Robert Boschgmbh

Manfred Kirschner

Edwin Eberlein

Axel Aue

Uwe Guenther

Beate Leibbrand

Klaus Joos

Markus Amler

Jens Wolber

Thomas Frenz

Daniel Raichle

Johannes Meiwes

Alex Grossmann

Christian Zimmermann

Torsten Baumann

Immanuel Krauter

Hans Partes

Reiner Schweinfurth

Karsten Kroepke

Bernd Tepass

Ingo Richter

Mathias Rollwage

Jens Graf

Michael Werner

Dieter Buchholz

Eberhard Klein

Klaus-Dieter Hufnagel

Thomas Knorpp

Thomas Proepper

Heinrich Barth

Volker Gilgenbach

Armin Lachenmaier

Thomas Merkel

Stephan Dieke

The present invention relates to establishing a rotational speed-dependent safe operating mode. For this purpose, two redundant control paths are provided and are each designed to establish either an active short-circuit or a freewheeling mode as the safe operating mode. In this way, even if one control path fails, a rotational speed-dependent safe operating mode can still be fully established.

Control device for an inverter, electric drive system and method for establishing a safe operating mode

The invention relates to an apparatus () for operating a resolver (), which has at least one receiver winding () or at least one excitation winding (), which are/can be associated with a rotatably mounted shaft (), in particular a rotor shaft of an electric motor, said apparatus also having a device () which determines an angular position of the shaft () as a function of an induced voltage detected by the excitation winding () by means of a desired excitation signal (SES) with a predeterminable frequency and amplitude and by the receiver winding (). According to the invention, means () for limiting an electrical voltage on the excitation winding () are associated with the excitation winding (), wherein the means () limit the voltage only above a maximum normal voltage in only one current direction.

Method and apparatus for operating a resolver, and resolver device

An apparatus for operating a resolver which includes at least one first receiver winding and an exciter winding, which are/can be associated with a rotor, and an evaluation device which determines an angular position of the rotor as a function of an induced voltage that is generated by the exciter winding and detected by the receiver winding. According to the invention, the first receiver winding is connected at a first end to an actuable switch by means of a first RC circuit, said switch connecting the RC circuit as required to a positive voltage source, and the first receiver winding is connected at a second end to a second actuable switch by means of a second RC circuit, said second switch connecting the second RC circuit as required to a negative voltage source, and to a control unit which simultaneously actuates the switches as required.

Operating a resolver and detecting a defect in the resolver

A method for supplying operating voltage to a control unit of a motor vehicle, the control unit being continuously supplied by a vehicle battery, and a device for implementing the method. In the case of a method for supplying a control unit of a motor vehicle with operating voltage, where the power supply to the control unit is reliably ensured in the off and non-running state, respectively, during vehicle start-up, while entailing minimal outlay for circuitry, a potential of the vehicle battery is connected to the control unit at all times via at least one of the lines that are connected to the control unit.

Method and device for supplying operating voltage to a control unit of a motor vehicle

A control chip for providing the basic functionality of a control unit includes a voltage supply having at least two, in particular three, output voltages; at least two, in particular three, sensor power supplies, in particular having 5-V and/or 3.3-V output voltage; at least one driver for bidirectional interfaces; a CAN driver; a follower control; a main relay output stage having a diagnostic function; at least one bidirectional serial interface for controlling the output stages and for communicating with a microcontroller; at least six power output stages, in particular having rated currents of 0.6 A to 3 A; at least one low-level signal output, in particular having a rated current of 50 mA, and four ignition drivers.

Control chip for providing the basic functionality of a control unit

A method for serially transmitting data between a first and a second station is provided, the first station unidirectionally transmitting at least two signals to the second station on two signal paths. In this method, a shift register is provided in each station, the two signal paths of the first station being routed in parallel into a shift register, and the data transmission to the second station being carried out by automatically clocking the shift register from a time base.

Method and device for data transmission

An electronic circuit for detecting measured quantities has a sensor unit for generating an analog measurement signal and a signal detecting unit () with a first analog/digital converter for digitizing the analog measurement signal. Differences in the fluctuations of the supply voltages that are supplied to the sensor unit and the signal detecting unit essentially result in the generation of undesirable fluctuations in the measurement signal. To minimize these effects or compensate for them, the digitized measurement signal is corrected In response to a voltage signal (U) that represents the imprecision xof the first supply voltage (VS).

Electronic circuit for measured parameter recording

A device to convert a diagnostic interface to standard SPI, which includes an electronic unit having a data input, a data output, a synchronization input, a clock input, and a register, and a buffer unit having a signal input, a signal output and an activation input. The data input and the data output of the electronic unit are connected to each other by a first data line. The data output for the electronic unit is connected to the signal input on the buffer unit by a second data line.

Device and method for converting a diagnostic interface to SPI standard

A set of peripheral chips for realizing hardware functions of a control device has at least two electronic units, which allow partitioning for the purpose of providing at least one basic functionality for a control device. This first and/or second electronic unit(s) may typically be configured as application-specific electronic switching circuit (ASIC).

Set of peripheral chips

A method and a device having a processor module for controlling operating sequences, in particular in an engine control unit in a motor vehicle, peripheral elements being selected by a processor module having a predetermined number of select interfaces by select signal output over these select interfaces, and instructions being transmitted to the peripheral elements over at least one information interface of the processor module. Selection identifiers are assigned to the instructions and transmitted together with them. Thus, a selection of peripheral elements is made by a select signal and a selection identifier.

Method and device for controlling operating sequences

A method and a device are described for diagnosing a fuel system having a plurality of electric fuel delivery units, which are submerged on the inlet side in a fuel supply contained in a fuel tank, and which, on the outlet side, deliver fuel in a fuel line to an internal combustion engine. The currents of the electric fuel delivery units are measured directly or indirectly in an analysis unit, compared to one another, and a diagnostic signal in digitized form is generated as a function of the result of the comparison.

Method and device for diagnosing the failure of a fuel delivery device in a fuel system

The method and circuit arrangement and/or component prevents a change of a preset or set state of a control member and/or control unit ( ) during a reset of controller or regulator ( ) that controls this control member and/or control unit. The circuit arrangement and/or component ( ) has at least one input and at least one output (TA) and is connected between at least one terminal (P) of a controller or regulator ( ) and at least one input of the control member and/or control unit ( ). The at least one output (TA) of the circuit arrangement and/or component is connected for feedback to the at least one terminal (P) of the controller or regulator ( ) and/or the at least one input of the circuit arrangement and/or the component ( ), e.g. by means of feedback element ( ), which may be a feedback resistor.

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Stuttgart, Germany

Manfred Kirschner