehicle

In a method for determining the torque of an internal combustion engine of a motor-vehicle hybrid drive device which further includes a secondary electric motor coupled to the internal combustion engine, the torque of the internal combustion engine is determined at at least one operating point by comparison to the known torque of the secondary motor.

Growing community of inventors

Saarbruecken, Germany

Roland Schleser